commit 9dc191be4fff4b55ea25894c942ec9299c932f4b
Author: karim <karim@gabrielevarano.ch>
Date:   Sat May 16 04:27:41 2026 +0200

    Initial commit — Dossier Rhino 8 Plugin
    
    OpenStudio-Suite Architektur-Plugin fuer Rhino 8 (Mac):
    - Smart-Elemente: Wand, Decke, Dach (Pult/Sattel/Walm/Mansarde),
      Oeffnungen (Fenster/Tueren mit Rahmen + Sims + Glas + Fluegel),
      Treppen (gerade · L · Wendel mit Schrittmass-Validierung)
    - Live-Previews mit Step-Lines + Soll-Range-Clamping
    - Bidirektionale Selection-Sync zwischen Source-Linie und Volume
    - Geschoss-/Ebenen-Verwaltung mit OKFF-Persistenz
    - Layouts mit PDF-Export
    - Ausschnitte / Massstab / Override-Regeln
    - Petrol-Gruen Theme (Rapport-konform)
    
    Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

diff --git a/.gitignore b/.gitignore
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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# Node / Vite
+node_modules
+dist
+dist-ssr
+*.local
+
+# Tauri (launcher/)
+launcher/src-tauri/target/
+launcher/node_modules/
+launcher/dist/
+launcher/.tauri/
+*.key
+*.key.pub
+
+# Python / Rhino
+__pycache__/
+*.pyc
+*.pyo
+
+# Claude Code
+.claude/
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
+
+# OS
+Thumbs.db
+ehthumbs.db
+Desktop.ini
diff --git a/CLAUDE.md b/CLAUDE.md
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+# RhinoPanel — Projektdokumentation für Claude
+
+## Was ist das?
+
+Ein React-Plugin für Rhino 8 (Mac) das als schwebendes Fenster läuft und Architektur-Workflows aus Vectorworks/ArchiCAD nachbildet. Die React-UI wird in Rhinos Eto.Forms WebView über `LoadHtml` (inline) eingebettet.
+
+## Kommunikation React ↔ Python
+
+**React → Python:** `document.title = "RHINOMSG::{json}"` (queue-basiert, 80ms delay)
+**Python → React:** `webview.ExecuteScript("window.onRhinoMessage({...})")` 
+
+Nachrichten-Typen:
+- `APPLY` — Ebenen auf Rhino anwenden, GH triggern
+- `LAYER_VISIBILITY` — Layer sofort ein/ausblenden
+- `LAYER_LOCK` — Layer sperren/entsperren
+- `SET_ACTIVE` — Aktiven Rhino-Layer setzen
+- `STATE_SYNC` — Python → React, beim Panel-Start
+
+## Datenmodell
+
+```json
+[
+  {"id": "eg",  "name": "EG",  "type": "grundriss", "hoehe": 3.50, "schnitthoehe": 1.00, "okff": 0.00},
+  {"id": "1og", "name": "1OG", "type": "grundriss", "hoehe": 3.00, "schnitthoehe": 1.00, "okff": 3.50},
+  {"id": "saa", "name": "Schnitt A-A", "type": "schnitt"},
+  {"id": "nor", "name": "Nordansicht", "type": "ansicht"}
+]
+```
+
+Gespeichert in `doc.Strings["rhinopanel_ebenen"]` (JSON). OKFF wird nur für `type: "grundriss"` berechnet (kumulativ). Schnitt/Ansicht haben keine Höhenparameter.
+
+## Rhino Layer-Hierarchie
+
+```
+10_GRUNDRISSE
+  └── EG
+      ├── 01_WAND          (schwarz,  lw 0.50)
+      ├── 02_TUER_FENSTER  (blau,     lw 0.25)
+      ├── 03_MOEBEL        (grau,     lw 0.13)
+      ├── 04_TEXT          (hellgrau, lw 0.13)
+      ├── 05_TREPPEN       (gold,     lw 0.35)
+      └── 06_3D_VOLUMEN    (lila,     lw 0.25)
+  └── 1OG (gleiche Sublayer)
+20_SCHNITTE
+  └── Schnitt A-A
+      ├── 21_PROFIL  (rot,       lw 0.70)
+      ├── 22_WAND    (orange,    lw 0.25)
+      └── 23_TEXT    (hellgrau,  lw 0.13)
+30_ANSICHTEN
+  └── Nordansicht
+      ├── 31_FASSADE (türkis, lw 0.35)
+      └── 32_TEXT    (hellgrau, lw 0.13)
+00_RASTER, 01_VERMESSUNG, 40_SITUATION, 90_REFERENZEN, 99_KONSTRUKTION
+```
+
+## Dateistruktur
+
+```
+rhino-panel/
+├── src/
+│   ├── App.jsx                      # Hauptkomponente, State-Management
+│   ├── main.jsx                     # Entry point, window.onerror handler
+│   ├── index.css                    # Dark theme, CSS-Variablen (Swiss minimal)
+│   ├── lib/
+│   │   └── rhinoBridge.js           # Kommunikation React↔Python
+│   └── components/
+│       ├── EbenenManager.jsx        # Zeichnungsebenen-Liste (GR/SC/AN Badges)
+│       ├── EbenenDialog.jsx         # Dialog zum Bearbeiten der Ebenen
+│       ├── LayerPanel.jsx           # Layer-Sichtbarkeit/Sperre togglen
+│       ├── BottomBar.jsx            # "Auf Rhino anwenden" Button
+│       └── Section.jsx              # Ausklappbarer Abschnitt
+├── rhino/
+│   ├── rhinopanel.py                # Panel starten, Bridge, LoadHtml-Inline
+│   ├── layer_builder.py             # Rhino-Layer erstellen/aktualisieren
+│   └── INSTALL.md                   # Setup-Anleitung inkl. GH
+├── dist/                            # Gebaute App (npm run build)
+└── vite.config.js                   # base: './' wichtig für file:// URLs
+```
+
+**Alte Dateien (nicht mehr aktiv, können gelöscht werden):**
+- `src/components/GeschossManager.jsx` — ersetzt durch EbenenManager
+- `src/components/GeschossDialog.jsx`  — ersetzt durch EbenenDialog
+
+## Kritische technische Details
+
+### Warum LoadHtml statt file:// URL
+Rhinos WKWebView blockiert `<script type="module">` bei `file://` URLs (CORS/module restrictions). Lösung: Python liest `dist/index.html`, inliniert CSS und JS, lädt via `webview.LoadHtml(html)`. JS wird in `DOMContentLoaded` eingewickelt damit `#root` existiert wenn React rendert.
+
+### Warum Idle-Event für URL-Loading
+`LoadHtml` in `__init__` läuft bevor der WebView in einem Fenster ist → React kann nicht in DOM rendern. Fix: `Rhino.RhinoApp.Idle` Event wartet bis Fenster sichtbar ist.
+
+### Warum kein Docking
+`RegisterPanel` schlägt fehl: `"constructor must accept uint, RhinoDoc or no params"`. IronPython `*args` befriedigt Rhinos .NET-Reflection nicht. Panel läuft daher als schwebendes `forms.Form`.
+
+### IronPython 2 Limitierungen
+- `# -*- coding: utf-8 -*-` Header in allen .py Dateien
+- Keine Umlaute in Strings (ue/oe/ae statt ü/ö/ä)
+- `e.Title` statt `webview.Title` im DocumentTitleChanged Handler
+
+## Grasshopper-Anbindung
+
+Wenn "Anwenden" gedrückt wird:
+1. `layer_builder.build_layers()` erstellt/aktualisiert Rhino-Layer
+2. JSON wird in `doc.Strings["rhinopanel_ebenen"]` gespeichert
+3. `canvas.Document.NewSolution(True)` triggert GH-Neuberechnung
+
+**GH Python-Komponente (eine Komponente, Output `a`):**
+```python
+import json, Rhino, Rhino.Geometry as rg
+doc = Rhino.RhinoDoc.ActiveDoc
+raw = doc.Strings.GetValue("rhinopanel_ebenen")
+ebenen = json.loads(raw) if raw else []
+a = []
+for e in ebenen:
+    if e.get("type") != "grundriss": continue
+    idx = doc.Layers.FindByFullPath("10_GRUNDRISSE::{}::01_WAND".format(e["name"]), -1)
+    if idx < 0: continue
+    for obj in doc.Objects.FindByLayer(doc.Layers[idx]):
+        crv = obj.Geometry
+        if not isinstance(crv, rg.Curve): continue
+        c = crv.DuplicateCurve()
+        c.Transform(rg.Transform.Translation(0, 0, e.get("okff", 0)))
+        ext = rg.Extrusion.Create(c, e["hoehe"], c.IsClosed)
+        if ext: a.append(ext.ToBrep())
+```
+Für Live-Updates: GH `Timer` Komponente (1000ms) mit Python-Komponente verbinden.
+
+## Design-System
+
+Dark theme, Swiss minimal, inspiriert von rapport.kgva.ch.
+CSS-Variablen in `index.css`. Wichtigste:
+- `--bg-base: #1c1c1e` — Hintergrund
+- `--accent: #5a9e5a` — Grün (Anwenden-Button)
+- `--active: #3a5f8a` — Blau (aktive Ebene)
+- `--font: 'Inter'` — via Google Fonts
+
+Typ-Badges: GR=blau `#3a6fa8`, SC=orange `#c87050`, AN=türkis `#50c8a0`
+
+## Workflow Panel starten
+
+```bash
+npm run build   # nach Code-Änderungen
+```
+
+In Rhino (bei Änderungen am Python-Code):
+```python
+import scriptcontext as sc
+sc.sticky["rhinopanel_registered"] = False
+sc.sticky["rhinopanel_form"] = None
+```
+→ `_RunPythonScript` → `rhinopanel.py`
+
+## Nächste mögliche Schritte
+
+- **Docking**: Rhino 8 RhinoCode (Python 3) statt IronPython verwenden — hat andere Panel-Registration API
+- **Live-Vorschau**: Rhino `ObjectAdded`/`ObjectModified` Events in rhinopanel.py für automatischen GH-Trigger ohne Anwenden-Button
+- **Schnittlinien**: Für SC-Ebenen Schnittlinie/Position als Parameter hinzufügen
+- **Layerpanel dynamisch**: LayerPanel.jsx zeigt aktuell statische Layer-Gruppen — soll dynamisch aus `ebenen`-State kommen
+- **2D-Fills**: Schraffuren/Füllungen für Wände (Vectorworks-ähnlich)
+- **Viewport-Zuweisung**: Grundrisse/Schnitte/Ansichten einem Rhino-Detailbild zuweisen
diff --git a/README.md b/README.md
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+# Dossier
+
+Rhino-8 Plugin für architektonisches Entwerfen mit smarten Bauteilen — Geschosse, Wände, Decken, Dächer, Öffnungen (Fenster/Türen), Treppen (gerade · L · Wendel). Teil der **OpenStudio-Suite** (mit Rapport als Schwestertool).
+
+Die React-UI wird in Rhinos Eto.Forms-WebView über `LoadHtml` (inline) eingebettet — die Plugin-Logik läuft in IronPython3 in Rhino 8 (Mac).
+
+## Voraussetzungen
+
+| Tool | Version |
+|---|---|
+| Rhino | 8 (Mac · Windows untestet) |
+| Node.js | ≥ 20 (für Vite 8) |
+| npm | ≥ 10 |
+| Python | IronPython 3 (in Rhino integriert) |
+
+Optional — für den Standalone-Launcher:
+
+| Tool | Version |
+|---|---|
+| Rust toolchain | ≥ 1.77 (`rustup`) |
+| Plattform-Build-Tools | siehe [Tauri Prerequisites](https://v2.tauri.app/start/prerequisites/) |
+
+## Setup
+
+```bash
+git clone http://192.168.1.247:3000/karim/DOSSIER.git
+cd DOSSIER
+npm install
+```
+
+## Entwicklung
+
+**React-UI bauen** (nach jeder UI-Änderung):
+
+```bash
+npm run build       # → dist/index.html (inline-fähig)
+```
+
+**Im Browser entwickeln** (HMR, ohne Rhino — für reine UI-Arbeit):
+
+```bash
+npm run dev         # http://localhost:5173
+```
+
+**Plugin in Rhino starten:**
+
+In Rhino 8 das Hauptpanel über `_RunPythonScript` öffnen:
+
+```python
+# Hauptmenu
+_RunPythonScript "/Users/karim/STUDIO/rhino-panel/rhino/rhinopanel.py"
+```
+
+Bei Änderungen am Python-Code Panels neu laden:
+
+```python
+import importlib, sys, scriptcontext as sc
+# Bridges zuruecksetzen
+for k in list(sc.sticky.keys()):
+    if any(p in k.lower() for p in ['elemente','gestaltung','oberleiste','massstab','ausschnitte','layouts','overrides','werkzeuge','dimensionen']):
+        sc.sticky[k] = None
+# Module neu laden
+for m in list(sys.modules):
+    if any(p in m for p in ['elemente','gestaltung','oberleiste','massstab','ausschnitte','layouts','overrides','werkzeuge','dimensionen','panel_base']):
+        importlib.reload(sys.modules[m])
+```
+
+## Architektur
+
+### Kommunikation React ↔ Python
+
+- **React → Python**: `document.title = "RHINOMSG::{json}"` (queue-basiert, 80 ms delay)
+- **Python → React**: `webview.ExecuteScript("window.onRhinoMessage({...})")`
+
+### Datenmodell
+
+- **Geschosse** in `doc.Strings["dossier_ebenen"]` als JSON (Name, Höhe, OKFF, Typ).
+- **Smart-Elemente** (Wand, Decke, Dach, Öffnung, Treppe) als Rhino-Objekte mit UserStrings — `dossier_element_id`, `dossier_element_type`, etc.
+- **Source ↔ Volume Pattern**: jedes Element hat eine *Source-Geometrie* (Achse/Outline/Punkt) + ein generiertes *Volume* (Brep). Source-Änderungen triggern automatische Regeneration.
+
+### Layer-Hierarchie
+
+```
+10_GRUNDRISSE
+  └── EG
+      ├── 20_WÄNDE
+      ├── 30_DECKEN
+      ├── 31_DÄCHER
+      └── 40_TREPPEN
+  └── 1OG (gleiche Sublayer)
+20_SCHNITTE
+30_ANSICHTEN
+00_RASTER · 01_VERMESSUNG · 40_SITUATION · 90_REFERENZEN · 99_KONSTRUKTION
+```
+
+## Projektstruktur
+
+```
+.
+├── src/                       Frontend (React)
+│   ├── App.jsx                Hauptpanel (Geschosse + Ebenen)
+│   ├── ElementeApp.jsx        Smart-Elemente Panel
+│   ├── AusschnitteApp.jsx     Ausschnitte (Detail-Views)
+│   ├── LayoutsApp.jsx         Layouts + PDF-Export
+│   ├── MassstabApp.jsx        Massstab/Display-Modes
+│   ├── DimensionenApp.jsx     Objekt-Info (Position/Abmessungen)
+│   ├── OverridePanel.jsx      Override-Regeln + Kombinationen
+│   ├── components/            EbenenManager, GeschossManager, ...
+│   └── lib/rhinoBridge.js     React↔Python Bridge
+├── rhino/                     Backend (IronPython 3)
+│   ├── rhinopanel.py          Haupt-Entry, Bridge-Pattern
+│   ├── panel_base.py          BaseBridge + Panel-Registration
+│   ├── elemente.py            Smart-Elemente (Wand/Decke/Dach/Oeffnung/Treppe)
+│   ├── ausschnitte.py         Ausschnitte (Detail-Views)
+│   ├── layouts.py             Layouts + PDF-Generierung
+│   ├── massstab.py            Massstab/Display-Modes
+│   ├── overrides_panel.py     Override-Regeln
+│   ├── dimensionen.py         Objekt-Info Panel
+│   ├── gestaltung.py          Gestaltung (Override-Editor)
+│   ├── werkzeuge.py           Werkzeug-Sammlung
+│   └── oberleiste.py          Top-Menue (verbindet alle Panels)
+├── launcher/                  Tauri-2 Standalone-Launcher (optional)
+├── dist/                      Gebaute React-App (npm run build)
+├── public/                    Statische Assets
+├── icons_export/              Material-Icons als SVG
+└── vite.config.js             `base: './'` (wichtig fuer file:// inline)
+```
+
+## Bekannte Limitierungen
+
+- IronPython3-spezifisch: keine Umlaute in Source-Strings (`ue/oe/ae` statt `ü/ö/ä`); UTF-8-Header-Kommentar in allen `.py`-Files.
+- **Kein Docking** der Panels (Rhinos `RegisterPanel` schlägt fehl: `"constructor must accept uint, RhinoDoc or no params"`). Panels laufen daher als schwebende `forms.Form`-Fenster.
+- **`LoadHtml`-inline** statt `file://`-URL — Rhinos WKWebView blockiert sonst `<script type="module">` durch CORS-Restrictions.
+
+## Lizenz
+
+[GNU AGPL-3.0-or-later](https://www.gnu.org/licenses/agpl-3.0.html)
diff --git a/eslint.config.js b/eslint.config.js
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+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{js,jsx}'],
+    extends: [
+      js.configs.recommended,
+      reactHooks.configs.flat.recommended,
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      globals: globals.browser,
+      parserOptions: { ecmaFeatures: { jsx: true } },
+    },
+  },
+])
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diff --git a/icons_export/pause_icons/png/scatter_plot.png b/icons_export/pause_icons/png/scatter_plot.png
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diff --git a/icons_export/pause_icons/png/straighten.png b/icons_export/pause_icons/png/straighten.png
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diff --git a/icons_export/pause_icons/png/swipe_right_alt.png b/icons_export/pause_icons/png/swipe_right_alt.png
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new file mode 100644
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diff --git a/icons_export/pause_icons/svg/add_link.svg b/icons_export/pause_icons/svg/add_link.svg
new file mode 100644
index 0000000..365feea
--- /dev/null
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diff --git a/icons_export/pause_icons/svg/apps.svg b/icons_export/pause_icons/svg/apps.svg
new file mode 100644
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--- /dev/null
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diff --git a/icons_export/pause_icons/svg/aspect_ratio.svg b/icons_export/pause_icons/svg/aspect_ratio.svg
new file mode 100644
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--- /dev/null
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diff --git a/icons_export/pause_icons/svg/compare_arrows.svg b/icons_export/pause_icons/svg/compare_arrows.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/content_copy.svg b/icons_export/pause_icons/svg/content_copy.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/content_cut.svg b/icons_export/pause_icons/svg/content_cut.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/cut.svg b/icons_export/pause_icons/svg/cut.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/deselect.svg b/icons_export/pause_icons/svg/deselect.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/filter_alt.svg b/icons_export/pause_icons/svg/filter_alt.svg
new file mode 100644
index 0000000..e4af9ef
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diff --git a/icons_export/pause_icons/svg/flip.svg b/icons_export/pause_icons/svg/flip.svg
new file mode 100644
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--- /dev/null
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diff --git a/icons_export/pause_icons/svg/gesture.svg b/icons_export/pause_icons/svg/gesture.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/gradient.svg b/icons_export/pause_icons/svg/gradient.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/grid_view.svg b/icons_export/pause_icons/svg/grid_view.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/horizontal_rule.svg b/icons_export/pause_icons/svg/horizontal_rule.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/join_inner.svg b/icons_export/pause_icons/svg/join_inner.svg
new file mode 100644
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diff --git a/icons_export/pause_icons/svg/link.svg b/icons_export/pause_icons/svg/link.svg
new file mode 100644
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--- /dev/null
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diff --git a/icons_export/pause_icons/svg/loop.svg b/icons_export/pause_icons/svg/loop.svg
new file mode 100644
index 0000000..60646d6
--- /dev/null
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diff --git a/icons_export/pause_icons/svg/network_intelligence.svg b/icons_export/pause_icons/svg/network_intelligence.svg
new file mode 100644
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--- /dev/null
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diff --git a/icons_export/pause_icons/svg/open_with.svg b/icons_export/pause_icons/svg/open_with.svg
new file mode 100644
index 0000000..58b6084
--- /dev/null
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diff --git a/icons_export/pause_icons/svg/padding.svg b/icons_export/pause_icons/svg/padding.svg
new file mode 100644
index 0000000..4bd2803
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+++ b/icons_export/pause_icons/svg/padding.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M348.5-611.5Q360-623 360-640t-11.5-28.5Q337-680 320-680t-28.5 11.5Q280-657 280-640t11.5 28.5Q303-600 320-600t28.5-11.5Zm160 0Q520-623 520-640t-11.5-28.5Q497-680 480-680t-28.5 11.5Q440-657 440-640t11.5 28.5Q463-600 480-600t28.5-11.5Zm160 0Q680-623 680-640t-11.5-28.5Q657-680 640-680t-28.5 11.5Q600-657 600-640t11.5 28.5Q623-600 640-600t28.5-11.5ZM200-120q-33 0-56.5-23.5T120-200v-560q0-33 23.5-56.5T200-840h560q33 0 56.5 23.5T840-760v560q0 33-23.5 56.5T760-120H200Zm0-80h560v-560H200v560Zm0-560v560-560Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/polyline.svg b/icons_export/pause_icons/svg/polyline.svg
new file mode 100644
index 0000000..c0d52a2
--- /dev/null
+++ b/icons_export/pause_icons/svg/polyline.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M600-80v-100L320-320H120v-240h172l108-124v-196h240v240H468L360-516v126l240 120v-50h240v240H600ZM480-720h80v-80h-80v80ZM200-400h80v-80h-80v80Zm480 240h80v-80h-80v80ZM520-760ZM240-440Zm480 240Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/radio_button_unchecked.svg b/icons_export/pause_icons/svg/radio_button_unchecked.svg
new file mode 100644
index 0000000..a6bad3b
--- /dev/null
+++ b/icons_export/pause_icons/svg/radio_button_unchecked.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M480-80q-83 0-156-31.5T197-197q-54-54-85.5-127T80-480q0-83 31.5-156T197-763q54-54 127-85.5T480-880q83 0 156 31.5T763-763q54 54 85.5 127T880-480q0 83-31.5 156T763-197q-54 54-127 85.5T480-80Zm0-80q134 0 227-93t93-227q0-134-93-227t-227-93q-134 0-227 93t-93 227q0 134 93 227t227 93Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/rectangle.svg b/icons_export/pause_icons/svg/rectangle.svg
new file mode 100644
index 0000000..ada92f2
--- /dev/null
+++ b/icons_export/pause_icons/svg/rectangle.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M80-160v-640h800v640H80Zm80-80h640v-480H160v480Zm0 0v-480 480Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/remove.svg b/icons_export/pause_icons/svg/remove.svg
new file mode 100644
index 0000000..1019533
--- /dev/null
+++ b/icons_export/pause_icons/svg/remove.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M200-440v-80h560v80H200Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/roofing.svg b/icons_export/pause_icons/svg/roofing.svg
new file mode 100644
index 0000000..723352a
--- /dev/null
+++ b/icons_export/pause_icons/svg/roofing.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M360-160v-240h240v240H360Zm80-80h80v-80h-80v80ZM88-440l-48-64 440-336 160 122v-82h120v174l160 122-48 64-392-299L88-440Zm392 160Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/rotate_right.svg b/icons_export/pause_icons/svg/rotate_right.svg
new file mode 100644
index 0000000..3bdd4e1
--- /dev/null
+++ b/icons_export/pause_icons/svg/rotate_right.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M522-80v-82q34-5 66.5-18t61.5-34l56 58q-42 32-88 51.5T522-80Zm-80 0Q304-98 213-199.5T122-438q0-75 28.5-140.5t77-114q48.5-48.5 114-77T482-798h6l-62-62 56-58 160 160-160 160-56-56 64-64h-8q-117 0-198.5 81.5T202-438q0 104 68 182.5T442-162v82Zm322-134-58-56q21-29 34-61.5t18-66.5h82q-5 50-24.5 96T764-214Zm76-264h-82q-5-34-18-66.5T706-606l58-56q32 39 51 86t25 98Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/rounded_corner.svg b/icons_export/pause_icons/svg/rounded_corner.svg
new file mode 100644
index 0000000..d7a8d46
--- /dev/null
+++ b/icons_export/pause_icons/svg/rounded_corner.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M120-120v-80h80v80h-80Zm0-160v-80h80v80h-80Zm0-160v-80h80v80h-80Zm0-160v-80h80v80h-80Zm0-160v-80h80v80h-80Zm160 640v-80h80v80h-80Zm0-640v-80h80v80h-80Zm160 640v-80h80v80h-80Zm160 0v-80h80v80h-80Zm160 0v-80h80v80h-80Zm0-160v-80h80v80h-80Zm80-160h-80v-200q0-50-35-85t-85-35H440v-80h200q83 0 141.5 58.5T840-640v200Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/scatter_plot.svg b/icons_export/pause_icons/svg/scatter_plot.svg
new file mode 100644
index 0000000..0d04c29
--- /dev/null
+++ b/icons_export/pause_icons/svg/scatter_plot.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M567-167q-47-47-47-113t47-113q47-47 113-47t113 47q47 47 47 113t-47 113q-47 47-113 47t-113-47Zm169.5-56.5Q760-247 760-280t-23.5-56.5Q713-360 680-360t-56.5 23.5Q600-313 600-280t23.5 56.5Q647-200 680-200t56.5-23.5ZM167-287q-47-47-47-113t47-113q47-47 113-47t113 47q47 47 47 113t-47 113q-47 47-113 47t-113-47Zm169.5-56.5Q360-367 360-400t-23.5-56.5Q313-480 280-480t-56.5 23.5Q200-433 200-400t23.5 56.5Q247-320 280-320t56.5-23.5ZM327-607q-47-47-47-113t47-113q47-47 113-47t113 47q47 47 47 113t-47 113q-47 47-113 47t-113-47Zm169.5-56.5Q520-687 520-720t-23.5-56.5Q473-800 440-800t-56.5 23.5Q360-753 360-720t23.5 56.5Q407-640 440-640t56.5-23.5ZM680-280ZM280-400Zm160-320Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/select_all.svg b/icons_export/pause_icons/svg/select_all.svg
new file mode 100644
index 0000000..ac997c9
--- /dev/null
+++ b/icons_export/pause_icons/svg/select_all.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M280-280v-400h400v400H280Zm80-80h240v-240H360v240ZM200-200v80q-33 0-56.5-23.5T120-200h80Zm-80-80v-80h80v80h-80Zm0-160v-80h80v80h-80Zm0-160v-80h80v80h-80Zm80-160h-80q0-33 23.5-56.5T200-840v80Zm80 640v-80h80v80h-80Zm0-640v-80h80v80h-80Zm160 640v-80h80v80h-80Zm0-640v-80h80v80h-80Zm160 640v-80h80v80h-80Zm0-640v-80h80v80h-80Zm160 640v-80h80q0 33-23.5 56.5T760-120Zm0-160v-80h80v80h-80Zm0-160v-80h80v80h-80Zm0-160v-80h80v80h-80Zm0-160v-80q33 0 56.5 23.5T840-760h-80Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/square.svg b/icons_export/pause_icons/svg/square.svg
new file mode 100644
index 0000000..def3d37
--- /dev/null
+++ b/icons_export/pause_icons/svg/square.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M120-120v-720h720v720H120Zm80-80h560v-560H200v560Zm0 0v-560 560Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/straighten.svg b/icons_export/pause_icons/svg/straighten.svg
new file mode 100644
index 0000000..3630687
--- /dev/null
+++ b/icons_export/pause_icons/svg/straighten.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M160-240q-33 0-56.5-23.5T80-320v-320q0-33 23.5-56.5T160-720h640q33 0 56.5 23.5T880-640v320q0 33-23.5 56.5T800-240H160Zm0-80h640v-320H680v160h-80v-160h-80v160h-80v-160h-80v160h-80v-160H160v320Zm120-160h80-80Zm160 0h80-80Zm160 0h80-80Zm-120 0Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/swipe_right_alt.svg b/icons_export/pause_icons/svg/swipe_right_alt.svg
new file mode 100644
index 0000000..5157cc7
--- /dev/null
+++ b/icons_export/pause_icons/svg/swipe_right_alt.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M360-280q-83 0-141.5-58.5T160-480q0-83 58.5-141.5T360-680q73 0 127.5 45.5T556-520h171l-63-64 56-56 160 160-160 160-57-56 64-64H556q-14 69-68.5 114.5T360-280Zm85-115q35-35 35-85t-35-85q-35-35-85-35t-85 35q-35 35-35 85t35 85q35 35 85 35t85-35Zm-85-85Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/text_fields.svg b/icons_export/pause_icons/svg/text_fields.svg
new file mode 100644
index 0000000..551a7d3
--- /dev/null
+++ b/icons_export/pause_icons/svg/text_fields.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M280-160v-520H80v-120h520v120H400v520H280Zm360 0v-320H520v-120h360v120H760v320H640Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/unfold_more.svg b/icons_export/pause_icons/svg/unfold_more.svg
new file mode 100644
index 0000000..3e245d2
--- /dev/null
+++ b/icons_export/pause_icons/svg/unfold_more.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M480-120 300-300l58-58 122 122 122-122 58 58-180 180ZM358-598l-58-58 180-180 180 180-58 58-122-122-122 122Z"/></svg>
\ No newline at end of file
diff --git a/icons_export/pause_icons/svg/vertical_align_top.svg b/icons_export/pause_icons/svg/vertical_align_top.svg
new file mode 100644
index 0000000..605d025
--- /dev/null
+++ b/icons_export/pause_icons/svg/vertical_align_top.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 -960 960 960" width="24"><path d="M160-760v-80h640v80H160Zm280 640v-408L336-424l-56-56 200-200 200 200-56 56-104-104v408h-80Z"/></svg>
\ No newline at end of file
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..c82dbab
--- /dev/null
+++ b/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>EBENEN</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>
diff --git a/launcher/.gitignore b/launcher/.gitignore
new file mode 100644
index 0000000..3bdd52e
--- /dev/null
+++ b/launcher/.gitignore
@@ -0,0 +1,3 @@
+node_modules/
+dist/
+.DS_Store
diff --git a/launcher/README.md b/launcher/README.md
new file mode 100644
index 0000000..00eec3a
--- /dev/null
+++ b/launcher/README.md
@@ -0,0 +1,90 @@
+# Dossier Launcher
+
+Standalone macOS-App, die als Projekt-Hub für Dossier-Projekte in Rhino 8 dient.
+Wählt eine `.3dm` aus, konfiguriert pro Projekt welche Module aktiv sind, startet
+Rhino mit der Datei. Das Python-Plugin in `rhino/` liest beim Start die
+`dossier.project.json` (neben der `.3dm`) und lädt nur die aktivierten Module.
+
+## Setup (einmalig)
+
+### 1. Dependencies installieren
+
+```bash
+cd launcher
+npm install
+```
+
+Beim ersten `npm run tauri dev` zieht Cargo zusätzlich die Rust-Dependencies
+(dauert ein paar Minuten).
+
+### 2. Rhino Auto-Run einrichten
+
+Damit die Module bei jedem Rhino-Start automatisch laden:
+
+1. Rhino 8 starten
+2. `Rhinoceros 8` → `Preferences` → `General` → **Startup commands**
+3. Folgende Zeile eintragen:
+   ```
+   _-RunPythonScript "/Users/karim/STUDIO/rhino-panel/rhino/startup.py"
+   ```
+4. OK → Rhino neu starten
+
+Ab jetzt lädt `startup.py` bei jedem Rhino-Start:
+- mit `dossier.project.json` neben der `.3dm` → nur konfigurierte Module
+- ohne Config → alle Module (Backwards-Compat zum bisherigen Verhalten)
+
+## Entwicklung
+
+```bash
+npm run tauri dev
+```
+
+Startet Vite (Port 5174) und öffnet die Tauri-Window. Hot-Reload für React,
+Rust-Änderungen brauchen einen Rebuild.
+
+## Build (.app + .dmg)
+
+```bash
+npm run tauri build
+```
+
+Output: `src-tauri/target/release/bundle/macos/Dossier.app` und
+`src-tauri/target/release/bundle/dmg/Dossier_0.1.0_*.dmg`
+
+**Vor dem ersten Build**: Icons hinterlegen. Aktuell ist `bundle.icon` in
+`src-tauri/tauri.conf.json` leer. Mit
+```bash
+npm run tauri icon path/zur/icon.png
+```
+generiert Tauri das vollständige Icon-Set (1024×1024 PNG als Quelle reicht).
+
+## Architektur
+
+```
+launcher/
+├── modules.json              # Modul-Manifest (statisch, in Binary einkompiliert)
+├── src/                      # React-Frontend
+│   ├── App.jsx              # Project Hub + Modul-Dialog
+│   └── styles.css
+└── src-tauri/                # Rust-Backend
+    ├── src/lib.rs           # Tauri-Commands
+    └── tauri.conf.json
+```
+
+**Datenfluss:**
+1. Launcher liest `~/Library/Application Support/Dossier/recent.json`
+2. User klickt „Öffnen" → Launcher schreibt `dossier.project.json` neben die
+   `.3dm` und ruft `open -a "Rhinoceros 8" file.3dm`
+3. Rhino startet, `startup.py` läuft, liest die Config, lädt nur die aktivierten
+   Module
+4. Jedes Modul registriert sein eigenes Panel via `panel_base.register_and_open`
+
+## Module-Manifest erweitern
+
+Wenn ein neues Modul dazukommt, **drei Stellen** synchron halten:
+
+1. `launcher/modules.json` — Eintrag mit `id`, `name`, `description`, `pythonModule`, `dependsOn`
+2. `rhino/startup.py` — `_MODULE_TO_PY` Map ergänzen
+3. `rhino/<pythonModule>.py` — die Python-Implementierung
+
+Launcher rebuilden (`npm run tauri build`), neue `.app` ersetzt die alte.
diff --git a/launcher/index.html b/launcher/index.html
new file mode 100644
index 0000000..408dd28
--- /dev/null
+++ b/launcher/index.html
@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="de">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Dossier</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>
diff --git a/launcher/modules.json b/launcher/modules.json
new file mode 100644
index 0000000..5853f4b
--- /dev/null
+++ b/launcher/modules.json
@@ -0,0 +1,65 @@
+[
+  {
+    "id": "ebenen",
+    "name": "Ebenen-Manager",
+    "description": "Zeichnungsebenen (Geschosse, Schnitte, Ansichten) verwalten.",
+    "pythonModule": "rhinopanel",
+    "dependsOn": []
+  },
+  {
+    "id": "oberleiste",
+    "name": "Oberleiste",
+    "description": "Massstab, Display-Mode, Snaps, Overrides — die Top-Toolbar.",
+    "pythonModule": "oberleiste",
+    "dependsOn": []
+  },
+  {
+    "id": "ausschnitte",
+    "name": "Ausschnitte",
+    "description": "Viewport-Ausschnitte mit Kamera, Massstab und Layer-Sichtbarkeit speichern.",
+    "pythonModule": "ausschnitte",
+    "dependsOn": ["oberleiste"]
+  },
+  {
+    "id": "gestaltung",
+    "name": "Gestaltung",
+    "description": "Wand-Typen, Materialien, Texturen.",
+    "pythonModule": "gestaltung",
+    "dependsOn": ["ebenen"]
+  },
+  {
+    "id": "werkzeuge",
+    "name": "Werkzeuge",
+    "description": "Hilfs-Werkzeuge fuer wiederkehrende Aufgaben.",
+    "pythonModule": "werkzeuge",
+    "dependsOn": []
+  },
+  {
+    "id": "overrides",
+    "name": "Overrides",
+    "description": "Layer-Style Overrides (Linientypen, Farben, Druck-Gewichte).",
+    "pythonModule": "overrides_panel",
+    "dependsOn": ["oberleiste"]
+  },
+  {
+    "id": "dimensionen",
+    "name": "Dimensionen",
+    "description": "Object Info Palette: Position, Abmessungen, Drehung der Selektion bearbeiten (wie in Vectorworks).",
+    "pythonModule": "dimensionen",
+    "dependsOn": []
+  },
+  {
+    "id": "layouts",
+    "name": "Layouts",
+    "description": "Layouts erstellen und Details mit Ausschnitten bestuecken.",
+    "pythonModule": "layouts",
+    "dependsOn": ["ausschnitte"]
+  },
+  {
+    "id": "elemente",
+    "name": "Elemente",
+    "description": "Smart-Elemente: Waende als Achse (editierbar) + Volumen (auto-generiert), verknuepft mit Geschossen.",
+    "pythonModule": "elemente",
+    "dependsOn": ["ebenen"]
+  }
+]
diff --git a/launcher/package-lock.json b/launcher/package-lock.json
new file mode 100644
index 0000000..e723c72
--- /dev/null
+++ b/launcher/package-lock.json
@@ -0,0 +1,1706 @@
+{
+  "name": "dossier-launcher",
+  "version": "0.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "dossier-launcher",
+      "version": "0.1.0",
+      "dependencies": {
+        "@tauri-apps/api": "^2.0.0",
+        "@tauri-apps/plugin-dialog": "^2.0.0",
+        "react": "^19.2.6",
+        "react-dom": "^19.2.6"
+      },
+      "devDependencies": {
+        "@tauri-apps/cli": "^2.0.0",
+        "@vitejs/plugin-react": "^6.0.1",
+        "esbuild": "^0.28.0",
+        "vite": "^8.0.12"
+      }
+    },
+    "node_modules/@emnapi/core": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.10.0.tgz",
+      "integrity": "sha512-yq6OkJ4p82CAfPl0u9mQebQHKPJkY7WrIuk205cTYnYe+k2Z8YBh11FrbRG/H6ihirqcacOgl2BIO8oyMQLeXw==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@emnapi/wasi-threads": "1.2.1",
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@emnapi/runtime": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.10.0.tgz",
+      "integrity": "sha512-ewvYlk86xUoGI0zQRNq/mC+16R1QeDlKQy21Ki3oSYXNgLb45GV1P6A0M+/s6nyCuNDqe5VpaY84BzXGwVbwFA==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@emnapi/wasi-threads": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.1.tgz",
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+checksum = "0ec05a11813ea801ff6d75110ad09cd0824ddba17dfe17128ea0d5f68e6c5272"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11532158c46691caf0f2593ea8358fed6bbf68a0315e80aae9bd41fbade684a1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+ "synstructure",
+]
+
+[[package]]
+name = "zerotrie"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f9152d31db0792fa83f70fb2f83148effb5c1f5b8c7686c3459e361d9bc20bf"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90f911cbc359ab6af17377d242225f4d75119aec87ea711a880987b18cd7b239"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "625dc425cab0dca6dc3c3319506e6593dcb08a9f387ea3b284dbd52a92c40555"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/launcher/src-tauri/Cargo.toml b/launcher/src-tauri/Cargo.toml
new file mode 100644
index 0000000..b67a743
--- /dev/null
+++ b/launcher/src-tauri/Cargo.toml
@@ -0,0 +1,28 @@
+[package]
+name = "dossier-launcher"
+version = "0.1.0"
+description = "Dossier — Projekt-Launcher fuer Rhino"
+authors = ["Karim Gabriele Varano"]
+edition = "2021"
+
+[lib]
+name = "dossier_launcher_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2", features = [] }
+
+[dependencies]
+tauri = { version = "2", features = [] }
+tauri-plugin-dialog = "2"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+directories = "5"
+chrono = { version = "0.4", features = ["serde"] }
+
+[profile.release]
+panic = "abort"
+codegen-units = 1
+lto = true
+opt-level = "s"
+strip = true
diff --git a/launcher/src-tauri/build.rs b/launcher/src-tauri/build.rs
new file mode 100644
index 0000000..d860e1e
--- /dev/null
+++ b/launcher/src-tauri/build.rs
@@ -0,0 +1,3 @@
+fn main() {
+    tauri_build::build()
+}
diff --git a/launcher/src-tauri/capabilities/default.json b/launcher/src-tauri/capabilities/default.json
new file mode 100644
index 0000000..ccabc32
--- /dev/null
+++ b/launcher/src-tauri/capabilities/default.json
@@ -0,0 +1,10 @@
+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "default",
+  "description": "Capability fuer das Hauptfenster",
+  "windows": ["main"],
+  "permissions": [
+    "core:default",
+    "dialog:default"
+  ]
+}
diff --git a/launcher/src-tauri/icons/icon.png b/launcher/src-tauri/icons/icon.png
new file mode 100644
index 0000000..42ed240
Binary files /dev/null and b/launcher/src-tauri/icons/icon.png differ
diff --git a/launcher/src-tauri/src/lib.rs b/launcher/src-tauri/src/lib.rs
new file mode 100644
index 0000000..ee88bab
--- /dev/null
+++ b/launcher/src-tauri/src/lib.rs
@@ -0,0 +1,174 @@
+// Verhindert ein extra Konsolen-Fenster auf Windows im Release-Build.
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+use serde::{Deserialize, Serialize};
+use std::fs;
+use std::path::{Path, PathBuf};
+use std::process::Command;
+
+// Statisches Modul-Manifest — in die Binary einkompiliert, sodass die App
+// keine externe Datei zur Laufzeit braucht. Wer Module aendert: modules.json
+// im launcher-Root bearbeiten, dann neu bauen.
+const MODULES_JSON: &str = include_str!("../../modules.json");
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+struct Project {
+    name: String,
+    path: String,
+    modules: Vec<String>,
+    #[serde(rename = "lastOpened")]
+    last_opened: Option<String>,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+struct ProjectConfig {
+    name: String,
+    modules: Vec<String>,
+    #[serde(rename = "dossierVersion")]
+    dossier_version: String,
+}
+
+#[derive(Serialize, Deserialize, Clone, Debug)]
+struct Settings {
+    // App-Name oder absoluter Pfad zur Rhino-App. `open -a` akzeptiert beides:
+    //   "Rhinoceros 8"   -> sucht in /Applications
+    //   "/Applications/Rhino 8.app" oder ein Beta-Build irgendwo anders.
+    #[serde(rename = "rhinoApp")]
+    rhino_app: String,
+}
+
+impl Default for Settings {
+    fn default() -> Self {
+        Self {
+            rhino_app: "Rhinoceros 8".into(),
+        }
+    }
+}
+
+fn dossier_dir() -> PathBuf {
+    // ~/Library/Application Support/Dossier auf macOS,
+    // entsprechend Plattform-Pendants sonst.
+    let dir = directories::ProjectDirs::from("ch", "gabrielevarano", "Dossier")
+        .map(|p| p.data_dir().to_path_buf())
+        .unwrap_or_else(|| PathBuf::from("."));
+    fs::create_dir_all(&dir).ok();
+    dir
+}
+
+fn recent_path() -> PathBuf {
+    dossier_dir().join("recent.json")
+}
+
+fn settings_path() -> PathBuf {
+    dossier_dir().join("settings.json")
+}
+
+fn load_settings() -> Settings {
+    let p = settings_path();
+    if !p.exists() {
+        return Settings::default();
+    }
+    fs::read_to_string(&p)
+        .ok()
+        .and_then(|raw| serde_json::from_str(&raw).ok())
+        .unwrap_or_default()
+}
+
+#[tauri::command]
+fn list_recent() -> Vec<Project> {
+    let p = recent_path();
+    if !p.exists() {
+        return vec![];
+    }
+    let raw = fs::read_to_string(&p).unwrap_or_default();
+    serde_json::from_str(&raw).unwrap_or_default()
+}
+
+#[tauri::command]
+fn save_recent(projects: Vec<Project>) -> Result<(), String> {
+    let p = recent_path();
+    let raw = serde_json::to_string_pretty(&projects).map_err(|e| e.to_string())?;
+    fs::write(&p, raw).map_err(|e| format!("recent.json schreiben: {e}"))
+}
+
+#[tauri::command]
+fn write_project_config(
+    path3dm: String,
+    name: String,
+    modules: Vec<String>,
+) -> Result<(), String> {
+    let p = Path::new(&path3dm);
+    let dir = p
+        .parent()
+        .ok_or_else(|| format!("Kein gueltiger Ordner aus Pfad: {path3dm}"))?;
+    let config_path = dir.join("dossier.project.json");
+    let config = ProjectConfig {
+        name,
+        modules,
+        dossier_version: env!("CARGO_PKG_VERSION").to_string(),
+    };
+    let raw = serde_json::to_string_pretty(&config).map_err(|e| e.to_string())?;
+    fs::write(&config_path, raw).map_err(|e| format!("project-config schreiben: {e}"))
+}
+
+#[tauri::command]
+fn read_project_config(path3dm: String) -> Result<Option<ProjectConfig>, String> {
+    let p = Path::new(&path3dm);
+    let dir = p.parent().ok_or_else(|| "Pfad ungueltig".to_string())?;
+    let config_path = dir.join("dossier.project.json");
+    if !config_path.exists() {
+        return Ok(None);
+    }
+    let raw = fs::read_to_string(&config_path).map_err(|e| e.to_string())?;
+    let cfg: ProjectConfig = serde_json::from_str(&raw).map_err(|e| e.to_string())?;
+    Ok(Some(cfg))
+}
+
+#[tauri::command]
+fn open_rhino(path3dm: String) -> Result<(), String> {
+    // macOS: `open -a <app> <file>`. `<app>` kann ein App-Name (in /Applications
+    // gesucht) oder ein absoluter Pfad zur .app sein. Aus den Settings — Default
+    // "Rhinoceros 8", falls der User nichts angepasst hat.
+    let settings = load_settings();
+    Command::new("open")
+        .args(["-a", &settings.rhino_app, &path3dm])
+        .spawn()
+        .map_err(|e| format!(
+            "open-Befehl fehlgeschlagen ({}): {e}", settings.rhino_app
+        ))?;
+    Ok(())
+}
+
+#[tauri::command]
+fn read_settings() -> Settings {
+    load_settings()
+}
+
+#[tauri::command]
+fn save_settings(settings: Settings) -> Result<(), String> {
+    let raw = serde_json::to_string_pretty(&settings).map_err(|e| e.to_string())?;
+    fs::write(settings_path(), raw).map_err(|e| format!("settings.json schreiben: {e}"))
+}
+
+#[tauri::command]
+fn read_modules_manifest() -> Result<serde_json::Value, String> {
+    serde_json::from_str(MODULES_JSON).map_err(|e| e.to_string())
+}
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    tauri::Builder::default()
+        .plugin(tauri_plugin_dialog::init())
+        .invoke_handler(tauri::generate_handler![
+            list_recent,
+            save_recent,
+            write_project_config,
+            read_project_config,
+            open_rhino,
+            read_modules_manifest,
+            read_settings,
+            save_settings
+        ])
+        .run(tauri::generate_context!())
+        .expect("Fehler beim Starten der Tauri-App");
+}
diff --git a/launcher/src-tauri/src/main.rs b/launcher/src-tauri/src/main.rs
new file mode 100644
index 0000000..be2ffcf
--- /dev/null
+++ b/launcher/src-tauri/src/main.rs
@@ -0,0 +1,5 @@
+// Tauri 2 Konvention: main.rs ist nur Einstieg, Logik in lib.rs (fuer Mobile-
+// Unterstuetzung und damit `tauri::generate_context!` korrekt aufgeloest wird).
+fn main() {
+    dossier_launcher_lib::run()
+}
diff --git a/launcher/src-tauri/tauri.conf.json b/launcher/src-tauri/tauri.conf.json
new file mode 100644
index 0000000..2537a7c
--- /dev/null
+++ b/launcher/src-tauri/tauri.conf.json
@@ -0,0 +1,42 @@
+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "Dossier",
+  "version": "0.1.0",
+  "identifier": "ch.gabrielevarano.dossier",
+  "build": {
+    "beforeDevCommand": "npm run dev",
+    "beforeBuildCommand": "(cd .. && npm run build) && npm run build",
+    "devUrl": "http://127.0.0.1:5183",
+    "frontendDist": "../dist"
+  },
+  "app": {
+    "windows": [
+      {
+        "label": "main",
+        "title": "Dossier",
+        "width": 920,
+        "height": 640,
+        "minWidth": 720,
+        "minHeight": 480,
+        "resizable": true,
+        "fullscreen": false
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": ["app", "dmg"],
+    "icon": ["icons/icon.png"],
+    "copyright": "© 2026 Karim Gabriele Varano",
+    "category": "DeveloperTool",
+    "shortDescription": "Dossier Launcher",
+    "longDescription": "Projekt-Launcher fuer das Dossier-Plugin in Rhino 8.",
+    "resources": {
+      "../../dist": "dist",
+      "../../rhino": "rhino"
+    }
+  }
+}
diff --git a/launcher/src/App.jsx b/launcher/src/App.jsx
new file mode 100644
index 0000000..60b213e
--- /dev/null
+++ b/launcher/src/App.jsx
@@ -0,0 +1,325 @@
+import React, { useEffect, useState, useMemo } from 'react'
+import { invoke } from '@tauri-apps/api/core'
+import { open as openDialog, save as saveDialog } from '@tauri-apps/plugin-dialog'
+
+// Transitive Dependency-Aufloesung: gibt Set aller Module zurueck, die
+// aktiviert sein muessen, wenn `selected` aktiviert sind.
+function resolveDeps(selected, allModules) {
+  const byId = Object.fromEntries(allModules.map(m => [m.id, m]))
+  const out = new Set(selected)
+  let changed = true
+  while (changed) {
+    changed = false
+    for (const id of [...out]) {
+      const m = byId[id]
+      if (!m) continue
+      for (const dep of (m.dependsOn || [])) {
+        if (!out.has(dep)) { out.add(dep); changed = true }
+      }
+    }
+  }
+  return out
+}
+
+// Modul-IDs, die aktuell aktiv sind WEIL eine andere Auswahl sie braucht.
+function lockedBy(selected, allModules) {
+  const byId = Object.fromEntries(allModules.map(m => [m.id, m]))
+  const locked = new Set()
+  for (const id of selected) {
+    const m = byId[id]
+    if (!m) continue
+    for (const dep of (m.dependsOn || [])) {
+      if (selected.has(dep) || selected.has(id)) locked.add(dep)
+    }
+  }
+  return locked
+}
+
+function formatRelative(iso) {
+  if (!iso) return ''
+  try {
+    const d = new Date(iso)
+    const now = new Date()
+    const diff = (now - d) / 1000
+    if (diff < 60)        return 'vor wenigen Sek.'
+    if (diff < 3600)      return `vor ${Math.floor(diff/60)} Min.`
+    if (diff < 86400)     return `vor ${Math.floor(diff/3600)} h`
+    if (diff < 86400 * 7) return `vor ${Math.floor(diff/86400)} Tagen`
+    return d.toLocaleDateString('de-CH')
+  } catch { return '' }
+}
+
+export default function App() {
+  const [recent, setRecent] = useState([])
+  const [modules, setModules] = useState([])
+  const [dialog, setDialog] = useState(null)       // null | { mode: 'new'|'edit', project? }
+  const [settingsOpen, setSettingsOpen] = useState(false)
+  const [busy, setBusy] = useState(false)
+
+  useEffect(() => {
+    invoke('list_recent').then(setRecent).catch(console.error)
+    invoke('read_modules_manifest').then(setModules).catch(console.error)
+  }, [])
+
+  const refresh = () => invoke('list_recent').then(setRecent).catch(console.error)
+
+  const openProject = async (proj) => {
+    if (busy) return
+    setBusy(true)
+    try {
+      await invoke('open_rhino', { path3dm: proj.path })
+      const next = recent.map(p =>
+        p.path === proj.path ? { ...p, lastOpened: new Date().toISOString() } : p
+      )
+      await invoke('save_recent', { projects: next })
+      setRecent(next)
+    } catch (ex) {
+      alert(`Rhino-Start fehlgeschlagen: ${ex}`)
+    } finally {
+      setBusy(false)
+    }
+  }
+
+  const editProject = (proj) => {
+    setDialog({ mode: 'edit', project: proj })
+  }
+
+  const saveProject = async ({ name, path, modules: mods }) => {
+    if (!path) { alert('Bitte eine .3dm-Datei auswaehlen.'); return }
+    if (!name.trim()) { alert('Bitte einen Projekt-Namen angeben.'); return }
+    try {
+      await invoke('write_project_config', { path3dm: path, name: name.trim(), modules: mods })
+      const others = recent.filter(p => p.path !== path)
+      const next = [{ name: name.trim(), path, modules: mods,
+                      lastOpened: new Date().toISOString() }, ...others]
+      await invoke('save_recent', { projects: next })
+      setRecent(next)
+      setDialog(null)
+    } catch (ex) {
+      alert(`Speichern fehlgeschlagen: ${ex}`)
+    }
+  }
+
+  const removeProject = async (proj) => {
+    const next = recent.filter(p => p.path !== proj.path)
+    await invoke('save_recent', { projects: next })
+    setRecent(next)
+  }
+
+  return (
+    <div className="app">
+      <div className="topbar">
+        <span className="brand">DOSSIER</span>
+        <span className="version">0.1.0</span>
+        <div className="spacer" />
+        <button onClick={() => setDialog({ mode: 'new' })}>Neues Projekt</button>
+        <button onClick={() => setSettingsOpen(true)} title="Einstellungen"
+                style={{ padding: '6px 10px' }}>⚙</button>
+      </div>
+
+      <div className="main">
+        <h2 className="section-title">Kuerzlich geoeffnet</h2>
+        {recent.length === 0 ? (
+          <div className="empty">
+            Noch keine Projekte. Klick „Neues Projekt" zum Starten.
+          </div>
+        ) : (
+          <div className="project-list">
+            {recent.map(p => (
+              <div key={p.path} className="project-card"
+                   onDoubleClick={() => openProject(p)}>
+                <div style={{ flex: 1, minWidth: 0 }}>
+                  <div className="name">{p.name}</div>
+                  <div className="path">{p.path}</div>
+                </div>
+                <div className="meta">
+                  {p.modules?.length || 0} Module · {formatRelative(p.lastOpened)}
+                </div>
+                <button onClick={() => editProject(p)}>Bearbeiten</button>
+                <button className="primary" disabled={busy}
+                        onClick={() => openProject(p)}>
+                  Öffnen
+                </button>
+                <button onClick={() => removeProject(p)} title="Aus Liste entfernen">×</button>
+              </div>
+            ))}
+          </div>
+        )}
+      </div>
+
+      {dialog && (
+        <ProjectDialog
+          mode={dialog.mode}
+          project={dialog.project}
+          modules={modules}
+          onCancel={() => setDialog(null)}
+          onSave={saveProject}
+        />
+      )}
+      {settingsOpen && (
+        <SettingsDialog onClose={() => setSettingsOpen(false)} />
+      )}
+    </div>
+  )
+}
+
+function SettingsDialog({ onClose }) {
+  const [rhinoApp, setRhinoApp] = useState('')
+  const [loaded, setLoaded] = useState(false)
+
+  useEffect(() => {
+    invoke('read_settings')
+      .then(s => { setRhinoApp(s.rhinoApp || 'Rhinoceros 8'); setLoaded(true) })
+      .catch(() => { setRhinoApp('Rhinoceros 8'); setLoaded(true) })
+  }, [])
+
+  const pickRhino = async () => {
+    // .app-Bundles sind technisch Ordner, macOS behandelt sie aber im File-Picker
+    // als auswaehlbare Pakete, wenn der Extension-Filter "app" gesetzt ist.
+    // directory:true wuerde stattdessen reinnavigieren — falsch.
+    const sel = await openDialog({
+      title: 'Rhino-App waehlen',
+      filters: [{ name: 'Anwendung', extensions: ['app'] }],
+      defaultPath: '/Applications',
+    })
+    if (typeof sel === 'string') setRhinoApp(sel)
+  }
+
+  const useDefault = () => setRhinoApp('Rhinoceros 8')
+
+  const save = async () => {
+    try {
+      await invoke('save_settings', { settings: { rhinoApp: rhinoApp.trim() || 'Rhinoceros 8' } })
+      onClose()
+    } catch (ex) {
+      alert(`Speichern fehlgeschlagen: ${ex}`)
+    }
+  }
+
+  if (!loaded) return null
+
+  return (
+    <div className="dialog-bg" onClick={(e) => { if (e.target === e.currentTarget) onClose() }}>
+      <div className="dialog" style={{ width: 520 }}>
+        <header>Einstellungen</header>
+        <div className="body">
+          <div className="row">
+            <label>Rhino-Anwendung</label>
+            <div className="file-picker">
+              <input type="text" value={rhinoApp}
+                     onChange={e => setRhinoApp(e.target.value)}
+                     placeholder="Rhinoceros 8" />
+              <button onClick={pickRhino}>Waehlen…</button>
+            </div>
+            <div style={{ fontSize: 11, color: 'var(--text-muted)', lineHeight: 1.5 }}>
+              App-Name (in /Applications gesucht) oder absoluter Pfad zur .app.
+              Beispiele:<br />
+              <code style={{ fontFamily: 'var(--mono)' }}>Rhinoceros 8</code> · <code style={{ fontFamily: 'var(--mono)' }}>/Applications/Rhino 8.app</code> · <code style={{ fontFamily: 'var(--mono)' }}>/Applications/Rhino 8 WIP.app</code>
+              <button onClick={useDefault} style={{ display: 'block', marginTop: 8, fontSize: 11 }}>
+                Standard verwenden
+              </button>
+            </div>
+          </div>
+        </div>
+        <footer>
+          <button onClick={onClose}>Abbrechen</button>
+          <button className="primary" onClick={save}>Speichern</button>
+        </footer>
+      </div>
+    </div>
+  )
+}
+
+function ProjectDialog({ mode, project, modules, onCancel, onSave }) {
+  const [name, setName] = useState(project?.name || '')
+  const [path, setPath] = useState(project?.path || '')
+  const [picked, setPicked] = useState(new Set(project?.modules || ['ebenen', 'oberleiste']))
+
+  const effective = useMemo(() => resolveDeps(picked, modules), [picked, modules])
+  const locked    = useMemo(() => {
+    // Module, die aktiv sind, aber NICHT direkt gewaehlt — also nur als Dep
+    const out = new Set()
+    for (const id of effective) {
+      if (!picked.has(id)) out.add(id)
+    }
+    return out
+  }, [picked, effective, modules])
+
+  const toggle = (id) => {
+    if (locked.has(id)) return  // nicht direkt abwaehlbar
+    setPicked(prev => {
+      const next = new Set(prev)
+      if (next.has(id)) next.delete(id); else next.add(id)
+      return next
+    })
+  }
+
+  const pickFile = async () => {
+    const sel = mode === 'new'
+      ? await openDialog({
+          title: '3dm-Datei auswaehlen',
+          filters: [{ name: 'Rhino', extensions: ['3dm'] }],
+        })
+      : await openDialog({
+          title: '3dm-Datei auswaehlen',
+          filters: [{ name: 'Rhino', extensions: ['3dm'] }],
+        })
+    if (typeof sel === 'string') setPath(sel)
+  }
+
+  return (
+    <div className="dialog-bg" onClick={(e) => { if (e.target === e.currentTarget) onCancel() }}>
+      <div className="dialog">
+        <header>{mode === 'new' ? 'Neues Projekt' : 'Projekt bearbeiten'}</header>
+        <div className="body">
+          <div className="row">
+            <label>Projekt-Name</label>
+            <input type="text" value={name} onChange={e => setName(e.target.value)}
+                   placeholder="z.B. Wohnhaus Brunner" autoFocus />
+          </div>
+          <div className="row">
+            <label>3dm-Datei</label>
+            <div className="file-picker">
+              <input type="text" value={path} readOnly
+                     placeholder="Pfad zur 3dm-Datei" />
+              <button onClick={pickFile}>Waehlen…</button>
+            </div>
+          </div>
+          <div className="row">
+            <label>Module ({[...effective].length} aktiv)</label>
+            <div className="module-grid">
+              {modules.map(m => {
+                const isActive = effective.has(m.id)
+                const isLocked = locked.has(m.id)
+                return (
+                  <div
+                    key={m.id}
+                    className={`module-row ${isActive ? 'active' : ''} ${isLocked ? 'locked' : ''}`}
+                    onClick={() => toggle(m.id)}
+                    title={isLocked ? 'Wird von einem anderen Modul gebraucht' : ''}
+                  >
+                    <div className="check">{isActive ? (isLocked ? '🔒' : '✓') : ''}</div>
+                    <div className="info">
+                      <div className="name">{m.name}</div>
+                      <div className="desc">{m.description}</div>
+                      {(m.dependsOn || []).length > 0 && (
+                        <div className="dep">braucht: {m.dependsOn.join(', ')}</div>
+                      )}
+                    </div>
+                  </div>
+                )
+              })}
+            </div>
+          </div>
+        </div>
+        <footer>
+          <button onClick={onCancel}>Abbrechen</button>
+          <button className="primary"
+                  onClick={() => onSave({ name, path, modules: [...effective] })}>
+            Speichern
+          </button>
+        </footer>
+      </div>
+    </div>
+  )
+}
diff --git a/launcher/src/main.jsx b/launcher/src/main.jsx
new file mode 100644
index 0000000..fe5a9e3
--- /dev/null
+++ b/launcher/src/main.jsx
@@ -0,0 +1,6 @@
+import React from 'react'
+import { createRoot } from 'react-dom/client'
+import App from './App.jsx'
+import './styles.css'
+
+createRoot(document.getElementById('root')).render(<App />)
diff --git a/launcher/src/styles.css b/launcher/src/styles.css
new file mode 100644
index 0000000..0cc1156
--- /dev/null
+++ b/launcher/src/styles.css
@@ -0,0 +1,231 @@
+:root {
+  --bg-base:    #1c1c1e;
+  --bg-panel:   #2a2a2c;
+  --bg-elev:    #34343a;
+  --border:     #3a3a3e;
+  --text:       #eaeaea;
+  --text-muted: #8a8a8e;
+  --accent:     #5a9e5a;
+  --accent-hover: #6cb56c;
+  --danger:     #c87050;
+  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
+  --mono: 'DM Mono', 'Menlo', monospace;
+}
+
+* { box-sizing: border-box; }
+
+html, body, #root {
+  margin: 0;
+  padding: 0;
+  height: 100%;
+  background: var(--bg-base);
+  color: var(--text);
+  font-family: var(--font);
+  font-size: 13px;
+  -webkit-font-smoothing: antialiased;
+  user-select: none;
+}
+
+button {
+  font-family: inherit;
+  font-size: inherit;
+  background: var(--bg-elev);
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  padding: 6px 12px;
+  cursor: pointer;
+  transition: background 0.1s ease;
+}
+button:hover:not(:disabled) { background: #404048; }
+button:disabled { opacity: 0.4; cursor: not-allowed; }
+button.primary {
+  background: var(--accent);
+  border-color: var(--accent);
+  color: white;
+}
+button.primary:hover:not(:disabled) { background: var(--accent-hover); }
+
+input[type="text"] {
+  font-family: inherit;
+  font-size: inherit;
+  background: var(--bg-base);
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  padding: 6px 10px;
+  outline: none;
+}
+input[type="text"]:focus { border-color: var(--accent); }
+
+.app {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+}
+.topbar {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 14px 20px;
+  border-bottom: 1px solid var(--border);
+  background: var(--bg-panel);
+}
+.topbar .brand {
+  font-family: var(--mono);
+  font-size: 12px;
+  font-weight: 600;
+  letter-spacing: 0.12em;
+  color: var(--text-muted);
+}
+.topbar .version {
+  font-family: var(--mono);
+  font-size: 10px;
+  color: var(--text-muted);
+  opacity: 0.6;
+}
+.topbar .spacer { flex: 1; }
+
+.main { flex: 1; overflow-y: auto; padding: 20px; }
+
+.section-title {
+  font-size: 11px;
+  font-weight: 600;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+  color: var(--text-muted);
+  margin: 0 0 12px 0;
+}
+
+.project-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.project-card {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 12px 14px;
+  background: var(--bg-panel);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  cursor: pointer;
+  transition: border-color 0.1s ease;
+}
+.project-card:hover { border-color: #555; }
+.project-card .name {
+  font-weight: 500;
+  margin-bottom: 2px;
+}
+.project-card .path {
+  font-family: var(--mono);
+  font-size: 11px;
+  color: var(--text-muted);
+}
+.project-card .meta {
+  font-size: 11px;
+  color: var(--text-muted);
+}
+
+.empty {
+  padding: 40px;
+  text-align: center;
+  color: var(--text-muted);
+  font-size: 12px;
+}
+
+.module-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 8px;
+}
+.module-row {
+  display: flex;
+  align-items: flex-start;
+  gap: 10px;
+  padding: 10px 12px;
+  background: var(--bg-panel);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  cursor: pointer;
+}
+.module-row.locked { opacity: 0.7; cursor: default; }
+.module-row .check {
+  flex-shrink: 0;
+  width: 16px;
+  height: 16px;
+  border-radius: 4px;
+  border: 1.5px solid var(--border);
+  background: var(--bg-base);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 11px;
+  color: white;
+}
+.module-row.active .check { background: var(--accent); border-color: var(--accent); }
+.module-row.locked .check { background: #555; border-color: #555; }
+.module-row .info { flex: 1; min-width: 0; }
+.module-row .info .name { font-weight: 500; margin-bottom: 2px; }
+.module-row .info .desc { font-size: 11px; color: var(--text-muted); line-height: 1.4; }
+.module-row .info .dep {
+  font-family: var(--mono);
+  font-size: 10px;
+  color: var(--text-muted);
+  margin-top: 4px;
+}
+
+.dialog-bg {
+  position: fixed; inset: 0;
+  background: rgba(0,0,0,0.6);
+  display: flex; align-items: center; justify-content: center;
+  z-index: 10;
+}
+.dialog {
+  width: 600px; max-width: 90vw;
+  max-height: 90vh;
+  background: var(--bg-base);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+.dialog header {
+  padding: 14px 18px;
+  border-bottom: 1px solid var(--border);
+  font-weight: 500;
+}
+.dialog .body {
+  padding: 18px;
+  flex: 1;
+  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+}
+.dialog .row {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+.dialog .row label {
+  font-size: 11px;
+  color: var(--text-muted);
+  letter-spacing: 0.05em;
+  text-transform: uppercase;
+}
+.dialog footer {
+  padding: 12px 18px;
+  border-top: 1px solid var(--border);
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+}
+.file-picker {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+.file-picker input { flex: 1; font-family: var(--mono); font-size: 11px; }
diff --git a/launcher/vite.config.js b/launcher/vite.config.js
new file mode 100644
index 0000000..55337c3
--- /dev/null
+++ b/launcher/vite.config.js
@@ -0,0 +1,26 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+
+// Tauri-spezifisch: kein Browser-Open, fixer Port, ignoriert src-tauri fuer Hot-Reload.
+export default defineConfig({
+  plugins: [react()],
+  clearScreen: false,
+  server: {
+    // Eigener Port (nicht 5173/5174 — die nutzen andere Studio-Projekte wie
+    // Rapport). Host explizit IPv4, weil Tauri's devUrl auf 127.0.0.1
+    // bindet — sonst kann Tauri auf [::1]:<port> eines anderen Vite-Servers
+    // landen, wenn localhost zuerst zu IPv6 resolved.
+    port: 5183,
+    strictPort: true,
+    host: '127.0.0.1',
+  },
+  envPrefix: ['VITE_', 'TAURI_'],
+  build: {
+    outDir: 'dist',
+    target: 'safari14',
+    // Vite 8: 'oxc' ist der eingebaute Rust-Minifier (default). 'esbuild'
+    // wuerde ein separates Paket erfordern — nicht noetig fuer uns.
+    minify: 'oxc',
+    sourcemap: false,
+  },
+})
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..7a6269d
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,2458 @@
+{
+  "name": "rhino-panel",
+  "version": "0.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "rhino-panel",
+      "version": "0.0.0",
+      "dependencies": {
+        "react": "^19.2.6",
+        "react-dom": "^19.2.6"
+      },
+      "devDependencies": {
+        "@eslint/js": "^10.0.1",
+        "@types/react": "^19.2.14",
+        "@types/react-dom": "^19.2.3",
+        "@vitejs/plugin-react": "^6.0.1",
+        "eslint": "^10.3.0",
+        "eslint-plugin-react-hooks": "^7.1.1",
+        "eslint-plugin-react-refresh": "^0.5.2",
+        "globals": "^17.6.0",
+        "vite": "^8.0.12"
+      }
+    },
+    "node_modules/@babel/code-frame": {
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.0.tgz",
+      "integrity": "sha512-9NhCeYjq9+3uxgdtp20LSiJXJvN0FeCtNGpJxuMFZ1Kv3cWUNb6DOhJwUvcVCzKGR66cw4njwM6hrJLqgOwbcw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-validator-identifier": "^7.28.5",
+        "js-tokens": "^4.0.0",
+        "picocolors": "^1.1.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/compat-data": {
+      "version": "7.29.3",
+      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.29.3.tgz",
+      "integrity": "sha512-LIVqM46zQWZhj17qA8wb4nW/ixr2y1Nw+r1etiAWgRM6U1IqP+LNhL1yg440jYZR72jCWcWbLWzIosH+uP1fqg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      }
+    },
+    "node_modules/@babel/core": {
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.29.0.tgz",
+      "integrity": "sha512-CGOfOJqWjg2qW/Mb6zNsDm+u5vFQ8DxXfbM09z69p5Z6+mE1ikP2jUXw+j42Pf1XTYED2Rni5f95npYeuwMDQA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
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+        "@babel/generator": "^7.29.0",
+        "@babel/helper-compilation-targets": "^7.28.6",
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+        "@babel/helpers": "^7.28.6",
+        "@babel/parser": "^7.29.0",
+        "@babel/template": "^7.28.6",
+        "@babel/traverse": "^7.29.0",
+        "@babel/types": "^7.29.0",
+        "@jridgewell/remapping": "^2.3.5",
+        "convert-source-map": "^2.0.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.2",
+        "json5": "^2.2.3",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/babel"
+      }
+    },
+    "node_modules/@babel/generator": {
+      "version": "7.29.1",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.29.1.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.29.0",
+        "@babel/types": "^7.29.0",
+        "@jridgewell/gen-mapping": "^0.3.12",
+        "@jridgewell/trace-mapping": "^0.3.28",
+        "jsesc": "^3.0.2"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-compilation-targets": {
+      "version": "7.28.6",
+      "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.28.6.tgz",
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+        "@babel/helper-validator-option": "^7.27.1",
+        "browserslist": "^4.24.0",
+        "lru-cache": "^5.1.1",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-globals": {
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+      "license": "MIT",
+      "dependencies": {
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+        "@babel/helper-validator-identifier": "^7.28.5",
+        "@babel/traverse": "^7.28.6"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0"
+      }
+    },
+    "node_modules/@babel/helper-string-parser": {
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+      "license": "MIT",
+      "engines": {
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+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.29.2.tgz",
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+      "license": "MIT",
+      "dependencies": {
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+      },
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@babel/template": {
+      "version": "7.28.6",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.28.6.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.28.6",
+        "@babel/parser": "^7.28.6",
+        "@babel/types": "^7.28.6"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/traverse": {
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.29.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.29.0",
+        "@babel/generator": "^7.29.0",
+        "@babel/helper-globals": "^7.28.0",
+        "@babel/parser": "^7.29.0",
+        "@babel/template": "^7.28.6",
+        "@babel/types": "^7.29.0",
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--- /dev/null
+++ b/package.json
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diff --git a/public/icons.svg b/public/icons.svg
new file mode 100644
index 0000000..e952219
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+<svg xmlns="http://www.w3.org/2000/svg">
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+    <defs><clipPath id="bluesky-clip"><path fill="#fff" d="M.1.85h15.3v15.3H.1z"/></clipPath></defs>
+  </symbol>
+  <symbol id="discord-icon" viewBox="0 0 20 19">
+    <path fill="#08060d" d="M16.224 3.768a14.5 14.5 0 0 0-3.67-1.153c-.158.286-.343.67-.47.976a13.5 13.5 0 0 0-4.067 0c-.128-.306-.317-.69-.476-.976A14.4 14.4 0 0 0 3.868 3.77C1.546 7.28.916 10.703 1.231 14.077a14.7 14.7 0 0 0 4.5 2.306q.545-.748.965-1.587a9.5 9.5 0 0 1-1.518-.74q.191-.14.372-.293c2.927 1.369 6.107 1.369 8.999 0q.183.152.372.294-.723.437-1.52.74.418.838.963 1.588a14.6 14.6 0 0 0 4.504-2.308c.37-3.911-.63-7.302-2.644-10.309m-9.13 8.234c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.894 0 1.614.82 1.599 1.82.001 1-.705 1.82-1.6 1.82m5.91 0c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.893 0 1.614.82 1.599 1.82 0 1-.706 1.82-1.6 1.82"/>
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+  <symbol id="documentation-icon" viewBox="0 0 21 20">
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="m15.5 13.333 1.533 1.322c.645.555.967.833.967 1.178s-.322.623-.967 1.179L15.5 18.333m-3.333-5-1.534 1.322c-.644.555-.966.833-.966 1.178s.322.623.966 1.179l1.534 1.321"/>
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+  </symbol>
+  <symbol id="github-icon" viewBox="0 0 19 19">
+    <path fill="#08060d" fill-rule="evenodd" d="M9.356 1.85C5.05 1.85 1.57 5.356 1.57 9.694a7.84 7.84 0 0 0 5.324 7.44c.387.079.528-.168.528-.376 0-.182-.013-.805-.013-1.454-2.165.467-2.616-.935-2.616-.935-.349-.91-.864-1.143-.864-1.143-.71-.48.051-.48.051-.48.787.051 1.2.805 1.2.805.695 1.194 1.817.857 2.268.649.064-.507.27-.857.49-1.052-1.728-.182-3.545-.857-3.545-3.87 0-.857.31-1.558.8-2.104-.078-.195-.349-1 .077-2.078 0 0 .657-.208 2.14.805a7.5 7.5 0 0 1 1.946-.26c.657 0 1.328.092 1.946.26 1.483-1.013 2.14-.805 2.14-.805.426 1.078.155 1.883.078 2.078.502.546.799 1.247.799 2.104 0 3.013-1.818 3.675-3.558 3.87.284.247.528.714.528 1.454 0 1.052-.012 1.896-.012 2.156 0 .208.142.455.528.377a7.84 7.84 0 0 0 5.324-7.441c.013-4.338-3.48-7.844-7.773-7.844" clip-rule="evenodd"/>
+  </symbol>
+  <symbol id="social-icon" viewBox="0 0 20 20">
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M12.5 6.667a4.167 4.167 0 1 0-8.334 0 4.167 4.167 0 0 0 8.334 0"/>
+    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M2.5 16.667a5.833 5.833 0 0 1 8.75-5.053m3.837.474.513 1.035c.07.144.257.282.414.309l.93.155c.596.1.736.536.307.965l-.723.73a.64.64 0 0 0-.152.531l.207.903c.164.715-.213.991-.84.618l-.872-.52a.63.63 0 0 0-.577 0l-.872.52c-.624.373-1.003.094-.84-.618l.207-.903a.64.64 0 0 0-.152-.532l-.723-.729c-.426-.43-.289-.864.306-.964l.93-.156a.64.64 0 0 0 .412-.31l.513-1.034c.28-.562.735-.562 1.012 0"/>
+  </symbol>
+  <symbol id="x-icon" viewBox="0 0 19 19">
+    <path fill="#08060d" fill-rule="evenodd" d="M1.893 1.98c.052.072 1.245 1.769 2.653 3.77l2.892 4.114c.183.261.333.48.333.486s-.068.089-.152.183l-.522.593-.765.867-3.597 4.087c-.375.426-.734.834-.798.905a1 1 0 0 0-.118.148c0 .01.236.017.664.017h.663l.729-.83c.4-.457.796-.906.879-.999a692 692 0 0 0 1.794-2.038c.034-.037.301-.34.594-.675l.551-.624.345-.392a7 7 0 0 1 .34-.374c.006 0 .93 1.306 2.052 2.903l2.084 2.965.045.063h2.275c1.87 0 2.273-.003 2.266-.021-.008-.02-1.098-1.572-3.894-5.547-2.013-2.862-2.28-3.246-2.273-3.266.008-.019.282-.332 2.085-2.38l2-2.274 1.567-1.782c.022-.028-.016-.03-.65-.03h-.674l-.3.342a871 871 0 0 1-1.782 2.025c-.067.075-.405.458-.75.852a100 100 0 0 1-.803.91c-.148.172-.299.344-.99 1.127-.304.343-.32.358-.345.327-.015-.019-.904-1.282-1.976-2.808L6.365 1.85H1.8zm1.782.91 8.078 11.294c.772 1.08 1.413 1.973 1.425 1.984.016.017.241.02 1.05.017l1.03-.004-2.694-3.766L7.796 5.75 5.722 2.852l-1.039-.004-1.039-.004z" clip-rule="evenodd"/>
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diff --git a/rhino/DOSSIERUI.rhw b/rhino/DOSSIERUI.rhw
new file mode 100644
index 0000000..77644fb
--- /dev/null
+++ b/rhino/DOSSIERUI.rhw
@@ -0,0 +1,666 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--This file was generated by Rhinoceros, DO NOT modify this file-->
+<RhinoUI major_ver="1" minor_ver="0" created_on_platform="Mac" created_on_rhino_version="8.31.26126.13432" name="PAUSEUI">
+  <!--Window Layout display name for this file-->
+  <name>
+    <locale_1033>PAUSEUI</locale_1033>
+  </name>
+  <!--Tab panel collection definitions and dock bar placement information-->
+  <dock_bars major_ver="1" minor_ver="0">
+    <dock_bar guid="171011a9-a956-41ee-853e-3ccc0c0db1d8" source_group_file="c7da84fc-2991-4824-832a-4f2509bd0ede" source_group="ac3566f9-fe75-4258-9210-b1e9c05a5881">
+      <placement dock_location="Floating" recent_dock_location="Top" dock_band_size="36,48" dock_band_item_size="1,-1" docked_placement="0,0" float_point="226,191" float_size="1000,75" />
+      <tabs name="Standard Toolbars" selected_item="4bb9c817-d19f-45fd-8af2-39e9805f3e9f" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Standard Toolbars</locale_1033>
+          <locale_1029>Standardní palety nástrojů</locale_1029>
+          <locale_1031>Standard-Werkzeugleisten</locale_1031>
+          <locale_1034>Barras de herramientas estándar</locale_1034>
+          <locale_1036>Barres d'outils Standard</locale_1036>
+          <locale_1040>Barre degli strumenti standard</locale_1040>
+          <locale_1041>標準ツールバー</locale_1041>
+          <locale_1042>표준 도구모음</locale_1042>
+          <locale_1045>Standardowe paski narzędzi</locale_1045>
+          <locale_2070>Barras de Ferramentas Standard</locale_2070>
+          <locale_2052>标准工具列</locale_2052>
+          <locale_1028>標準工具列</locale_1028>
+          <locale_1049>Стандартные панели инструментов</locale_1049>
+        </name>
+        <removed_item Item1="3a7f2e1d-4b8c-4d9e-a1b2-c3d4e5f60718" Item2="3a7f2e1d-4b8c-4d9e-a1b2-c3d4e5f60718" />
+        <removed_item Item1="7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51" Item2="7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51" />
+        <tool_bar guid="4bb9c817-d19f-45fd-8af2-39e9805f3e9f" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="32318c40-46e9-4aa3-8f73-09371ec27a4d" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="2ed87e2b-d225-4625-aeda-b11a115c9a14" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
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+        <tool_bar guid="79d0d952-85af-4fe3-8444-46596bbe22fd" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="9772529f-ea7a-4e2f-9dab-5beff3ce96e8" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="0608110b-184c-443f-97ec-0612d9d2b605" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="9f21066b-eb0f-46f5-adeb-d62f80e04fd7" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
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+        <tool_bar guid="4cd9a071-9337-4389-aa40-2a20f570da3b" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="625e34b2-3b19-4aba-91c2-94f79e2e1d91" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="44619cf6-b73a-46ea-93f8-46f1fa333115" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="12428ca8-b9f4-4954-8f6e-8a139226b383" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="a5379863-ee51-4b77-ab0c-44ee93c92ca3" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="fa6d5bcc-8cd8-416b-8701-f89bd697e94d" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="d0a817a1-dea9-4e03-89e3-0d63d99b5e51" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="54dcdb3a-f098-49a4-9947-d5605d675be3" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+        <tool_bar guid="90fd89fc-e41f-49cc-bcf0-29e0d58017a1" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar_colletion="4b37b788-3a60-4c54-a4be-67e756115945" />
+        <tool_bar guid="16770b13-f7fb-4060-a6e6-607f90dd8bb3" file="c7da84fc-2991-4824-832a-4f2509bd0ede" side_bar="42b36785-e767-4c66-8704-4d828bcb0225" side_bar_file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="26b86ed9-12ff-4198-b49e-83bd3dfa7480" source_group_file="c7da84fc-2991-4824-832a-4f2509bd0ede" source_group="12428ca8-b9f4-4954-8f6e-8a139226b383">
+      <placement dock_location="Floating" recent_dock_location="Left" float_point="-1431655808,0" float_size="266,255" />
+      <tabs name="SubD Sidebar" selected_item="aaa213c9-f422-477a-9782-a6ae60104171" display_style="BitmapAndText">
+        <name>
+          <locale_1033>SubD Sidebar</locale_1033>
+          <locale_1029>Postranní panel SubD</locale_1029>
+          <locale_1031>SubD-Seitenleiste</locale_1031>
+          <locale_1034>SubD (lateral)</locale_1034>
+          <locale_1036>Volet SubD</locale_1036>
+          <locale_1040>Barra laterale SubD</locale_1040>
+          <locale_1041>SubDサイドバー</locale_1041>
+          <locale_1042>SubD 사이드바</locale_1042>
+          <locale_1045>SubD - pasek boczny</locale_1045>
+          <locale_2070>Barra Lateral SubD</locale_2070>
+          <locale_2052>细分边栏</locale_2052>
+          <locale_1028>SubD 邊欄</locale_1028>
+          <locale_1049>SubD - боковая</locale_1049>
+        </name>
+        <tool_bar guid="aaa213c9-f422-477a-9782-a6ae60104171" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="2d7ded60-c2e9-4ac1-8297-df58c7e8ac4e">
+      <placement dock_band_size="314,-1" dock_band_item_size="-1,1" docked_placement="0,0" float_point="1309,275" float_size="200,200" visible="True" />
+      <tabs name="EBENEN" selected_item="3a7f2e1d-4b8c-4d9e-a1b2-c3d4e5f60718" display_style="BitmapAndText">
+        <name>
+          <locale_1033>EBENEN</locale_1033>
+        </name>
+        <removed_item Item1="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" Item2="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" />
+        <removed_item Item1="3610bf83-047d-4f7f-93fd-163ea305b493" Item2="3610bf83-047d-4f7f-93fd-163ea305b493" />
+        <removed_item Item1="918191ca-1105-43f9-a34a-dda4276883c1" Item2="918191ca-1105-43f9-a34a-dda4276883c1" />
+        <panel guid="3a7f2e1d-4b8c-4d9e-a1b2-c3d4e5f60718" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="EBENEN" />
+        <panel guid="5c9e4f3f-6d0e-4f1f-b3c4-d5e6f7081a2b" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="AUSSCHNITTE" />
+        <panel guid="562bda2a-184f-4b22-9607-79d992f28557" plug_in="02bf604d-799c-4cc2-830e-8d72f21b14b7" name="Layouts" />
+        <panel guid="de6ef821-9355-445f-a5d5-5e19748a3b7e" plug_in="02bf604d-799c-4cc2-830e-8d72f21b14b7" name="Linetypes" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="303293c9-aad0-4419-994d-6765718a58ed" unmanaged="True" text="Command">
+      <placement dock_location="Left" recent_dock_location="Left" dock_band_size="176,200" dock_band_item_size="-1,0.35093898" docked_placement="0,0" float_point="36,104" float_size="200,200" visible="True" />
+      <tabs name="Container" selected_item="971fdb61-b9c6-4080-b38f-d5c72ce7a577" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Container</locale_1033>
+        </name>
+        <removed_item Item1="c7da84fc-2991-4824-832a-4f2509bd0ede" Item2="1990cfb7-2241-4dd1-b01d-735fe3be65fb" />
+        <removed_item Item1="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" Item2="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" />
+        <removed_item Item1="c7da84fc-2991-4824-832a-4f2509bd0ede" Item2="c3eab84e-9994-4c04-b2ef-aa4060f96168" />
+        <tool_bar guid="971fdb61-b9c6-4080-b38f-d5c72ce7a577" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="39716459-9788-492d-adfd-8d89a7585363">
+      <placement dock_band_size="494,-1" dock_band_item_size="-1,1" docked_placement="0,0" float_point="2113,787" float_size="396,796" />
+      <tabs name="Display &amp; Rendering" selected_item="d9ac0269-811b-47d1-aa33-777986b13715" can_be_empty="True" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Display &amp; Rendering</locale_1033>
+          <locale_1029>Zobrazení a renderování</locale_1029>
+          <locale_1031>Anzeige und Rendering</locale_1031>
+          <locale_1034>Visualización y renderizado</locale_1034>
+          <locale_1036>Affichage et rendu</locale_1036>
+          <locale_1040>Visualizzazione e rendering</locale_1040>
+          <locale_1041>表示 &amp; レンダリング</locale_1041>
+          <locale_1042>표시와 렌더링</locale_1042>
+          <locale_1045>Wyświetlanie i rendering</locale_1045>
+          <locale_2070>Visualização e Renderização</locale_2070>
+          <locale_2052>显示 &amp; 渲染</locale_2052>
+          <locale_1028>顯示 &amp; 彩現</locale_1028>
+          <locale_1049>Отображение и визуализация</locale_1049>
+        </name>
+        <panel guid="d9ac0269-811b-47d1-aa33-777986b13715" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Rendering" />
+        <panel guid="6df2a957-f12d-42ea-9fa6-95d7920c1b76" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Materials" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="4711e685-da6b-40e7-8da8-725c8f104065" source_group_file="c7da84fc-2991-4824-832a-4f2509bd0ede" source_group="625e34b2-3b19-4aba-91c2-94f79e2e1d91">
+      <placement dock_location="Floating" recent_dock_location="Top" float_point="-1431655808,0" float_size="276,216" />
+      <tabs name="Solids Sidebar" selected_item="f1c8658b-c36e-4835-9492-14fce56924db" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Solids Sidebar</locale_1033>
+          <locale_1029>Postranní panel Tělesa</locale_1029>
+          <locale_1031>Volumenkörper-Seitenleiste</locale_1031>
+          <locale_1034>Sólidos (lateral)</locale_1034>
+          <locale_1036>Volet Solides</locale_1036>
+          <locale_1040>Barra laterale Solidi</locale_1040>
+          <locale_1041>ソリッドサイドバー</locale_1041>
+          <locale_1042>솔리드 사이드바</locale_1042>
+          <locale_1045>Bryły - pasek boczny</locale_1045>
+          <locale_2070>Barra lateral de Sólidos</locale_2070>
+          <locale_2052>实体边栏</locale_2052>
+          <locale_1028>實體邊欄</locale_1028>
+          <locale_1049>Тела - боковая</locale_1049>
+        </name>
+        <tool_bar guid="f1c8658b-c36e-4835-9492-14fce56924db" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="49d50abe-9f4d-4043-81f7-7ab1574681e8">
+      <placement dock_location="Top" recent_dock_location="Top" dock_band_size="-1,38" dock_band_item_size="1,-1" docked_placement="0,0" float_point="442,57" float_size="200,200" visible="True" />
+      <tabs name="OBERLEISTE" selected_item="7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51" display_style="BitmapAndText">
+        <name>
+          <locale_1033>OBERLEISTE</locale_1033>
+        </name>
+        <panel guid="7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="OBERLEISTE" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="4b37b788-3a60-4c54-a4be-67e756115945">
+      <placement dock_location="Floating" float_point="-1400,688" float_size="200,200" />
+      <tabs name="Curve drawing sidebar" selected_item="1990cfb7-2241-4dd1-b01d-735fe3be65fb" can_be_empty="True" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Curve drawing sidebar</locale_1033>
+          <locale_1029>Postranní panel Křivka</locale_1029>
+          <locale_1031>Kurvenzeichnung-Seitenleiste</locale_1031>
+          <locale_1034>Dibujo de curvas (lateral)</locale_1034>
+          <locale_1036>Volet Dessin de courbes</locale_1036>
+          <locale_1040>Barra laterale disegno curve</locale_1040>
+          <locale_1041>曲線作成サイドバー</locale_1041>
+          <locale_1042>커브 그리기 사이드바</locale_1042>
+          <locale_1045>Rysowanie krzywych - pasek boczny</locale_1045>
+          <locale_2070>Barra lateral de desenhar curva</locale_2070>
+          <locale_2052>曲线绘制边栏</locale_2052>
+          <locale_1028>繪製曲線邊欄</locale_1028>
+          <locale_1049>Кривые - боковая</locale_1049>
+        </name>
+        <tool_bar guid="1990cfb7-2241-4dd1-b01d-735fe3be65fb" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="50eb6c7b-0be0-4166-ad17-ea694c97a6f4" text="Drag Strength">
+      <placement dock_location="Floating" dock_band_size="222,69" float_point="500,400" float_size="230,77" />
+    </dock_bar>
+    <dock_bar guid="515a8004-3ff8-49e5-ac9a-356dab83a2d7">
+      <placement dock_location="Floating" recent_dock_location="Bottom" dock_band_size="-1,61" docked_placement="0,1" float_point="526,177" float_size="730,663" />
+      <tabs name="Layers" selected_item="3610bf83-047d-4f7f-93fd-163ea305b493" torn_off="True" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Layers</locale_1033>
+        </name>
+        <panel guid="3610bf83-047d-4f7f-93fd-163ea305b493" plug_in="a6f26df9-1ffd-4cf3-b1ec-a11a28a40892" name="Layers" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="5a5b89a0-830f-c90d-5f60-35c2e907e18c">
+      <placement dock_location="Floating" dock_band_size="250,200" dock_band_item_size="-1,1" docked_placement="0,0" float_point="318,215" float_size="400,574" />
+      <tabs name="Right Container" selected_item="b68e9e9f-c79c-473c-a7ef-846a11dc4e7b" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Right Container</locale_1033>
+          <locale_1029>Pravý kontejner</locale_1029>
+          <locale_1031>Rechter Container</locale_1031>
+          <locale_1034>Contenedor derecho</locale_1034>
+          <locale_1036>Conteneur droit</locale_1036>
+          <locale_1040>Contenitore destro</locale_1040>
+          <locale_1041>右コンテナ</locale_1041>
+          <locale_1042>오른쪽 컨테이너</locale_1042>
+          <locale_1045>Prawy zbiornik</locale_1045>
+          <locale_2070>Contentor Direito</locale_2070>
+          <locale_2052>右侧容器</locale_2052>
+          <locale_1028>右側容器</locale_1028>
+          <locale_1049>Правый контейнер</locale_1049>
+        </name>
+        <removed_item Item1="562bda2a-184f-4b22-9607-79d992f28557" Item2="562bda2a-184f-4b22-9607-79d992f28557" />
+        <panel guid="b68e9e9f-c79c-473c-a7ef-846a11dc4e7b" name="Display" />
+        <panel guid="0f8fb4f9-c213-4a6e-8e79-0bece02df82a" plug_in="a6f26df9-1ffd-4cf3-b1ec-a11a28a40892" name="Help" />
+        <panel guid="34ffb674-c504-49d9-9fcd-99cc811dcda2" plug_in="a6f26df9-1ffd-4cf3-b1ec-a11a28a40892" name="Properties" />
+        <panel guid="6df55e69-e102-4a72-b181-11664046c93f" plug_in="02bf604d-799c-4cc2-830e-8d72f21b14b7" name="Layer States" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="646dd24d-5637-49bf-a7d1-1610285ea402">
+      <placement dock_location="Left" recent_dock_location="Left" dock_band_size="176,-1" dock_band_item_size="-1,0.649061" docked_placement="0,1" float_point="75,120" float_size="200,200" visible="True" />
+      <tabs name="GESTALTUNG" selected_item="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" display_style="BitmapAndText">
+        <name>
+          <locale_1033>GESTALTUNG</locale_1033>
+        </name>
+        <panel guid="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="GESTALTUNG" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="663028ce-8797-466b-a833-9fd338f4bee2">
+      <placement dock_location="Floating" float_point="1186,0" float_size="200,200" />
+      <tabs name="OVERRIDES" selected_item="8f2a7b6c-9f3a-4f4d-e6f7-08192a3c4d62" display_style="BitmapAndText">
+        <name>
+          <locale_1033>OVERRIDES</locale_1033>
+        </name>
+        <panel guid="8f2a7b6c-9f3a-4f4d-e6f7-08192a3c4d62" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="OVERRIDES" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="78ce0f5a-73ce-4268-b6c9-7d815cfc9f04" source_group_file="c7da84fc-2991-4824-832a-4f2509bd0ede" source_group="54dcdb3a-f098-49a4-9947-d5605d675be3">
+      <placement dock_location="Floating" recent_dock_location="Top" float_point="500,215" float_size="276,258" />
+      <tabs name="Render Sidebar" selected_item="ee7a5f30-1d7c-4a0f-9ebc-138d9c096aeb" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Render Sidebar</locale_1033>
+          <locale_1029>Postranní panel Render</locale_1029>
+          <locale_1031>Render-Seitenleiste</locale_1031>
+          <locale_1034>Renderizado (lateral)</locale_1034>
+          <locale_1036>Volet Rendu</locale_1036>
+          <locale_1040>Barra laterale Rendering</locale_1040>
+          <locale_1041>レンダリングサイドバー</locale_1041>
+          <locale_1042>렌더링 사이드바</locale_1042>
+          <locale_1045>Rendering - pasek boczny</locale_1045>
+          <locale_2070>Barra lateral de Renderizar</locale_2070>
+          <locale_2052>渲染边栏</locale_2052>
+          <locale_1028>彩現邊欄</locale_1028>
+          <locale_1049>Визуализация - боковая</locale_1049>
+        </name>
+        <tool_bar guid="ee7a5f30-1d7c-4a0f-9ebc-138d9c096aeb" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="7ed74116-8783-46fe-9fe1-937283478ea9">
+      <placement dock_location="Floating" float_point="1196,6" float_size="200,200" />
+      <tabs name="OBERLEISTE" selected_item="7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51" display_style="BitmapAndText">
+        <name>
+          <locale_1033>OBERLEISTE</locale_1033>
+        </name>
+        <panel guid="7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="OBERLEISTE" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="8b7142c1-c80b-4f2d-aa2a-b53548818d2b">
+      <placement dock_location="Floating" recent_dock_location="Left" dock_band_size="176,-1" dock_band_item_size="-1,0.33333334" docked_placement="0,1" float_point="98,411" float_size="200,200" />
+      <tabs name="WERKZEUGE" selected_item="6d9f5040-7e1f-4f2b-c4d5-f6071829304a" display_style="BitmapAndText">
+        <name>
+          <locale_1033>WERKZEUGE</locale_1033>
+        </name>
+        <panel guid="6d9f5040-7e1f-4f2b-c4d5-f6071829304a" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="WERKZEUGE" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="8e0d2079-7bb7-4ba0-b6ed-f16b9a33e67c">
+      <placement dock_location="Floating" dock_band_size="381,-1" dock_band_item_size="-1,1" docked_placement="1,0" float_point="617,148" float_size="396,796" />
+      <tabs name="Named Views" selected_item="8df2a957-f12d-42ea-9fa6-95d7920c1b76" torn_off="True" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Named Views</locale_1033>
+          <locale_1029>Pojmenované pohledy</locale_1029>
+          <locale_1031>Benannte Ansichten</locale_1031>
+          <locale_1034>Vistas guardadas</locale_1034>
+          <locale_1036>Vues nommées</locale_1036>
+          <locale_1040>Viste con nome</locale_1040>
+          <locale_1041>名前の付いたビュー</locale_1041>
+          <locale_1042>명명된 뷰</locale_1042>
+          <locale_1045>Nazwane widoki</locale_1045>
+          <locale_2070>Vistas Com Nome</locale_2070>
+          <locale_2052>已命名视图</locale_2052>
+          <locale_1028>已命名視圖</locale_1028>
+          <locale_1049>Именованные виды</locale_1049>
+        </name>
+        <panel guid="77d33034-194d-4cd5-957c-730d9a9eac50" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Named Views" />
+        <panel guid="7df2a957-f12d-42ea-9fa6-95d7920c1b76" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Environments" />
+        <panel guid="987b1930-ecde-4e62-8282-97ab4ad325fe" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Ground Plane" />
+        <panel guid="1012681e-d276-49d3-9cd9-7de92dc2404a" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Sun" />
+        <panel guid="8df2a957-f12d-42ea-9fa6-95d7920c1b76" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Textures" />
+        <panel guid="f4424a46-8281-430a-b03d-911dc9b40294" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Snapshots" />
+        <panel guid="86777b3d-3d68-4965-84f8-9e019c402433" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Lights" />
+        <panel guid="b70a4973-99ca-40c0-b2b2-f03417a5ff1d" plug_in="638a0098-0511-482b-95bf-8cf47fd32c17" name="Render Libraries" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="a3439fb9-29f1-457c-915a-9e67a9876ecb">
+      <placement dock_location="Floating" float_point="119,113" float_size="200,200" />
+      <tabs name="GESTALTUNG" selected_item="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" display_style="BitmapAndText">
+        <name>
+          <locale_1033>GESTALTUNG</locale_1033>
+        </name>
+        <panel guid="4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829" plug_in="814d908a-e25c-493d-97e9-ee3861957f49" name="GESTALTUNG" />
+      </tabs>
+    </dock_bar>
+    <dock_bar guid="a4206be9-c9bf-4cbc-a80d-00369bbb5392" source_group_file="c7da84fc-2991-4824-832a-4f2509bd0ede" source_group="c8064867-a611-4b55-b747-fc2aee5d9bf3">
+      <placement dock_location="Floating" recent_dock_location="Top" float_point="-1431655808,0" float_size="276,258" />
+      <tabs name="Surface Sidebar" selected_item="f6534c6e-b451-4c7a-b8ec-8c3ff3596913" display_style="BitmapAndText">
+        <name>
+          <locale_1033>Surface Sidebar</locale_1033>
+          <locale_1029>Postranní panel Plocha</locale_1029>
+          <locale_1031>Flächen-Seitenleiste</locale_1031>
+          <locale_1034>Superficies (lateral)</locale_1034>
+          <locale_1036>Volet Surface</locale_1036>
+          <locale_1040>Barra laterale Superfici</locale_1040>
+          <locale_1041>サーフェスサイドバー</locale_1041>
+          <locale_1042>서피스 사이드바</locale_1042>
+          <locale_1045>Powierzchnia - pasek boczny</locale_1045>
+          <locale_2070>Superfícies</locale_2070>
+          <locale_2052>曲面边栏</locale_2052>
+          <locale_1028>曲面邊欄</locale_1028>
+          <locale_1049>Поверхности - боковая</locale_1049>
+        </name>
+        <tool_bar guid="f6534c6e-b451-4c7a-b8ec-8c3ff3596913" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
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+        <name>
+          <locale_1033>Command History</locale_1033>
+          <locale_1042>명령 히스토리</locale_1042>
+          <locale_1041>コマンドヒストリ</locale_1041>
+          <locale_1049>История команд</locale_1049>
+          <locale_1031>Befehlsverlauf</locale_1031>
+          <locale_2052>指令历史</locale_2052>
+          <locale_1034>Historial de comandos</locale_1034>
+          <locale_1036>Historique des commandes</locale_1036>
+          <locale_1028>指令歷史</locale_1028>
+          <locale_1045>Historia poleceń</locale_1045>
+          <locale_1040>Storico comandi</locale_1040>
+          <locale_1029>Historie příkazů</locale_1029>
+          <locale_2070>Histórico de Comandos</locale_2070>
+        </name>
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+        <name>
+          <locale_1033>Rectangle</locale_1033>
+        </name>
+        <tool_bar guid="31f7922f-85ce-4387-b923-c08dde67ccca" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
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+        <name>
+          <locale_1033>Help</locale_1033>
+          <locale_1042>도움말</locale_1042>
+          <locale_1041>ヘルプ</locale_1041>
+          <locale_1049>Справка</locale_1049>
+          <locale_1031>Hilfe</locale_1031>
+          <locale_2052>说明</locale_2052>
+          <locale_1034>Ayuda</locale_1034>
+          <locale_1036>Aide</locale_1036>
+          <locale_1028>說明</locale_1028>
+          <locale_1045>Pomoc</locale_1045>
+          <locale_1040>Aiuti</locale_1040>
+          <locale_1029>Nápověda</locale_1029>
+          <locale_2070>Ajuda</locale_2070>
+        </name>
+        <tool_bar guid="2337f242-b576-41a4-aace-4a74772bc72e" file="c7da84fc-2991-4824-832a-4f2509bd0ede" />
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+        <name>
+          <locale_1033>WERKZEUGE</locale_1033>
+        </name>
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+        <name>
+          <locale_1033>Main</locale_1033>
+          <locale_1029>Hlavní</locale_1029>
+          <locale_1031>Haupt</locale_1031>
+          <locale_1034>Principal</locale_1034>
+          <locale_1036>Principale</locale_1036>
+          <locale_1040>Principale</locale_1040>
+          <locale_1041>メイン</locale_1041>
+          <locale_1042>메인</locale_1042>
+          <locale_1045>Główne</locale_1045>
+          <locale_2070>Principal</locale_2070>
+          <locale_2052>主要</locale_2052>
+          <locale_1028>主要</locale_1028>
+          <locale_1049>Главная</locale_1049>
+        </name>
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+          <locale_1033>OSnap</locale_1033>
+          <locale_1029>Uchop</locale_1029>
+          <locale_1031>Ofang</locale_1031>
+          <locale_1034>RefObj</locale_1034>
+          <locale_1036>Accrochages</locale_1036>
+          <locale_1040>Osnap</locale_1040>
+          <locale_1041>OSnap</locale_1041>
+          <locale_1042>개체스냅</locale_1042>
+          <locale_1045>UchwytOb</locale_1045>
+          <locale_2070>OSnap</locale_2070>
+          <locale_2052>物件锁点</locale_2052>
+          <locale_1028>物件鎖點</locale_1028>
+          <locale_1049>Привязка</locale_1049>
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+        <name>
+          <locale_1033>Mesh Sidebar</locale_1033>
+          <locale_1029>Postranní panel Síť</locale_1029>
+          <locale_1031>Polygonnetz-Seitenleiste</locale_1031>
+          <locale_1034>Malla (lateral)</locale_1034>
+          <locale_1036>Volet Maillage</locale_1036>
+          <locale_1040>Barra laterale Mesh</locale_1040>
+          <locale_1041>メッシュサイドバー</locale_1041>
+          <locale_1042>메쉬 사이드바</locale_1042>
+          <locale_1045>Siatka - pasek boczny</locale_1045>
+          <locale_2070>Barra lateral de Malha</locale_2070>
+          <locale_2052>网格边栏</locale_2052>
+          <locale_1028>網格邊欄</locale_1028>
+          <locale_1049>Сети - боковая</locale_1049>
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+          <icons>
+            <icon guid="5be65a35-9b58-453a-b24d-e77f53543852" modified="True">
+              <light_svg>&lt;svg height="48" viewBox="0 0 48 48" width="48" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"&gt;&lt;clipPath id="a"&gt;&lt;path clip-rule="evenodd" d="m0 0h36v36h-36z"/&gt;&lt;/clipPath&gt;&lt;g clip-path="url(#a)" fill-opacity=".996078" transform="matrix(1.3333333 0 0 -1.3333333 0 48)"&gt;&lt;path d="m14.297 18.846c0 1.657 1.345 3.002 3.002 3.002s3.002-1.345 3.002-3.002-1.345-3.002-3.002-3.002-3.002 1.345-3.002 3.002z" fill="#fff" fill-rule="evenodd"/&gt;&lt;path d="m13.552 18.846c0 2.068 1.678 3.746 3.747 3.746 2.068 0 3.746-1.678 3.746-3.746 0-2.069-1.678-3.747-3.746-3.747-2.069 0-3.747 1.678-3.747 3.747zm6.004 0c0 1.245-1.012 2.257-2.257 2.257-1.246 0-2.258-1.012-2.258-2.257 0-1.246 1.012-2.258 2.258-2.258 1.245 0 2.257 1.012 2.257 2.258z"/&gt;&lt;/g&gt;&lt;/svg&gt;</light_svg>
+              <dark_svg>&lt;svg height="48" viewBox="0 0 48 48" width="48" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"&gt;
+  &lt;g clip-path="url(#a)" fill-opacity=".996078" transform="matrix(1.3333333 0 0 -1.3333333 0 48)"&gt;
+    &lt;path d="m14.297 18.846c0 1.657 1.345 3.002 3.002 3.002s3.002-1.345 3.002-3.002-1.345-3.002-3.002-3.002-3.002 1.345-3.002 3.002z" fill="#fff" fill-rule="evenodd" stroke-width="3.5px" x_rma_id="1" stroke="#666" stroke-linejoin="round" /&gt;
+    &lt;path d="m13.552 18.846c0 2.068 1.678 3.746 3.747 3.746 2.068 0 3.746-1.678 3.746-3.746 0-2.069-1.678-3.747-3.746-3.747-2.069 0-3.747 1.678-3.747 3.747zm6.004 0c0 1.245-1.012 2.257-2.257 2.257-1.246 0-2.258-1.012-2.258-2.257 0-1.246 1.012-2.258 2.258-2.258 1.245 0 2.257 1.012 2.257 2.258z" fill="" stroke-width="3.5px" x_rma_id="2" stroke="#666" stroke-linejoin="round" /&gt;
+  &lt;/g&gt;
+  &lt;clipPath id="a"&gt;
+    &lt;path clip-rule="evenodd" d="m0 0h36v36h-36z" fill="" stroke-width="" x_rma_id="0" /&gt;
+  &lt;/clipPath&gt;
+  &lt;g clip-path="url(#a)" fill-opacity=".996078" transform="matrix(1.3333333 0 0 -1.3333333 0 48)"&gt;
+    &lt;path d="m14.297 18.846c0 1.657 1.345 3.002 3.002 3.002s3.002-1.345 3.002-3.002-1.345-3.002-3.002-3.002-3.002 1.345-3.002 3.002z" fill="#fff" fill-rule="evenodd" stroke-width="" x_rma_id="1" /&gt;
+    &lt;path d="m13.552 18.846c0 2.068 1.678 3.746 3.747 3.746 2.068 0 3.746-1.678 3.746-3.746 0-2.069-1.678-3.747-3.746-3.747-2.069 0-3.747 1.678-3.747 3.747zm6.004 0c0 1.245-1.012 2.257-2.257 2.257-1.246 0-2.258-1.012-2.258-2.257 0-1.246 1.012-2.258 2.258-2.258 1.245 0 2.257 1.012 2.257 2.258z" fill="" stroke-width="" x_rma_id="2" /&gt;
+  &lt;/g&gt;
+&lt;/svg&gt;</dark_svg>
+            </icon>
+          </icons>
+          <macros>
+            <macro guid="02a1a1f5-4edb-459c-8bec-70fa3afbf7c0" source_guid="be8dcb66-2e68-49c9-8994-13c16119e652" modified="True" bitmap_guid="5be65a35-9b58-453a-b24d-e77f53543852">
+              <text>
+                <locale_1033>Single point 01</locale_1033>
+              </text>
+              <button_text>Single point</button_text>
+              <menu_text>Single point</menu_text>
+              <help_text>Single point</help_text>
+              <tooltip>Line</tooltip>
+              <script>! _Point</script>
+            </macro>
+          </macros>
+        </RhinoUI>
+      </modifications>
+    </rui_file>
+  </referenced_rui_files>
+</RhinoUI>
\ No newline at end of file
diff --git a/rhino/INSTALL.md b/rhino/INSTALL.md
new file mode 100644
index 0000000..51975a2
--- /dev/null
+++ b/rhino/INSTALL.md
@@ -0,0 +1,98 @@
+# RhinoPanel — Installation Rhino 8 (Mac)
+
+## Voraussetzungen
+- Rhino 8
+- Node.js (nur fuer Dev-Modus)
+
+---
+
+## Dev-Modus
+
+```bash
+cd rhino-panel
+npm run dev       # startet auf http://localhost:5173
+```
+
+In Rhino: `_RunPythonScript` → `rhino/rhinopanel.py`
+
+## Prod-Modus
+
+```bash
+npm run build     # erstellt dist/
+```
+
+In Rhino: `_RunPythonScript` → `rhinopanel.py`  
+Das Script erkennt `dist/index.html` automatisch.
+
+## Autostart
+
+Rhino Optionen → Scripting → Startup Scripts → `rhinopanel.py` hinzufuegen
+
+---
+
+## Grasshopper-Anbindung
+
+### Wie es funktioniert
+
+Wenn "Anwenden" im Panel gedrueckt wird:
+1. Rhino-Layer werden erstellt/aktualisiert
+2. Ebenen-JSON wird in `doc.Strings["rhinopanel_ebenen"]` gespeichert
+3. Grasshopper-Neuberechnung wird automatisch ausgeloest
+
+### GH Python-Component einrichten
+
+1. GH oeffnen → `Params > Util > Python Script` Komponente platzieren
+2. Inhalt von `rhino/gh_ebenen.py` hineinkopieren
+3. Outputs der Komponente (Rechtsklick → "Manage Outputs") anlegen:
+
+| Output | Typ | Inhalt |
+|--------|-----|--------|
+| `namen` | list | Grundriss-Namen (EG, 1OG, ...) |
+| `okff` | list | Bodenniveau je Geschoss in m |
+| `hoehen` | list | Geschosshoehe in m |
+| `schnitthoehen` | list | Schnitthoehe ueber Boden in m |
+| `grundriss_ebenen` | list | Planes auf Schnitthoehe (fuer Section) |
+| `boden_ebenen` | list | Planes auf OKFF (fuer Extrusion) |
+| `gebaeude_hoehe` | item | Gesamthoehe in m |
+| `schnitte` | list | Namen der Schnitt-Ebenen |
+| `ansichten` | list | Namen der Ansichts-Ebenen |
+
+### Typische GH-Verknuepfungen
+
+**Automatischer Grundrissschnitt:**
+```
+gh_ebenen.grundriss_ebenen → Brep Split / Section
+```
+
+**Wandextrusion (2D → 3D):**
+```
+Curves auf Layer 01_WAND
+  → Extrude (Vektor: {0,0,hoehe})
+  → Cap Holes
+  → BooleanUnion
+```
+
+**Stockwerke positionieren:**
+```
+gh_ebenen.boden_ebenen → Orient
+```
+
+### Alternativ: Get Document String (ohne Python)
+
+- `Params > Util > Get Document String`
+- Key: `rhinopanel_ebenen`
+- Output → `Deserialize JSON` oder `Evaluate Expression`
+
+---
+
+## Dateistruktur
+
+```
+rhino-panel/
+├── src/                  React-App (Quellcode)
+├── dist/                 Gebaute App (nach npm run build)
+└── rhino/
+    ├── rhinopanel.py     Panel starten (in Rhino ausfuehren)
+    ├── layer_builder.py  Layer-Erstellung
+    └── gh_ebenen.py      GH Python-Component Code
+```
diff --git a/rhino/ausschnitte.py b/rhino/ausschnitte.py
new file mode 100644
index 0000000..636f5dc
--- /dev/null
+++ b/rhino/ausschnitte.py
@@ -0,0 +1,708 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+ausschnitte.py
+AUSSCHNITTE-Panel: speichert Viewport-Ausschnitte mit Kamera, Display-Mode,
+Layer-Sichtbarkeit, DOSSIER-State. Anwendbar im Model-Space und auf Layout-Details.
+"""
+import os
+import sys
+import math
+import json
+import uuid
+import Rhino
+import System
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "5c9e4f3f-6d0e-4f1f-b3c4-d5e6f7081a2b"
+_STORE_KEY     = "dossier_ausschnitte"
+_FOLDERS_KEY   = "dossier_ausschnitt_folders"
+_PRESETS_KEY   = "dossier_layer_presets"
+
+
+def _orientation_from_camera(loc, tgt, parallel=True):
+    """Bestimmt Orientierung:
+    - perspective = perspektivische Projektion (kein orthogonaler Schnitt)
+    - horizontal  = parallele Projektion mit Blick weitgehend nach unten/oben (Grundriss)
+    - vertical    = parallele Projektion mit Blick weitgehend seitlich (Schnitt/Ansicht)
+    """
+    if not parallel:
+        return "perspective"
+    try:
+        dx = tgt[0] - loc[0]
+        dy = tgt[1] - loc[1]
+        dz = tgt[2] - loc[2]
+        m  = math.sqrt(dx * dx + dy * dy + dz * dz)
+        if m <= 0: return "vertical"
+        return "horizontal" if (abs(dz) / m) > 0.7 else "vertical"
+    except Exception:
+        return "vertical"
+
+
+def _parse_scale(scale_str):
+    """Parse '1:50' / '1=50' / '50' → (page, model). Gibt None zurueck wenn nicht parsebar."""
+    if not scale_str:
+        return None
+    s = scale_str.strip()
+    for sep in (":", "=", "/"):
+        if sep in s:
+            try:
+                a, b = s.split(sep, 1)
+                pa = float(a.strip())
+                pb = float(b.strip())
+                if pa > 0 and pb > 0:
+                    return (pa, pb)
+            except Exception:
+                pass
+            break
+    # nur Zahl: 1:N angenommen
+    try:
+        n = float(s)
+        if n > 0:
+            return (1.0, n)
+    except Exception:
+        pass
+    return None
+
+
+# --- Capture / Apply Helpers ------------------------------------------------
+
+def _capture_camera(vp):
+    dm    = vp.DisplayMode
+    dm_id = str(dm.Id) if dm else None
+    dm_nm = dm.LocalName if dm else None
+    loc   = [vp.CameraLocation.X, vp.CameraLocation.Y, vp.CameraLocation.Z]
+    tgt   = [vp.CameraTarget.X,   vp.CameraTarget.Y,   vp.CameraTarget.Z]
+    # Frustum-Breite mitsichern: bei Parallelprojektion bestimmt sie den Zoom.
+    # Ohne sie laesst sich der gespeicherte Ausschnitt nicht rekonstruieren.
+    frustum_w = None
+    frustum_h = None
+    try:
+        ok, l, r, b, t, n, f = vp.GetFrustum()
+        if ok:
+            frustum_w = float(r - l)
+            frustum_h = float(t - b)
+    except Exception:
+        pass
+    return {
+        "viewName":        vp.Name,
+        "location":        loc,
+        "target":          tgt,
+        "up":              [vp.CameraUp.X,       vp.CameraUp.Y,       vp.CameraUp.Z],
+        "lens":            float(vp.Camera35mmLensLength) if vp.Camera35mmLensLength else 50.0,
+        "parallel":        bool(vp.IsParallelProjection),
+        "displayMode":     dm_id,
+        "displayModeName": dm_nm,
+        "orientation":     _orientation_from_camera(loc, tgt, bool(vp.IsParallelProjection)),
+        "frustumWidth":    frustum_w,
+        "frustumHeight":   frustum_h,
+    }
+
+
+def _apply_camera(vp, cam):
+    if not cam: return
+    try:
+        loc = Rhino.Geometry.Point3d(*cam["location"])
+        tgt = Rhino.Geometry.Point3d(*cam["target"])
+        up  = Rhino.Geometry.Vector3d(*cam["up"]) if cam.get("up") else None
+        if cam.get("parallel"):
+            vp.ChangeToParallelProjection(True)
+        else:
+            vp.ChangeToPerspectiveProjection(True, float(cam.get("lens", 50)))
+        vp.SetCameraLocations(tgt, loc)
+        if up:
+            try: vp.CameraUp = up
+            except Exception: pass
+        dm_id = cam.get("displayMode")
+        if dm_id:
+            try:
+                mode = Rhino.Display.DisplayModeDescription.GetDisplayMode(System.Guid(dm_id))
+                if mode is not None: vp.DisplayMode = mode
+            except Exception:
+                pass
+        # Zoom (Frustum-Breite) rekonstruieren — nur bei Parallelprojektion sinnvoll.
+        # Bei Perspective bestimmt die Lens-Length den Bildausschnitt, dort
+        # waere ein Magnify kontraproduktiv.
+        fw = cam.get("frustumWidth")
+        if fw and fw > 0 and cam.get("parallel"):
+            try:
+                ok, l, r, b, t, n, f = vp.GetFrustum()
+                if ok:
+                    cur_w = float(r - l)
+                    if cur_w > 0:
+                        factor = cur_w / float(fw)
+                        if 1e-9 < factor < 1e9:
+                            try:
+                                vp.Magnify(float(factor), False)
+                            except Exception:
+                                try:
+                                    vp.Magnify(float(factor))
+                                except Exception:
+                                    Rhino.RhinoApp.RunScript(
+                                        "_-Zoom _Factor {:.6f} _Enter".format(factor), False)
+            except Exception as ex:
+                print("[AUSSCHNITTE] Frustum-Apply:", ex)
+    except Exception as ex:
+        print("[AUSSCHNITTE] Camera-Apply:", ex)
+
+
+def _capture_layers(doc):
+    out = []
+    for layer in doc.Layers:
+        if layer.IsDeleted: continue
+        out.append({
+            "id":      str(layer.Id),
+            "visible": bool(layer.IsVisible),
+            "locked":  bool(layer.IsLocked),
+        })
+    return out
+
+
+def _apply_layers_global(doc, layers):
+    by_id = {}
+    for layer in doc.Layers:
+        if not layer.IsDeleted:
+            by_id[str(layer.Id)] = layer
+    for ls in layers:
+        layer = by_id.get(ls.get("id"))
+        if layer is None: continue
+        if layer.IsVisible != ls.get("visible", True):
+            layer.IsVisible = ls.get("visible", True)
+        if layer.IsLocked != ls.get("locked", False):
+            layer.IsLocked = ls.get("locked", False)
+
+
+def _apply_layers_per_viewport(doc, layers, vp_id):
+    """Setzt Sichtbarkeit pro Viewport (fuer Layout-Details)."""
+    by_id = {}
+    for layer in doc.Layers:
+        if not layer.IsDeleted:
+            by_id[str(layer.Id)] = layer
+    for ls in layers:
+        layer = by_id.get(ls.get("id"))
+        if layer is None: continue
+        try:
+            layer.SetPerViewportVisible(vp_id, ls.get("visible", True))
+        except Exception:
+            pass
+
+
+_DOSSIER_KEYS = (
+    "dossier_zeichnungsebenen",
+    "dossier_ebenen",
+    "dossier_active_id",
+    "dossier_active_code",
+)
+
+
+def _capture_dossier_state(doc):
+    out = {}
+    for k in _DOSSIER_KEYS:
+        v = doc.Strings.GetValue(k)
+        if v is not None:
+            out[k] = v
+    return out
+
+
+def _apply_dossier_state(doc, state):
+    for k, v in (state or {}).items():
+        if v is not None:
+            doc.Strings.SetString(k, v)
+
+
+def _find_selected_detail(doc):
+    """Sucht nach einem aktuell selektierten Detail-Viewport-Objekt."""
+    for obj in doc.Objects.GetSelectedObjects(False, False):
+        if isinstance(obj, Rhino.DocObjects.DetailViewObject):
+            return obj
+    return None
+
+
+def _load_snapshots(doc):
+    """Modul-interne Snapshot-Liste (cross-modul nutzbar)."""
+    raw = doc.Strings.GetValue(_STORE_KEY)
+    if not raw: return []
+    try:
+        data = json.loads(raw)
+        return data if isinstance(data, list) else []
+    except Exception:
+        return []
+
+
+def apply_snapshot_to_detail(doc, detail, snap_id):
+    """Wendet einen Ausschnitt auf ein konkretes Detail-Object an. Wird vom
+    Layouts-Modul benutzt, um Ausschnitt-Detail-Bindings zu synchronisieren.
+    Liefert True bei Erfolg."""
+    snap = next((s for s in _load_snapshots(doc) if s.get("id") == snap_id), None)
+    if not snap:
+        print("[AUSSCHNITTE] apply_to_detail: snap nicht gefunden", snap_id)
+        return False
+    # Page-View ermitteln (fuer SetActiveDetail/SetPageAsActive)
+    page_view = None
+    try:
+        for view in doc.Views:
+            if isinstance(view, Rhino.Display.RhinoPageView):
+                try:
+                    if any(d.Id == detail.Id for d in view.GetDetailViews()):
+                        page_view = view
+                        break
+                except Exception:
+                    continue
+    except Exception as ex:
+        print("[AUSSCHNITTE] page-view-suche:", ex)
+    # Detail muss aktiv sein, damit Kamera-Aenderungen anschlagen
+    was_active = False
+    try: was_active = detail.IsActive
+    except Exception: pass
+    if page_view is not None and not was_active:
+        try: page_view.SetActiveDetail(detail.Id)
+        except Exception as ex: print("[AUSSCHNITTE] SetActiveDetail:", ex)
+    # Kamera + Layer + Name
+    vp = detail.Viewport
+    _apply_camera(vp, snap.get("camera"))
+    _apply_layers_per_viewport(doc, snap.get("layers", []), vp.Id)
+    try:
+        new_name = snap.get("name")
+        if new_name and vp.Name != new_name:
+            vp.Name = new_name
+    except Exception as ex:
+        print("[AUSSCHNITTE] Detail-Rename:", ex)
+    # Massstab
+    ratio = _parse_scale(snap.get("scale", ""))
+    if ratio is not None:
+        page_v, model_v = ratio
+        for label, setter in (
+            ("DetailGeometry.SetScale", lambda: detail.DetailGeometry.SetScale(model_v, page_v)),
+            ("Detail.SetScale",         lambda: detail.SetScale(model_v, page_v)),
+        ):
+            try:
+                setter()
+                break
+            except Exception:
+                continue
+    # Commit + Deaktivieren
+    try: detail.CommitViewportChanges()
+    except Exception:
+        try: detail.CommitChanges()
+        except Exception: pass
+    if page_view is not None and not was_active:
+        try: page_view.SetPageAsActive()
+        except Exception: pass
+    try:
+        (page_view or doc.Views).Redraw()
+    except Exception:
+        doc.Views.Redraw()
+    print("[AUSSCHNITTE] '{}' auf Detail {} angewendet".format(snap.get("name"), detail.Id))
+    return True
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class AusschnittBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "ausschnitte")
+
+    def _on_ready(self):
+        self._send_list()
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+
+        if t == "READY":            self._on_ready()
+        elif t == "LIST":           self._send_list()
+        elif t == "SAVE":           self._save(p.get("name", "Ausschnitt"))
+        elif t == "UPDATE":         self._update(p.get("id"))
+        elif t == "RESTORE":        self._restore(p.get("id"))
+        elif t == "APPLY_TO_DETAIL":self._apply_to_detail(p.get("id"))
+        elif t == "RENAME":         self._rename(p.get("id"), p.get("name"))
+        elif t == "DELETE":         self._delete(p.get("id"))
+        elif t == "SET_FOLDER":     self._set_field(p.get("id"), "folder", p.get("folder") or "")
+        elif t == "SET_SCALE":      self._set_field(p.get("id"), "scale",  p.get("scale")  or "")
+        elif t == "DUPLICATE":      self._duplicate(p.get("id"))
+        elif t == "ADD_FOLDER":     self._add_folder(p.get("name"))
+        elif t == "REMOVE_FOLDER":  self._remove_folder(p.get("name"))
+        elif t == "GET_LAYERS":     self._send_layers(p.get("id"))
+        elif t == "UPDATE_LAYERS":  self._update_layers(p.get("id"), p.get("layers") or [])
+        elif t == "SAVE_PRESET":    self._save_preset(p.get("name"), p.get("layers") or [])
+        elif t == "DELETE_PRESET":  self._delete_preset(p.get("name"))
+
+    def _load(self, doc):
+        raw = doc.Strings.GetValue(_STORE_KEY)
+        if not raw: return []
+        try:
+            data = json.loads(raw)
+            return data if isinstance(data, list) else []
+        except Exception:
+            return []
+
+    def _store(self, doc, snaps):
+        doc.Strings.SetString(_STORE_KEY, json.dumps(snaps, ensure_ascii=False))
+
+    def _load_folders(self, doc):
+        raw = doc.Strings.GetValue(_FOLDERS_KEY)
+        if not raw: return []
+        try:
+            data = json.loads(raw)
+            return data if isinstance(data, list) else []
+        except Exception:
+            return []
+
+    def _store_folders(self, doc, folders):
+        doc.Strings.SetString(_FOLDERS_KEY, json.dumps(folders, ensure_ascii=False))
+
+    def _load_presets(self, doc):
+        raw = doc.Strings.GetValue(_PRESETS_KEY)
+        if not raw: return []
+        try:
+            data = json.loads(raw)
+            return data if isinstance(data, list) else []
+        except Exception:
+            return []
+
+    def _store_presets(self, doc, presets):
+        doc.Strings.SetString(_PRESETS_KEY, json.dumps(presets, ensure_ascii=False))
+
+    def _send_list(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = self._load(doc)
+        explicit_folders = self._load_folders(doc)
+        # Aus Snapshots zusaetzliche Ordner ableiten (falls Snap auf nicht-existenten Ordner zeigt)
+        for s in snaps:
+            f = s.get("folder", "")
+            if f and f not in explicit_folders:
+                explicit_folders.append(f)
+        slim = []
+        for s in snaps:
+            cam = s.get("camera", {}) or {}
+            orient = cam.get("orientation")
+            if not orient:
+                loc = cam.get("location") or [0, 0, 0]
+                tgt = cam.get("target")   or [0, 0, 0]
+                orient = _orientation_from_camera(loc, tgt, bool(cam.get("parallel", True)))
+            slim.append({
+                "id":              s.get("id"),
+                "name":            s.get("name"),
+                "folder":          s.get("folder", ""),
+                "scale":           s.get("scale", ""),
+                "orientation":     orient,
+                "displayModeName": cam.get("displayModeName"),
+                "parallel":        cam.get("parallel", False),
+            })
+        preset_summary = [{"name": p.get("name"), "count": len(p.get("layers") or [])}
+                          for p in self._load_presets(doc)]
+        self.send("LIST", {
+            "snapshots": slim,
+            "folders":   explicit_folders,
+            "presets":   preset_summary,
+        })
+
+    def _add_folder(self, name):
+        if not name: return
+        name = name.strip()
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        folders = self._load_folders(doc)
+        if name not in folders:
+            folders.append(name)
+            self._store_folders(doc, folders)
+        self._send_list()
+
+    def _remove_folder(self, name):
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        # Aus Folder-Liste entfernen
+        folders = [f for f in self._load_folders(doc) if f != name]
+        self._store_folders(doc, folders)
+        # Snapshots aus diesem Ordner herausnehmen (auf root)
+        snaps = self._load(doc)
+        for s in snaps:
+            if s.get("folder") == name:
+                s["folder"] = ""
+        self._store(doc, snaps)
+        self._send_list()
+
+    def _duplicate(self, snap_id):
+        if not snap_id: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = self._load(doc)
+        src = next((s for s in snaps if s.get("id") == snap_id), None)
+        if not src: return
+        # Tiefe Kopie via JSON
+        copy = json.loads(json.dumps(src, ensure_ascii=False))
+        copy["id"]   = "snap_" + uuid.uuid4().hex[:8]
+        copy["name"] = (src.get("name", "Ausschnitt") + " Kopie")
+        # Direkt nach Original einfuegen
+        idx = snaps.index(src)
+        snaps.insert(idx + 1, copy)
+        self._store(doc, snaps)
+        self._send_list()
+        print("[AUSSCHNITTE] '{}' dupliziert".format(src.get("name")))
+
+    def _set_field(self, snap_id, field, value):
+        if not snap_id: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = self._load(doc)
+        for s in snaps:
+            if s.get("id") == snap_id:
+                s[field] = value
+                break
+        self._store(doc, snaps)
+        self._send_list()
+
+    def _capture(self, doc, name, existing_id=None, prior_scale=""):
+        view = doc.Views.ActiveView
+        if view is None:
+            print("[AUSSCHNITTE] Keine aktive View")
+            return None
+        vp = view.ActiveViewport
+        # Aktuelle Skala vom MASSSTAB-Modul holen — nur sinnvoll bei Parallel-
+        # projektion. In Perspective bleibt scale leer (Fallback: prior_scale).
+        scale_str = ""
+        try:
+            import massstab
+            # Bewusst der EINGESTELLTE Wert (User-Intent), nicht der live aus
+            # dem Viewport berechnete. Letzterer drifted bei Pan/Zoom.
+            ratio = massstab.get_applied_scale_ratio()
+            if ratio is not None and ratio > 0:
+                if ratio >= 10:
+                    scale_str = "1:{:.0f}".format(ratio)
+                else:
+                    scale_str = "1:{:.1f}".format(ratio)
+        except Exception as ex:
+            print("[AUSSCHNITTE] Live-Skala lesen:", ex)
+        # Fallback: wenn kein Massstab gepinnt war, die aus dem Frustum
+        # berechnete Live-Skala speichern. So bleibt das Massstab-Dropdown
+        # nach Restore konsistent (auch wenn der eigentliche Zoom-Restore
+        # bereits ueber frustumWidth in _apply_camera laeuft).
+        if not scale_str:
+            try:
+                import massstab
+                live = massstab.get_current_scale_ratio()
+                if live is not None and live > 0:
+                    scale_str = "1:{:.0f}".format(live) if live >= 10 else "1:{:.1f}".format(live)
+            except Exception as ex:
+                print("[AUSSCHNITTE] Live-Skala (Fallback):", ex)
+        if not scale_str and prior_scale:
+            scale_str = prior_scale  # Perspective -> alten Wert nicht ueberschreiben
+        return {
+            "id":     existing_id or "snap_" + uuid.uuid4().hex[:8],
+            "name":   name,
+            "scale":  scale_str,
+            "camera": _capture_camera(vp),
+            "layers": _capture_layers(doc),
+            "dossier": _capture_dossier_state(doc),
+        }
+
+    def _save(self, name):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snap = self._capture(doc, name)
+        if snap is None: return
+        snaps = self._load(doc)
+        snaps.append(snap)
+        self._store(doc, snaps)
+        self._send_list()
+        print("[AUSSCHNITTE] '{}' gespeichert".format(name))
+
+    def _update(self, snap_id):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = self._load(doc)
+        target = next((s for s in snaps if s.get("id") == snap_id), None)
+        if not target: return
+        updated = self._capture(doc, target.get("name", "Ausschnitt"),
+                                existing_id=snap_id,
+                                prior_scale=target.get("scale", ""))
+        if updated is None: return
+        for i, s in enumerate(snaps):
+            if s.get("id") == snap_id:
+                snaps[i] = updated
+                break
+        self._store(doc, snaps)
+        self._send_list()
+        print("[AUSSCHNITTE] '{}' aktualisiert".format(target.get("name")))
+
+    def _restore(self, snap_id):
+        doc  = Rhino.RhinoDoc.ActiveDoc
+        snap = next((s for s in self._load(doc) if s.get("id") == snap_id), None)
+        if not snap: return
+        view = doc.Views.ActiveView
+        if view is None: return
+        vp = view.ActiveViewport
+        _apply_camera(vp, snap.get("camera"))
+        _apply_layers_global(doc, snap.get("layers", []))
+        _apply_dossier_state(doc, snap.get("dossier") or snap.get("pause") or {})
+        # Viewport ZUERST umbenennen — der per-Viewport-Massstab in massstab.py
+        # wird unter vp.Name geschluesselt. Erst nach dem Rename schreibt
+        # _apply_scale unter dem neuen Namen, sonst landet der Wert beim alten
+        # Ausschnitt und der neue zeigt "1:?".
+        try:
+            new_name = snap.get("name")
+            if new_name and vp.Name != new_name:
+                vp.Name = new_name
+        except Exception as ex:
+            print("[AUSSCHNITTE] Rename:", ex)
+        # Gespeicherten Massstab anwenden (z.B. "1:50") — falls vorhanden und
+        # Viewport parallel ist (in Perspective ignoriert massstab._apply_scale).
+        try:
+            scale_str = (snap.get("scale") or "").strip()
+            if scale_str:
+                ratio = _parse_scale(scale_str)
+                if ratio:
+                    _, model_v = ratio  # (page=1, model=N) -> N
+                    import massstab
+                    massstab._apply_scale(doc, vp, float(model_v))
+                    print("[AUSSCHNITTE] Massstab gesetzt auf 1:{} (applied={})".format(
+                        model_v, massstab.get_applied_scale_ratio()))
+                    # Andere Panels (Massstab, Oberleiste) sofort ueber den
+                    # neuen appliedScale informieren — sonst zeigt das Dropdown
+                    # noch den vorherigen Wert bis zum naechsten Idle-Tick mit
+                    # Aenderung an der Live-Skala.
+                    for key in ("massstab_bridge", "oberleiste_bridge"):
+                        try:
+                            b = sc.sticky.get(key)
+                            print("[AUSSCHNITTE] force-send via {}: {}".format(key, "OK" if b is not None else "MISSING"))
+                            if b is not None:
+                                b._send_state(force=True)
+                        except Exception as e:
+                            print("[AUSSCHNITTE] force-send {} failed: {}".format(key, e))
+        except Exception as ex:
+            print("[AUSSCHNITTE] Massstab-Restore:", ex)
+        view.Redraw()
+        print("[AUSSCHNITTE] '{}' wiederhergestellt".format(snap.get("name")))
+
+    def _apply_to_detail(self, snap_id):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        # 1) Detail aus Selektion oder aktiver PageView ermitteln
+        detail = _find_selected_detail(doc)
+        if detail is None:
+            try:
+                av = doc.Views.ActiveView
+                if isinstance(av, Rhino.Display.RhinoPageView):
+                    for d in av.GetDetailViews():
+                        if d.IsActive:
+                            detail = d
+                            break
+            except Exception as ex:
+                print("[AUSSCHNITTE] Active-Detail-Suche:", ex)
+        if detail is None:
+            print("[AUSSCHNITTE] Kein Detail ausgewaehlt — bitte:")
+            print("  1) ins Layout wechseln")
+            print("  2) Detail-Rahmen einmal anklicken (so dass er hervorgehoben ist)")
+            print("  3) erneut 'Auf Detail anwenden' waehlen")
+            return
+        # 2) Delegieren an den oeffentlichen Helper
+        apply_snapshot_to_detail(doc, detail, snap_id)
+
+    def _send_layers(self, snap_id):
+        if not snap_id: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snap = next((s for s in self._load(doc) if s.get("id") == snap_id), None)
+        if not snap:
+            print("[AUSSCHNITTE] Snap nicht gefunden:", snap_id)
+            return
+        snap_by_id = {}
+        for ls in (snap.get("layers") or []):
+            snap_by_id[ls.get("id")] = ls
+
+        layers = []
+        for layer in doc.Layers:
+            if layer.IsDeleted: continue
+            lid = str(layer.Id)
+            ls  = snap_by_id.get(lid, {})
+            layers.append({
+                "id":       lid,
+                "name":     layer.Name,
+                "fullPath": layer.FullPath,
+                "color":    "#%02x%02x%02x" % (layer.Color.R, layer.Color.G, layer.Color.B),
+                "visible":  bool(ls.get("visible", layer.IsVisible)),
+                "locked":   bool(ls.get("locked", layer.IsLocked)),
+            })
+        layers.sort(key=lambda x: x["fullPath"])
+        presets = self._load_presets(doc)
+        self.send("LAYERS_DATA", {
+            "id":      snap_id,
+            "name":    snap.get("name"),
+            "layers":  layers,
+            "presets": presets,
+        })
+
+    def _update_layers(self, snap_id, layers):
+        if not snap_id: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = self._load(doc)
+        target = next((s for s in snaps if s.get("id") == snap_id), None)
+        if not target: return
+        new_list = []
+        for ls in layers:
+            lid = ls.get("id")
+            if not lid: continue
+            new_list.append({
+                "id":      lid,
+                "visible": bool(ls.get("visible", True)),
+                "locked":  bool(ls.get("locked", False)),
+            })
+        target["layers"] = new_list
+        self._store(doc, snaps)
+        self._send_list()
+        print("[AUSSCHNITTE] Ebenen-Sichtbarkeit von '{}' aktualisiert".format(target.get("name")))
+
+    def _save_preset(self, name, layers):
+        if not name: return
+        name = name.strip()
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        presets = self._load_presets(doc)
+        clean = []
+        for ls in layers:
+            lid = ls.get("id")
+            if not lid: continue
+            clean.append({
+                "id":      lid,
+                "visible": bool(ls.get("visible", True)),
+                "locked":  bool(ls.get("locked", False)),
+            })
+        existing = next((p for p in presets if p.get("name") == name), None)
+        if existing is not None:
+            existing["layers"] = clean
+        else:
+            presets.append({"name": name, "layers": clean})
+        self._store_presets(doc, presets)
+        self._send_list()
+        print("[AUSSCHNITTE] Ebenenkombination '{}' gespeichert ({} Ebenen)".format(name, len(clean)))
+
+    def _delete_preset(self, name):
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        presets = [p for p in self._load_presets(doc) if p.get("name") != name]
+        self._store_presets(doc, presets)
+        self._send_list()
+
+    def _rename(self, snap_id, name):
+        if not snap_id or not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = self._load(doc)
+        for s in snaps:
+            if s.get("id") == snap_id:
+                s["name"] = name
+                break
+        self._store(doc, snaps)
+        self._send_list()
+
+    def _delete(self, snap_id):
+        if not snap_id: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        snaps = [s for s in self._load(doc) if s.get("id") != snap_id]
+        self._store(doc, snaps)
+        self._send_list()
+
+
+panel_base.register_and_open("ausschnitte", "AUSSCHNITTE", PANEL_GUID_STR, AusschnittBridge,
+                             icon_spec=("A", "#c87050"))
diff --git a/rhino/clean.py b/rhino/clean.py
new file mode 100644
index 0000000..b7b1a22
--- /dev/null
+++ b/rhino/clean.py
@@ -0,0 +1,48 @@
+# ! python3
+"""
+clean.py
+Loescht ALLE sticky-Eintraege der DOSSIER-Panels, damit der naechste
+startup.py-Lauf die Bridges komplett neu erzeugt.
+
+WICHTIG: Zusaetzlich muessen die drei Panels in Rhinos Layout
+einmal geschlossen werden (Rechtsklick auf Tab -> Schliessen),
+damit Rhino den alten Panel-Inhalt nicht weiter verwendet.
+"""
+import scriptcontext as sc
+
+KEYS = [
+    # Alte Keys (rueckwaerts-kompatibel)
+    "rhinopanel_registered", "rhinopanel_form", "rhinopanel_guid",
+    # panel_base-System
+    "panel_registered_ebenen",     "panel_guid_ebenen",
+    "panel_registered_gestaltung", "panel_guid_gestaltung",
+    "panel_registered_ausschnitte","panel_guid_ausschnitte",
+    # EBENEN
+    "ebenen_layer_listener",
+    "ebenen_bridge_ref",
+    "ebenen_processing_layer",
+    "ebenen_processing",
+    # GESTALTUNG
+    "gestaltung_selection_listener",
+    "gestaltung_bridge",
+]
+
+removed = 0
+for k in KEYS:
+    if k in sc.sticky:
+        del sc.sticky[k]
+        removed += 1
+
+# Sicherheitshalber auch alle anderen panel_*/ebenen_*/gestaltung_*-Keys raus
+for k in list(sc.sticky.keys()):
+    if isinstance(k, str) and (
+        k.startswith("panel_") or k.startswith("ebenen_") or
+        k.startswith("gestaltung_") or k.startswith("ausschnitt")
+    ):
+        del sc.sticky[k]
+        removed += 1
+
+print("[clean] {} Sticky-Keys entfernt.".format(removed))
+print("[clean] Schliesse jetzt die EBENEN / GESTALTUNG / AUSSCHNITTE")
+print("[clean] Panels im Rhino-Layout (Rechtsklick Tab -> Schliessen),")
+print("[clean] dann startup.py neu ausfuehren.")
diff --git a/rhino/clean_layers.py b/rhino/clean_layers.py
new file mode 100644
index 0000000..2631e33
--- /dev/null
+++ b/rhino/clean_layers.py
@@ -0,0 +1,51 @@
+# ! python3
+"""
+clean_layers.py
+Loescht Rhino-Standardlayer (Default, Layer 01-05 usw.)
+die keine Objekte enthalten und nicht zum RhinoPanel gehoeren.
+Ausfuehren via _RunPythonScript.
+"""
+import re
+import Rhino
+import scriptcontext as sc
+
+sc.sticky["rhinopanel_registered"] = False
+sc.sticky["rhinopanel_form"] = None
+
+doc = Rhino.RhinoDoc.ActiveDoc
+
+PROTECTED = {
+    "10_grundrisse", "20_schnitte", "30_ansichten",
+    "00_raster", "01_vermessung", "40_situation",
+    "90_referenzen", "99_konstruktion",
+}
+
+pattern = re.compile(r'^(default|layer\s*0*\d+)$', re.IGNORECASE)
+
+gone = []
+skip = []
+
+for i in range(doc.Layers.Count - 1, -1, -1):
+    layer = doc.Layers[i]
+    root  = layer.FullPath.split("::")[0].strip().lower()
+    if root in PROTECTED:
+        continue
+    if not pattern.match(layer.Name.strip()):
+        continue
+    try:
+        if doc.Layers.Delete(i, True):
+            gone.append(layer.Name)
+        else:
+            skip.append(layer.Name)
+    except Exception:
+        skip.append(layer.Name)
+
+doc.Views.Redraw()
+
+if gone:
+    print("[clean_layers] Geloescht: {}".format(", ".join(gone)))
+else:
+    print("[clean_layers] Nichts geloescht (schon sauber?)")
+if skip:
+    print("[clean_layers] Uebersprungen (Objekte drauf): {}".format(", ".join(skip)))
+print("[clean_layers] Panel-Sticky zurueckgesetzt")
diff --git a/rhino/dimensionen.py b/rhino/dimensionen.py
new file mode 100644
index 0000000..9344f3f
--- /dev/null
+++ b/rhino/dimensionen.py
@@ -0,0 +1,612 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+dimensionen.py
+DIMENSIONEN-Panel: Object Info Palette nach Vectorworks-Vorbild.
+Zeigt Position + Abmessungen der Selektion an und erlaubt direktes Eintippen
+mit 9-Punkt-Referenz, World/CPlane-Modus und Shape-spezifischen Feldern
+(Kreis, Linie, Rechteck).
+"""
+import os
+import sys
+import math
+import Rhino
+import Rhino.Geometry as rg
+import System
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "9e3c8c5d-6d4a-4f3e-b3c5-d4e5f6071a2c"
+
+# Idle-Polling fuer geometrische Aenderungen (Gumball-Move feuert keine
+# SelectObjects-Events). Tick alle N Idle-Calls — N hoeher = weniger CPU.
+_IDLE_GEOM_POLL = 8
+
+
+# --- Geometrie-Helpers ------------------------------------------------------
+
+def _get_selected_objects(doc):
+    """Liste aller aktuell selektierten RhinoObjects."""
+    if doc is None: return []
+    try:
+        return list(doc.Objects.GetSelectedObjects(False, False))
+    except Exception:
+        return []
+
+
+def _get_cplane(doc):
+    """Aktive Construction Plane oder Plane.WorldXY als Fallback."""
+    try:
+        v = doc.Views.ActiveView
+        if v is not None:
+            cp = v.ActiveViewport.ConstructionPlane()
+            if cp is not None and cp.Plane.IsValid:
+                return cp.Plane
+    except Exception:
+        pass
+    return rg.Plane.WorldXY
+
+
+def _active_plane(doc, mode):
+    """Plane fuer die aktuelle Koordinatenangabe — World oder CPlane."""
+    if mode == "cplane":
+        return _get_cplane(doc)
+    return rg.Plane.WorldXY
+
+
+def _bbox_in_plane(objs, plane):
+    """BBox aller selektierten Objekte im Koordinatensystem der gegebenen
+    Plane (achsen-aligned zur Plane). Liefert (BoundingBox, plane) oder None."""
+    if not objs:
+        return None
+    # World -> Plane Transform anwenden -> BBox in plane-Koordinaten
+    xform = rg.Transform.PlaneToPlane(plane, rg.Plane.WorldXY)
+    bbox = rg.BoundingBox.Empty
+    for obj in objs:
+        try:
+            geom = obj.Geometry
+            if geom is None: continue
+            bb = geom.GetBoundingBox(xform)
+            if bb.IsValid:
+                bbox.Union(bb)
+        except Exception:
+            pass
+    return bbox if bbox.IsValid else None
+
+
+def _ref_point_local(bbox, ref):
+    """Referenzpunkt in plane-lokalen Koordinaten anhand ref-Dict
+    {x: 'min'|'mid'|'max', y: ..., z: ...}."""
+    def axis(amin, amax, code):
+        if code == "min": return amin
+        if code == "max": return amax
+        return (amin + amax) * 0.5
+    return rg.Point3d(
+        axis(bbox.Min.X, bbox.Max.X, ref.get("x", "min")),
+        axis(bbox.Min.Y, bbox.Max.Y, ref.get("y", "min")),
+        axis(bbox.Min.Z, bbox.Max.Z, ref.get("z", "mid")),
+    )
+
+
+def _ref_point_world(bbox_local, ref, plane):
+    """Referenzpunkt in Welt-Koordinaten: lokal -> plane.PointAt."""
+    p_local = _ref_point_local(bbox_local, ref)
+    return plane.PointAt(p_local.X, p_local.Y, p_local.Z)
+
+
+def _round(v, digits=4):
+    try:
+        return round(float(v), digits)
+    except Exception:
+        return v
+
+
+# --- Shape-Detection --------------------------------------------------------
+
+def _detect_shape(objs):
+    """Erkennt spezifische Formen: Kreis, Linie, Rechteck (geschlossene
+    planare Polyline mit 4 perpendikularen Segmenten). Liefert dict oder None.
+    Nur bei genau einem selektierten Curve-Objekt."""
+    if len(objs) != 1:
+        return None
+    obj = objs[0]
+    geom = obj.Geometry
+    if not isinstance(geom, rg.Curve):
+        return None
+    # Kreis?
+    try:
+        ok, circle = geom.TryGetCircle(0.001)
+        if ok and circle.IsValid:
+            return {
+                "type": "circle",
+                "radius": _round(circle.Radius, 4),
+                "center": [_round(circle.Center.X), _round(circle.Center.Y), _round(circle.Center.Z)],
+            }
+    except Exception:
+        pass
+    # Linie?
+    try:
+        if isinstance(geom, rg.LineCurve):
+            line = geom.Line
+            length = line.Length
+            angle_deg = math.degrees(math.atan2(line.Direction.Y, line.Direction.X))
+            return {
+                "type": "line",
+                "length": _round(length, 4),
+                "angle": _round(angle_deg, 3),
+                "start": [_round(line.From.X), _round(line.From.Y), _round(line.From.Z)],
+                "end":   [_round(line.To.X),   _round(line.To.Y),   _round(line.To.Z)],
+            }
+    except Exception:
+        pass
+    # Rechteck als geschlossene Polyline mit 4 perpendikularen Segmenten?
+    try:
+        ok, poly = geom.TryGetPolyline()
+        if ok and poly is not None and poly.Count == 5 and poly[0].DistanceTo(poly[-1]) < 1e-6:
+            pts = [poly[i] for i in range(4)]
+            v0 = pts[1] - pts[0]
+            v1 = pts[2] - pts[1]
+            v2 = pts[3] - pts[2]
+            v3 = pts[0] - pts[3]
+            def _dot(a, b): return a.X * b.X + a.Y * b.Y + a.Z * b.Z
+            # Adjacente Kanten perpendikular?
+            if (abs(_dot(v0, v1)) < 1e-4 and
+                abs(_dot(v1, v2)) < 1e-4 and
+                abs(_dot(v2, v3)) < 1e-4):
+                w = v0.Length
+                h = v1.Length
+                return {
+                    "type": "rectangle",
+                    "width": _round(w, 4),
+                    "height": _round(h, 4),
+                }
+    except Exception:
+        pass
+    return None
+
+
+# --- Transform-Operationen --------------------------------------------------
+
+def _apply_xform(doc, objs, xform):
+    """Transform auf alle Objekte anwenden (in-place via ID)."""
+    if not xform.IsValid: return 0
+    n = 0
+    for obj in objs:
+        try:
+            if doc.Objects.Transform(obj.Id, xform, True):
+                n += 1
+        except Exception as ex:
+            print("[DIMENSIONEN] Transform-Fehler:", ex)
+    return n
+
+
+# --- Undo-Wrapper -----------------------------------------------------------
+# Ohne BeginUndoRecord/EndUndoRecord wird ein Multi-Objekt-Transform nicht
+# zuverlaessig als ein einziger Undo-Schritt registriert — Ctrl+Z ueberspringt
+# dann unsere Aenderung. Wir packen jede User-Aktion in einen benannten Record.
+
+class _UndoRecord(object):
+    def __init__(self, doc, label):
+        self.doc = doc
+        self.label = label
+        self.serial = 0
+    def __enter__(self):
+        try:
+            self.serial = self.doc.BeginUndoRecord(self.label)
+        except Exception as ex:
+            print("[DIMENSIONEN] BeginUndoRecord:", ex)
+            self.serial = 0
+        return self
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        if self.serial:
+            try: self.doc.EndUndoRecord(self.serial)
+            except Exception as ex:
+                print("[DIMENSIONEN] EndUndoRecord:", ex)
+        return False  # exceptions propagieren
+
+
+def _translate_in_plane(doc, objs, plane, dx, dy, dz):
+    """Verschiebt um (dx, dy, dz) in plane-lokalen Achsen."""
+    if dx == 0 and dy == 0 and dz == 0: return
+    delta_world = plane.XAxis * dx + plane.YAxis * dy + plane.ZAxis * dz
+    xform = rg.Transform.Translation(delta_world)
+    with _UndoRecord(doc, "Dossier: Position aendern"):
+        _apply_xform(doc, objs, xform)
+    doc.Views.Redraw()
+
+
+def _scale_around_point(doc, objs, plane, ref_world, sx, sy, sz):
+    """Skalierung mit eigenen Faktoren pro Achse, zentriert am Referenzpunkt,
+    ausgerichtet an plane."""
+    if sx == 1 and sy == 1 and sz == 1: return
+    if sx <= 0 or sy <= 0 or sz <= 0:
+        print("[DIMENSIONEN] Ungueltige Skalierungsfaktoren:", sx, sy, sz)
+        return
+    p = rg.Plane(plane)
+    p.Origin = ref_world
+    xform = rg.Transform.Scale(p, sx, sy, sz)
+    with _UndoRecord(doc, "Dossier: Abmessung aendern"):
+        _apply_xform(doc, objs, xform)
+    doc.Views.Redraw()
+
+
+def _rotate_around_axis(doc, objs, ref_world, axis_dir, angle_deg):
+    """Rotation um axis_dir durch ref_world."""
+    if angle_deg == 0: return
+    xform = rg.Transform.Rotation(math.radians(angle_deg), axis_dir, ref_world)
+    with _UndoRecord(doc, "Dossier: Drehen"):
+        _apply_xform(doc, objs, xform)
+    doc.Views.Redraw()
+
+
+# --- Shape-Edit-Operationen -------------------------------------------------
+
+def _set_circle_radius(doc, obj, new_radius, plane, ref_world):
+    """Skaliert ein Kreis-Curve so, dass es genau new_radius hat — Referenz
+    bleibt fix. Wird ueber globale Scale realisiert, damit das Objekt
+    konsistent mit dem Rest selektierter Objekte transformiert wird."""
+    geom = obj.Geometry
+    ok, circle = geom.TryGetCircle(0.001)
+    if not ok or circle.Radius <= 0:
+        return False
+    factor = float(new_radius) / circle.Radius
+    if factor <= 0: return False
+    p = rg.Plane(plane)
+    p.Origin = ref_world
+    xform = rg.Transform.Scale(p, factor, factor, factor)
+    return bool(doc.Objects.Transform(obj.Id, xform, True))
+
+
+def _set_line_length(doc, obj, new_length, ref_world):
+    """Linie so verlaengern/verkuerzen, dass sie new_length hat. Skaliert
+    Linie entlang ihrer Richtung um den Referenzpunkt."""
+    geom = obj.Geometry
+    if not isinstance(geom, rg.LineCurve): return False
+    line = geom.Line
+    cur = line.Length
+    if cur <= 0: return False
+    factor = float(new_length) / cur
+    if factor <= 0: return False
+    # Linie skaliert sich nur entlang ihrer Direction. Scale-1D ueber eine
+    # Plane mit der Linien-Direction als X-Achse waere ideal — vereinfacht:
+    # uniformer Scale, falls Linie achsen-parallel zur lokalen X-Plane
+    # ist das aequivalent zu Length-Scaling.
+    xaxis = rg.Vector3d(line.Direction)
+    xaxis.Unitize()
+    yaxis = rg.Vector3d.CrossProduct(rg.Vector3d.ZAxis, xaxis)
+    if yaxis.Length < 1e-6:
+        yaxis = rg.Vector3d.YAxis
+    yaxis.Unitize()
+    plane = rg.Plane(ref_world, xaxis, yaxis)
+    xform = rg.Transform.Scale(plane, factor, 1.0, 1.0)
+    return bool(doc.Objects.Transform(obj.Id, xform, True))
+
+
+def _set_rectangle_dims(doc, obj, new_w, new_h, plane, ref_world):
+    """Skaliert Rechteck-Curve auf (new_w, new_h). Annahme: width = Laenge
+    erster Seite (v0), height = zweiter Seite (v1) in der Polyline-
+    Reihenfolge — entspricht der Reihenfolge aus _detect_shape."""
+    geom = obj.Geometry
+    if not isinstance(geom, rg.Curve): return False
+    ok, poly = geom.TryGetPolyline()
+    if not ok or poly is None or poly.Count != 5: return False
+    pts = [poly[i] for i in range(4)]
+    v0 = pts[1] - pts[0]
+    v1 = pts[2] - pts[1]
+    w_cur = v0.Length
+    h_cur = v1.Length
+    if w_cur <= 0 or h_cur <= 0: return False
+    sw = float(new_w) / w_cur
+    sh = float(new_h) / h_cur
+    if sw <= 0 or sh <= 0: return False
+    # Achsen des Rechtecks als Plane fuer den Scale
+    xaxis = rg.Vector3d(v0); xaxis.Unitize()
+    yaxis = rg.Vector3d(v1); yaxis.Unitize()
+    rect_plane = rg.Plane(ref_world, xaxis, yaxis)
+    xform = rg.Transform.Scale(rect_plane, sw, sh, 1.0)
+    return bool(doc.Objects.Transform(obj.Id, xform, True))
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class DimensionenBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "dimensionen")
+        self._ref       = {"x": "min", "y": "min", "z": "mid"}
+        self._coord_sys = "world"   # "world" | "cplane"
+        self._last_sig  = None
+        self._last_ids  = ()
+        self._idle_cnt  = 0
+
+    def _on_ready(self):
+        self._send_state(force=True)
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+
+        if   t == "READY":            self._on_ready()
+        elif t == "REQUEST_STATE":    self._send_state(force=True)
+        elif t == "SET_REF_POINT":    self._set_ref_point(p)
+        elif t == "SET_COORD_SYSTEM": self._set_coord_system(p)
+        elif t == "SET_POSITION":     self._set_position(p)
+        elif t == "SET_DIMENSION":    self._set_dimension(p)
+        elif t == "SET_ROTATION_Z":   self._set_rotation_z(p)
+        elif t == "SET_CIRCLE_RADIUS":self._set_circle_radius(p)
+        elif t == "SET_LINE_LENGTH":  self._set_line_length(p)
+        elif t == "SET_RECTANGLE":    self._set_rectangle(p)
+
+    # --- State-Snapshot -----------------------------------------------------
+
+    def _compute_state(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None:
+            return {"selection": {"count": 0, "type": "none", "shape": None},
+                    "refPoint": self._ref, "coordSystem": self._coord_sys}
+        objs = _get_selected_objects(doc)
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+
+        # Typ der Selektion
+        typ = "none"
+        if len(objs) == 0:
+            typ = "none"
+        elif len(objs) == 1:
+            g = objs[0].Geometry
+            if isinstance(g, rg.Curve):  typ = "curve"
+            elif isinstance(g, rg.Brep): typ = "brep"
+            elif isinstance(g, rg.Mesh): typ = "mesh"
+            elif isinstance(g, rg.Extrusion): typ = "extrusion"
+            elif isinstance(g, rg.InstanceReferenceGeometry): typ = "block"
+            elif isinstance(g, rg.Point): typ = "point"
+            elif isinstance(g, rg.TextEntity): typ = "text"
+            else: typ = "other"
+        else:
+            typ = "mixed"
+
+        out = {
+            "selection":   {"count": len(objs), "type": typ},
+            "refPoint":    self._ref,
+            "coordSystem": self._coord_sys,
+            "planeName":   "CPlane" if self._coord_sys == "cplane" else "Welt",
+        }
+        shape = _detect_shape(objs)
+        out["shape"] = shape
+
+        if bbox_local is None:
+            out["position"]   = None
+            out["dimensions"] = None
+            return out
+
+        # Position des Referenzpunkts (in plane-lokalen Koordinaten — das ist
+        # das, was der User typischerweise sehen will: World ist Plane=WorldXY,
+        # CPlane ist Plane=ActiveCPlane).
+        ref_local = _ref_point_local(bbox_local, self._ref)
+        out["position"] = {
+            "x": _round(ref_local.X, 4),
+            "y": _round(ref_local.Y, 4),
+            "z": _round(ref_local.Z, 4),
+        }
+        # Abmessungen (Plane-aligned BBox-Spannweite)
+        out["dimensions"] = {
+            "width":  _round(bbox_local.Max.X - bbox_local.Min.X, 4),
+            "depth":  _round(bbox_local.Max.Y - bbox_local.Min.Y, 4),
+            "height": _round(bbox_local.Max.Z - bbox_local.Min.Z, 4),
+        }
+        return out
+
+    def _send_state(self, force=False):
+        state = self._compute_state()
+        # Signature fuer Diff — komplette JSON-Repr ist ok bei kleinen Dicts
+        sig = (
+            state.get("selection", {}).get("count"),
+            state.get("selection", {}).get("type"),
+            (state.get("shape") or {}).get("type"),
+            state.get("coordSystem"),
+            tuple(sorted((state.get("refPoint") or {}).items())),
+            tuple(sorted((state.get("position") or {}).items())),
+            tuple(sorted((state.get("dimensions") or {}).items())),
+            tuple(sorted((state.get("shape") or {}).items())) if state.get("shape") else None,
+        )
+        if not force and sig == self._last_sig:
+            return
+        self._last_sig = sig
+        self.send("STATE", state)
+
+    def tick_idle(self):
+        # 1) Schnelle Selektions-Erkennung: ID-Liste vergleichen
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        try:
+            objs = _get_selected_objects(doc)
+            ids = tuple(sorted(str(o.Id) for o in objs))
+            if ids != self._last_ids:
+                self._last_ids = ids
+                self._send_state(force=True)
+                self._idle_cnt = 0
+                return
+        except Exception:
+            pass
+        # 2) Geometrie kann sich aendern ohne Selektions-Change (Gumball-Move).
+        #    Niedriger-frequenter Geom-Poll.
+        self._idle_cnt += 1
+        if self._idle_cnt >= _IDLE_GEOM_POLL:
+            self._idle_cnt = 0
+            self._send_state(force=False)
+
+    # --- Handler ------------------------------------------------------------
+
+    def _set_ref_point(self, p):
+        ref = self._ref
+        for k in ("x", "y", "z"):
+            v = p.get(k)
+            if v in ("min", "mid", "max"):
+                ref[k] = v
+        self._send_state(force=True)
+
+    def _set_coord_system(self, p):
+        mode = p.get("mode")
+        if mode in ("world", "cplane"):
+            self._coord_sys = mode
+            self._send_state(force=True)
+
+    def _set_position(self, p):
+        """Verschiebt Selektion so, dass der Referenzpunkt auf den neuen
+        Wert kommt. Nur die angegebene Achse wird geaendert."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = _get_selected_objects(doc)
+        if not objs: return
+        axis = p.get("axis")
+        try:    value = float(p.get("value"))
+        except Exception: return
+        if axis not in ("x", "y", "z"): return
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+        if bbox_local is None: return
+        ref_local = _ref_point_local(bbox_local, self._ref)
+        dx = dy = dz = 0.0
+        if axis == "x": dx = value - ref_local.X
+        if axis == "y": dy = value - ref_local.Y
+        if axis == "z": dz = value - ref_local.Z
+        _translate_in_plane(doc, objs, plane, dx, dy, dz)
+        self._send_state(force=True)
+
+    def _set_dimension(self, p):
+        """Skaliert Selektion in der angegebenen Achse, sodass der angegebene
+        Wert die neue Plane-aligned BBox-Spannweite ist. Referenzpunkt bleibt
+        fix."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = _get_selected_objects(doc)
+        if not objs: return
+        axis = p.get("axis")     # 'width' | 'depth' | 'height'
+        try:    value = float(p.get("value"))
+        except Exception: return
+        if axis not in ("width", "depth", "height"): return
+        if value <= 0: return
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+        if bbox_local is None: return
+        ref_world = _ref_point_world(bbox_local, self._ref, plane)
+        cur_w = bbox_local.Max.X - bbox_local.Min.X
+        cur_d = bbox_local.Max.Y - bbox_local.Min.Y
+        cur_h = bbox_local.Max.Z - bbox_local.Min.Z
+        sx = sy = sz = 1.0
+        if axis == "width"  and cur_w > 0: sx = value / cur_w
+        if axis == "depth"  and cur_d > 0: sy = value / cur_d
+        if axis == "height" and cur_h > 0: sz = value / cur_h
+        _scale_around_point(doc, objs, plane, ref_world, sx, sy, sz)
+        self._send_state(force=True)
+
+    def _set_rotation_z(self, p):
+        """Rotiert Selektion um die Z-Achse der aktiven Plane durch den
+        Referenzpunkt um angle Grad."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = _get_selected_objects(doc)
+        if not objs: return
+        try:    angle = float(p.get("angle"))
+        except Exception: return
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+        if bbox_local is None: return
+        ref_world = _ref_point_world(bbox_local, self._ref, plane)
+        _rotate_around_axis(doc, objs, ref_world, plane.ZAxis, angle)
+        self._send_state(force=True)
+
+    def _set_circle_radius(self, p):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = _get_selected_objects(doc)
+        if len(objs) != 1: return
+        try:    radius = float(p.get("value"))
+        except Exception: return
+        if radius <= 0: return
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+        if bbox_local is None: return
+        ref_world = _ref_point_world(bbox_local, self._ref, plane)
+        with _UndoRecord(doc, "Dossier: Radius aendern"):
+            _set_circle_radius(doc, objs[0], radius, plane, ref_world)
+        doc.Views.Redraw()
+        self._send_state(force=True)
+
+    def _set_line_length(self, p):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = _get_selected_objects(doc)
+        if len(objs) != 1: return
+        try:    length = float(p.get("value"))
+        except Exception: return
+        if length <= 0: return
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+        if bbox_local is None: return
+        ref_world = _ref_point_world(bbox_local, self._ref, plane)
+        with _UndoRecord(doc, "Dossier: Linienlaenge aendern"):
+            _set_line_length(doc, objs[0], length, ref_world)
+        doc.Views.Redraw()
+        self._send_state(force=True)
+
+    def _set_rectangle(self, p):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = _get_selected_objects(doc)
+        if len(objs) != 1: return
+        try:
+            w = float(p.get("width"))
+            h = float(p.get("height"))
+        except Exception:
+            return
+        if w <= 0 or h <= 0: return
+        plane = _active_plane(doc, self._coord_sys)
+        bbox_local = _bbox_in_plane(objs, plane)
+        if bbox_local is None: return
+        ref_world = _ref_point_world(bbox_local, self._ref, plane)
+        with _UndoRecord(doc, "Dossier: Rechteck-Abmessung"):
+            _set_rectangle_dims(doc, objs[0], w, h, plane, ref_world)
+        doc.Views.Redraw()
+        self._send_state(force=True)
+
+
+# --- Listener-Installation --------------------------------------------------
+
+def _install_listeners(bridge):
+    flag = "dimensionen_listeners"
+    sc.sticky["dimensionen_bridge"] = bridge
+    if sc.sticky.get(flag):
+        return
+
+    def on_idle(s, e):
+        b = sc.sticky.get("dimensionen_bridge")
+        if b is not None:
+            try: b.tick_idle()
+            except Exception as ex: print("[DIMENSIONEN] idle:", ex)
+
+    def on_select(s, e):
+        b = sc.sticky.get("dimensionen_bridge")
+        if b is not None:
+            try: b._send_state(force=True)
+            except Exception: pass
+
+    Rhino.RhinoApp.Idle += on_idle
+    try:
+        Rhino.RhinoDoc.SelectObjects   += on_select
+        Rhino.RhinoDoc.DeselectObjects += on_select
+        Rhino.RhinoDoc.DeselectAllObjects += on_select
+    except Exception as ex:
+        print("[DIMENSIONEN] select-events:", ex)
+    sc.sticky[flag] = True
+    print("[DIMENSIONEN] Listener aktiv (Idle + SelectObjects)")
+
+
+def _bridge_factory():
+    b = DimensionenBridge()
+    _install_listeners(b)
+    return b
+
+
+panel_base.register_and_open("dimensionen", "DIMENSIONEN", PANEL_GUID_STR,
+                             _bridge_factory, icon_spec=("D", "#9e7050"))
diff --git a/rhino/elemente.py b/rhino/elemente.py
new file mode 100644
index 0000000..3df4357
--- /dev/null
+++ b/rhino/elemente.py
@@ -0,0 +1,4775 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+elemente.py
+ELEMENTE-Panel: Smart Architektur-Elemente.
+Phase 1: Waende — Achsen-Linie (editierbar) + Volumen (auto-generiert).
+Achse ist die Quelle der Wahrheit, Volumen wird bei jeder Achsen-Aenderung
+oder Geschoss-Aenderung neu gebaut.
+"""
+import os
+import sys
+import json
+import uuid
+import Rhino
+import Rhino.Geometry as rg
+import System
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "5a6b7c8d-9e0f-4a1b-c2d3-e4f5061728e0"
+
+# UserString-Keys auf Elementen
+_KEY_ID         = "dossier_element_id"      # gemeinsame UUID Achse+Volumen
+_KEY_TYPE       = "dossier_element_type"    # "wand_axis" | "wand_volume"
+_KEY_GESCHOSS   = "dossier_geschoss"
+_KEY_DICKE      = "dossier_dicke"           # in doc-units
+_KEY_UK_OVER    = "dossier_uk_override"     # "" = auto, sonst float
+_KEY_OK_OVER    = "dossier_ok_override"
+_KEY_REFERENZ   = "dossier_referenz"        # "mid" | "left" | "right"
+_KEY_DACH_NEIGUNG = "dossier_dach_neigung"  # Grad als string ("30")
+_KEY_DACH_EAVE    = "dossier_dach_eave"     # Index der Traufkante (string)
+_KEY_DACH_TYP     = "dossier_dach_typ"      # "pult"|"sattel"|"walm"|"mansarde"
+_KEY_DACH_NEIG_UNTEN = "dossier_dach_neigung_unten"  # Mansarde: untere Neigung
+_KEY_DACH_KNICK_H    = "dossier_dach_knick_h"        # Mansarde: Hoehe des Knicks
+_KEY_DACH_VARIANTE   = "dossier_dach_variante"       # Mansarde: "walm" | "giebel" | "walm_giebel"
+# Oeffnungen (Fenster/Tueren) — Source = Point auf Wand-Achse
+_KEY_OEFF_TYP    = "dossier_oeff_typ"      # "fenster" | "tuer"
+_KEY_OEFF_PARENT = "dossier_oeff_parent"   # parent wand element_id
+_KEY_OEFF_BREITE = "dossier_oeff_breite"
+_KEY_OEFF_HOEHE  = "dossier_oeff_hoehe"
+_KEY_OEFF_BRUEST = "dossier_oeff_brueest"  # Bruestungshoehe (nur Fenster, sonst 0)
+_KEY_OEFF_RAHMEN_B     = "dossier_oeff_rahmen_b"      # Rahmen-Riegel-Breite (Profilbreite, in der Wandflaeche)
+_KEY_OEFF_RAHMEN_TIEFE = "dossier_oeff_rahmen_tiefe"  # Rahmen-Tiefe (entlang Wandnormale)
+_KEY_OEFF_RAHMEN_POS   = "dossier_oeff_rahmen_pos"    # "aussen" | "mid" | "innen" — Lage im Wandquerschnitt
+_KEY_OEFF_FLUEGEL      = "dossier_oeff_fluegel"       # Anzahl Fluegel (1,2,3,4)
+_KEY_OEFF_SIMS_AUS     = "dossier_oeff_sims_aus"      # Style: "ohne"|"schmal"|"standard"|"breit"
+_KEY_OEFF_SIMS_IN      = "dossier_oeff_sims_in"       # Style: "ohne"|"schmal"|"standard"|"breit"
+_KEY_OEFF_GLAS         = "dossier_oeff_glas"          # "1"|"0" — sichtbare Glas-Scheibe
+_KEY_OEFF_REFERENZ     = "dossier_oeff_referenz"      # "mid" | "links" | "rechts" — Lage des Klick-Punkts in der Oeffnung
+
+_OEFF_REFERENZ_OPTIONS = ("mid", "links", "rechts")
+
+# Treppen-spezifische Keys
+_KEY_GESCHOSS_END     = "dossier_geschoss_end"       # Zielgeschoss-ID (Treppe)
+_KEY_TREPPE_BREITE    = "dossier_treppe_breite"
+_KEY_TREPPE_N         = "dossier_treppe_n"           # Anzahl Stufen (Steigungen)
+_KEY_TREPPE_REFERENZ  = "dossier_treppe_referenz"    # "mid"|"links"|"rechts" — Lage der Lauflinie zur Treppe
+_KEY_TREPPE_MODUS     = "dossier_treppe_modus"       # "massiv"|"flach"|"plattenrand"
+_KEY_TREPPE_LAUF_D    = "dossier_treppe_lauf_d"      # Lauf-Plattendicke (m)
+_KEY_TREPPE_ART       = "dossier_treppe_art"         # "gerade"|"l"|"wendel"
+_KEY_TREPPE_H_OVER    = "dossier_treppe_h_over"      # eigene Hoehe (m); leer = Geschoss
+_KEY_TREPPE_SOLL      = "dossier_treppe_soll"        # JSON {s:[lo,hi,on], a:[lo,hi,on], sa:[lo,hi,on]}
+
+_TREPPE_SOLL_DEFAULT = {
+    "s":  [0.15, 0.20, True],
+    "a":  [0.21, 0.35, True],
+    "sa": [0.60, 0.65, True],
+}
+
+_TREPPE_MODI = ("massiv", "flach", "plattenrand")
+_TREPPE_ARTEN = ("gerade", "l", "wendel")
+
+# Sims-Stile (Aussen/Innen) — Dicke (Z), Auskragung (perp), Ueberhang seitlich
+_OEFF_SIMS_STYLES = {
+    "ohne":     None,
+    "schmal":   {"dicke": 0.03, "aus": 0.08, "ueberhang": 0.03},
+    "standard": {"dicke": 0.04, "aus": 0.14, "ueberhang": 0.05},
+    "breit":    {"dicke": 0.05, "aus": 0.22, "ueberhang": 0.06},
+}
+_OEFF_RAHMEN_POS_OPTIONS = ("aussen", "mid", "innen")
+
+
+# --- Last-Used-Defaults (sticky, session-life) ------------------------------
+# Speichert die letzten Werte (Dicke, Referenz, Modus, Neigung), damit der
+# naechste Create-Befehl mit denselben Defaults startet. Sticky ueberlebt
+# Doc-Wechsel, aber NICHT Rhino-Restart — was passt: "ich hab gerade 0.30
+# fuer eine Wand benutzt, neue Wand soll auch 0.30 sein".
+
+def _last(key, default):
+    return sc.sticky.get("elemente_last_" + key, default)
+
+
+def _save_last(**kwargs):
+    for k, v in kwargs.items():
+        sc.sticky["elemente_last_" + k] = v
+
+
+# --- Geschoss-Lookup --------------------------------------------------------
+
+def _load_geschosse(doc):
+    """Liest die Geschoss/Ebenen-Liste aus doc.Strings (vom Ebenen-Manager)."""
+    raw = doc.Strings.GetValue("dossier_zeichnungsebenen") or \
+          doc.Strings.GetValue("dossier_ebenen")
+    if not raw: return []
+    try:
+        data = json.loads(raw)
+        return data if isinstance(data, list) else []
+    except Exception:
+        return []
+
+
+def _geschoss_by_id(doc, gid):
+    if not gid: return None
+    for e in _load_geschosse(doc):
+        if isinstance(e, dict) and e.get("id") == gid:
+            return e
+    return None
+
+
+def _active_geschoss_id(doc):
+    """Liefert die ID des aktuell aktiven Geschosses (= im Ebenen-Manager
+    blau hervorgehoben). Falls keins gesetzt oder das aktive keine
+    Geschoss-Ebene ist (z.B. Schnitt/Ansicht), wird das erste echte
+    Geschoss zurueckgegeben."""
+    try:
+        active = doc.Strings.GetValue("dossier_active_id") or ""
+    except Exception:
+        active = ""
+    geschosse = [g for g in _load_geschosse(doc)
+                 if isinstance(g, dict) and g.get("isGeschoss")]
+    if active and any(g.get("id") == active for g in geschosse):
+        return active
+    return geschosse[0].get("id") if geschosse else ""
+
+
+def _active_geschoss_name(doc):
+    """Name des aktiven Geschosses fuer UI-Anzeige."""
+    gid = _active_geschoss_id(doc)
+    g = _geschoss_by_id(doc, gid)
+    return g.get("name", "") if g else ""
+
+
+def _resolve_uk_ok(doc, gid, uk_over, ok_over):
+    """Wand: UK = OKFF, OK = OKFF + Hoehe (Standard fuer Geschoss-volle Wand)."""
+    g = _geschoss_by_id(doc, gid)
+    if g is None:
+        uk = float(uk_over) if uk_over not in (None, "") else 0.0
+        ok = float(ok_over) if ok_over not in (None, "") else 3.0
+        return uk, ok
+    okff   = float(g.get("okff", 0.0))
+    hoehe  = float(g.get("hoehe", 3.0))
+    auto_uk = okff
+    auto_ok = okff + hoehe
+    uk = float(uk_over) if uk_over not in (None, "") else auto_uk
+    ok = float(ok_over) if ok_over not in (None, "") else auto_ok
+    return uk, ok
+
+
+def _resolve_decke_z(doc, gid, dicke, uk_over, ok_over):
+    """Decke: OK = OKFF des verknuepften Geschosses (= Bodenkante = 0.00
+    relativ zum Geschoss). UK = OK - dicke (Decke geht NACH UNTEN). OK ist
+    der natuerliche Fixpunkt: aendert sich die Dicke, wandert UK mit.
+
+    Override-Logik:
+      - Nur OK_override gesetzt → OK = override, UK = OK - dicke
+      - Nur UK_override gesetzt → UK = override, OK = UK + dicke
+      - Beide gesetzt → beide literal"""
+    g = _geschoss_by_id(doc, gid)
+    okff = float(g.get("okff", 0.0)) if g else 0.0
+    auto_ok = okff
+    has_ok = ok_over not in (None, "")
+    has_uk = uk_over not in (None, "")
+    if has_ok and has_uk:
+        return float(uk_over), float(ok_over)
+    if has_ok:
+        ok = float(ok_over)
+        return ok - float(dicke), ok
+    if has_uk:
+        uk = float(uk_over)
+        return uk, uk + float(dicke)
+    # Beide auto
+    return auto_ok - float(dicke), auto_ok
+
+
+# --- Layer-Pfade ------------------------------------------------------------
+
+def _find_ebene_sublayer_name(doc, keywords, default_code, default_name,
+                                default_color="#888888", default_lw=0.35):
+    """Findet aus der Ebenen-Liste den ersten Sublayer der einem der Keywords
+    entspricht. Wenn nicht gefunden, wird der Sublayer mit den Default-Werten
+    AUTOMATISCH in die Ebenen-Liste eingetragen (damit er auch im Ebenen-
+    Manager-UI erscheint) und der Rhinopanel-Bridge ein State-Refresh
+    getriggert. Ergebnis: 'CODE_NAME' wie 'WAENDE'."""
+    raw = doc.Strings.GetValue("dossier_ebenen")
+    ebenen = []
+    if raw:
+        try:
+            data = json.loads(raw)
+            if isinstance(data, list): ebenen = data
+        except Exception as ex:
+            print("[ELEMENTE] sublayer-lookup:", ex)
+    # 1) Per Keyword in der Liste suchen
+    for e in ebenen:
+        if not isinstance(e, dict): continue
+        name = (e.get("name") or "")
+        low = name.lower()
+        for kw in keywords:
+            if kw in low:
+                return "{}_{}".format(e.get("code", default_code),
+                                       name or default_name)
+    # 2) Auto-Add: weder Keyword noch Code vorhanden → Eintrag anlegen
+    if ebenen and not any(isinstance(e, dict) and e.get("code") == default_code
+                          for e in ebenen):
+        ebenen.append({
+            "code": default_code, "name": default_name,
+            "color": default_color, "lw": default_lw,
+            "visible": True, "locked": False,
+        })
+        try:
+            doc.Strings.SetString("dossier_ebenen",
+                                   json.dumps(ebenen, ensure_ascii=False))
+            print("[ELEMENTE] Ebene '{}_{}' automatisch hinzugefuegt".format(
+                default_code, default_name))
+            # Ebenen-Manager UI mit-informieren
+            b = sc.sticky.get("ebenen_bridge_ref") \
+                or sc.sticky.get("ebenen_bridge") \
+                or sc.sticky.get("rhinopanel_bridge")
+            if b is not None and hasattr(b, "_send_state"):
+                try: b._send_state()
+                except Exception: pass
+        except Exception as ex:
+            print("[ELEMENTE] Auto-Add fehler:", ex)
+    return "{}_{}".format(default_code, default_name)
+
+
+def _layer_path_axis(doc, geschoss_name):
+    """Wand-Achse + Volumen — Sublayer 'WÄNDE' (Code 20)."""
+    sub = _find_ebene_sublayer_name(doc, ["wand", "wände", "waende"],
+                                     "20", "WÄNDE",
+                                     default_color="#0a0a0a", default_lw=0.50)
+    return "{}::{}".format(geschoss_name, sub)
+
+
+def _layer_path_volume(doc, geschoss_name):
+    return _layer_path_axis(doc, geschoss_name)
+
+
+def _layer_path_decke(doc, geschoss_name):
+    """Decken-Outline + Volumen — Sublayer 'DECKEN' (Code 30)."""
+    sub = _find_ebene_sublayer_name(doc, ["decke"], "30", "DECKEN",
+                                     default_color="#605850", default_lw=0.35)
+    return "{}::{}".format(geschoss_name, sub)
+
+
+def _layer_path_dach(doc, geschoss_name):
+    """Dach-Outline + Volumen — Sublayer 'DÄCHER' (Code 31)."""
+    sub = _find_ebene_sublayer_name(doc, ["dach", "däch", "daech"],
+                                     "31", "DÄCHER",
+                                     default_color="#7a4a3a", default_lw=0.35)
+    return "{}::{}".format(geschoss_name, sub)
+
+
+def _layer_path_treppe(doc, geschoss_name):
+    """Treppen-Lauflinie + Volumen — Sublayer 'TREPPEN' (Code 40)."""
+    sub = _find_ebene_sublayer_name(doc, ["trepp"], "40", "TREPPEN",
+                                     default_color="#a08040", default_lw=0.35)
+    return "{}::{}".format(geschoss_name, sub)
+
+
+def _ensure_layer(doc, path):
+    """Stellt sicher, dass ein Layer-Pfad existiert. Liefert Layer-Index."""
+    idx = doc.Layers.FindByFullPath(path, -1)
+    if idx >= 0: return idx
+    # Schrittweise anlegen
+    parts = path.split("::")
+    parent_id = System.Guid.Empty
+    cur_path = ""
+    for part in parts:
+        cur_path = part if not cur_path else (cur_path + "::" + part)
+        idx = doc.Layers.FindByFullPath(cur_path, -1)
+        if idx < 0:
+            from Rhino.DocObjects import Layer
+            layer = Layer()
+            layer.Name = part
+            if parent_id != System.Guid.Empty:
+                layer.ParentLayerId = parent_id
+            idx = doc.Layers.Add(layer)
+        parent_id = doc.Layers[idx].Id
+    return idx
+
+
+# --- Wall-Konstruktion ------------------------------------------------------
+
+def _make_rectangle_preview(c1):
+    """Preview: 4 gruene Kanten des Rechtecks waehrend des Ziehens."""
+    import System.Drawing as SD
+    color = SD.Color.FromArgb(255, 90, 200, 90)
+    def handler(sender, e):
+        try:
+            cx, cy = e.CurrentPoint.X, e.CurrentPoint.Y
+            p1 = rg.Point3d(c1.X, c1.Y, 0)
+            p2 = rg.Point3d(cx,    c1.Y, 0)
+            p3 = rg.Point3d(cx,    cy,   0)
+            p4 = rg.Point3d(c1.X,  cy,   0)
+            for a, b in ((p1, p2), (p2, p3), (p3, p4), (p4, p1)):
+                e.Display.DrawLine(a, b, color, 2)
+        except Exception: pass
+    return handler
+
+
+def _make_rect3pt_preview(c1, c2):
+    """Preview fuer 3-Punkt-Rechteck. c2=None waehrend Sammlung der zweiten
+    Ecke (zeige Linie c1→Maus), sonst zeige rotiertes Rechteck."""
+    import System.Drawing as SD
+    color = SD.Color.FromArgb(255, 90, 200, 90)
+    p1 = rg.Point3d(c1.X, c1.Y, 0)
+    def handler(sender, e):
+        try:
+            cur = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            if c2 is None:
+                e.Display.DrawLine(p1, cur, color, 2)
+                return
+            p2 = rg.Point3d(c2.X, c2.Y, 0)
+            ex = p2.X - p1.X; ey = p2.Y - p1.Y
+            edge_len = (ex * ex + ey * ey) ** 0.5
+            if edge_len < 1e-9:
+                e.Display.DrawLine(p1, p2, color, 2); return
+            px = -ey / edge_len; py = ex / edge_len
+            d = (cur.X - p2.X) * px + (cur.Y - p2.Y) * py
+            p3 = rg.Point3d(p2.X + d * px, p2.Y + d * py, 0)
+            p4 = rg.Point3d(p1.X + d * px, p1.Y + d * py, 0)
+            for a, b in ((p1, p2), (p2, p3), (p3, p4), (p4, p1)):
+                e.Display.DrawLine(a, b, color, 2)
+        except Exception: pass
+    return handler
+
+
+def _make_circle_preview(center):
+    """Preview: Kreis vom Mittelpunkt zum Mauspunkt."""
+    import System.Drawing as SD
+    color = SD.Color.FromArgb(255, 90, 200, 90)
+    cen = rg.Point3d(center.X, center.Y, 0)
+    def handler(sender, e):
+        try:
+            cur = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            r = cen.DistanceTo(cur)
+            if r <= 1e-9: return
+            try:
+                e.Display.DrawCircle(rg.Circle(rg.Plane.WorldXY, cen, r), color, 2)
+            except Exception:
+                # Fallback: NurbsCurve zeichnen
+                e.Display.DrawCurve(rg.Circle(rg.Plane.WorldXY, cen, r).ToNurbsCurve(),
+                                    color, 2)
+        except Exception: pass
+    return handler
+
+
+def _collect_rectangle(doc, c1):
+    """Achsen-aligned Rechteck aus 2 diagonalen Ecken. Liefert geschlossene
+    PolylineCurve in XY-Ebene auf Z=0."""
+    try:
+        import Rhino.Input.Custom as ric
+        from Rhino.Input import GetResult
+    except Exception: return None
+    gp = ric.GetPoint()
+    gp.SetCommandPrompt("Gegenueberliegende Ecke")
+    try: gp.SetBasePoint(c1, True)
+    except Exception: pass
+    try: gp.DynamicDraw += _make_rectangle_preview(c1)
+    except Exception: pass
+    res = gp.Get()
+    if res != GetResult.Point: return None
+    c2 = gp.Point()
+    pts = [
+        rg.Point3d(c1.X, c1.Y, 0),
+        rg.Point3d(c2.X, c1.Y, 0),
+        rg.Point3d(c2.X, c2.Y, 0),
+        rg.Point3d(c1.X, c2.Y, 0),
+        rg.Point3d(c1.X, c1.Y, 0),
+    ]
+    return rg.PolylineCurve(rg.Polyline(pts))
+
+
+def _collect_rectangle_3pt(doc, c1):
+    """3-Punkt-Rechteck: c1 = erste Ecke, c2 = Ende der ersten Kante (definiert
+    Richtung), c3 = Punkt auf der gegenueberliegenden Seite (definiert Hoehe).
+    Erzeugt rotiertes Rechteck."""
+    try:
+        import Rhino.Input.Custom as ric
+        from Rhino.Input import GetResult
+    except Exception: return None
+    gp = ric.GetPoint()
+    gp.SetCommandPrompt("Ende der ersten Kante")
+    try: gp.SetBasePoint(c1, True)
+    except Exception: pass
+    try: gp.DynamicDraw += _make_rect3pt_preview(c1, None)
+    except Exception: pass
+    res = gp.Get()
+    if res != GetResult.Point: return None
+    c2 = gp.Point()
+    gp = ric.GetPoint()
+    gp.SetCommandPrompt("Hoehe (Punkt auf gegenueberliegender Seite)")
+    try: gp.SetBasePoint(c2, True)
+    except Exception: pass
+    try: gp.DynamicDraw += _make_rect3pt_preview(c1, c2)
+    except Exception: pass
+    res = gp.Get()
+    if res != GetResult.Point: return None
+    c3 = gp.Point()
+    ex = c2.X - c1.X
+    ey = c2.Y - c1.Y
+    edge_len = (ex * ex + ey * ey) ** 0.5
+    if edge_len < 1e-9: return None
+    # Perpendikular in XY (links der edge-Richtung)
+    px = -ey / edge_len
+    py =  ex / edge_len
+    # Signierte Distanz von c3 zur Edge (c1-c2)
+    d = (c3.X - c2.X) * px + (c3.Y - c2.Y) * py
+    p1 = rg.Point3d(c1.X, c1.Y, 0)
+    p2 = rg.Point3d(c2.X, c2.Y, 0)
+    p3 = rg.Point3d(c2.X + d * px, c2.Y + d * py, 0)
+    p4 = rg.Point3d(c1.X + d * px, c1.Y + d * py, 0)
+    return rg.PolylineCurve(rg.Polyline([p1, p2, p3, p4, p1]))
+
+
+def _collect_circle(doc, center):
+    """Kreis aus Mittelpunkt + Radiuspunkt. Liefert NurbsCurve."""
+    try:
+        import Rhino.Input.Custom as ric
+        from Rhino.Input import GetResult
+    except Exception: return None
+    gp = ric.GetPoint()
+    gp.SetCommandPrompt("Radiuspunkt")
+    try: gp.SetBasePoint(center, True)
+    except Exception: pass
+    try: gp.DynamicDraw += _make_circle_preview(center)
+    except Exception: pass
+    res = gp.Get()
+    if res != GetResult.Point: return None
+    rp = gp.Point()
+    cen = rg.Point3d(center.X, center.Y, 0)
+    rad_pt = rg.Point3d(rp.X, rp.Y, 0)
+    radius = cen.DistanceTo(rad_pt)
+    if radius <= 1e-9: return None
+    return rg.Circle(rg.Plane.WorldXY, cen, radius).ToNurbsCurve()
+
+
+def _make_decke_preview_handler(committed_points):
+    """Live-Preview waehrend Decken-Outline gezeichnet wird: gesetzte Segmente
+    + Rubberband + gestrichelte Schliessungs-Linie zurueck zum Startpunkt."""
+    import System.Drawing as SD
+    color_line = SD.Color.FromArgb(255,  90, 200,  90)
+    color_close = SD.Color.FromArgb(180, 150, 230, 150)
+    color_node = SD.Color.FromArgb(255, 255, 255, 255)
+    def handler(sender, e):
+        try:
+            cur = e.CurrentPoint
+            cur_xy = rg.Point3d(cur.X, cur.Y, 0)
+            pts = list(committed_points) + [cur_xy]
+            for i in range(len(pts) - 1):
+                e.Display.DrawLine(pts[i], pts[i + 1], color_line, 2)
+            # Schliessungs-Hinweis: gestrichelte Linie zurueck zum Startpunkt
+            if len(committed_points) >= 2:
+                try:
+                    e.Display.DrawDottedLine(cur_xy, committed_points[0], color_close)
+                except Exception:
+                    e.Display.DrawLine(cur_xy, committed_points[0], color_close, 1)
+            for pp in committed_points:
+                try: e.Display.DrawPoint(pp, color_node)
+                except Exception: pass
+        except Exception:
+            pass
+    return handler
+
+
+def _draw_axis_with_offsets(display, axis_curve, dicke, referenz,
+                             color_axis, color_edge):
+    """Zeichnet eine Wand-Achse + ihre Offset-Kanten (Aussenkanten der Wand).
+    Wird von allen Wand-Preview-Handlern wiederverwendet."""
+    try: display.DrawCurve(axis_curve, color_axis, 2)
+    except Exception: pass
+    plane = rg.Plane.WorldXY
+    tol = 0.001
+    half = float(dicke) / 2.0
+    if referenz == "left":
+        offsets = [0.0, -float(dicke)]
+    elif referenz == "right":
+        offsets = [+float(dicke), 0.0]
+    else:
+        offsets = [+half, -half]
+    for d in offsets:
+        try:
+            if abs(d) < 1e-9:
+                display.DrawCurve(axis_curve, color_edge, 1)
+            else:
+                result = axis_curve.Offset(plane, d, tol,
+                                            rg.CurveOffsetCornerStyle.Sharp)
+                if result:
+                    for c in result:
+                        display.DrawCurve(c, color_edge, 1)
+        except Exception: pass
+
+
+def _make_treppe_preview_handler(p0, breite, referenz, n_stufen,
+                                    fixed_length=None,
+                                    min_length=None, max_length=None):
+    """Live-Preview fuer die gerade Treppe waehrend der Lauflinien-Wahl.
+    Zeichnet: Lauflinie (Mitte), die zwei Aussenkanten (je nach Referenz)
+    sowie kurze Querstriche an jeder Setzstufen-Position.
+
+    Laengen-Steuerung (von hoechster zu niedrigster Prio):
+      - `fixed_length`: Mausvektor wird genau auf diese Laenge reskaliert
+      - `min_length` / `max_length`: Mausvektor wird in dieser Range
+        geclampt (frei innerhalb, Stop bei den Grenzen)
+      - sonst: Mausvektor wird unveraendert benutzt"""
+    import System.Drawing as SD
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    color_step = SD.Color.FromArgb(200, 200, 240, 120)
+    p0_xy = rg.Point3d(p0.X, p0.Y, 0)
+    N = max(2, int(n_stufen))
+    b = float(breite)
+    if referenz == "links":
+        perp_lo, perp_hi = 0.0, -b
+    elif referenz == "rechts":
+        perp_lo, perp_hi = 0.0, +b
+    else:
+        perp_lo, perp_hi = -b * 0.5, +b * 0.5
+
+    def handler(sender, e):
+        try:
+            mouse = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            tan_vec = rg.Vector3d(mouse.X - p0_xy.X, mouse.Y - p0_xy.Y, 0)
+            mouse_dist = tan_vec.Length
+            if mouse_dist < 1e-4: return
+            tan_vec.Unitize()
+            # Bei Regel-Modus: Endpunkt entweder fix oder in einer Range.
+            if fixed_length is not None and fixed_length > 1e-4:
+                L = float(fixed_length)
+                cur = rg.Point3d(p0_xy.X + tan_vec.X * L,
+                                   p0_xy.Y + tan_vec.Y * L, 0)
+            elif min_length is not None or max_length is not None:
+                lo = float(min_length) if min_length is not None else 1e-4
+                hi = float(max_length) if max_length is not None else 1e9
+                L = mouse_dist
+                if L < lo: L = lo
+                if L > hi: L = hi
+                cur = rg.Point3d(p0_xy.X + tan_vec.X * L,
+                                   p0_xy.Y + tan_vec.Y * L, 0)
+            else:
+                L = mouse_dist
+                cur = mouse
+            perp = rg.Vector3d(-tan_vec.Y, tan_vec.X, 0)
+
+            # Lauflinie (Mittel-Achse) gruen
+            try: e.Display.DrawLine(p0_xy, cur, color_axis, 2)
+            except Exception: pass
+
+            # Aussenkanten der Treppe (zwei Parallelen je nach Referenz)
+            def edge_at(perp_off):
+                ax = rg.Point3d(p0_xy.X + perp.X * perp_off,
+                                  p0_xy.Y + perp.Y * perp_off, 0)
+                bx = rg.Point3d(cur.X + perp.X * perp_off,
+                                  cur.Y + perp.Y * perp_off, 0)
+                try: e.Display.DrawLine(ax, bx, color_edge, 1)
+                except Exception: pass
+            edge_at(perp_lo); edge_at(perp_hi)
+
+            # Querstriche an jeder Setzstufen-Position (N Auftritte)
+            A = L / max(1, N)
+            for k in range(1, N + 1):
+                x = k * A
+                if x > L + 1e-6: break
+                mid = rg.Point3d(p0_xy.X + tan_vec.X * x,
+                                   p0_xy.Y + tan_vec.Y * x, 0)
+                a = rg.Point3d(mid.X + perp.X * perp_lo,
+                                 mid.Y + perp.Y * perp_lo, 0)
+                bp = rg.Point3d(mid.X + perp.X * perp_hi,
+                                 mid.Y + perp.Y * perp_hi, 0)
+                try: e.Display.DrawLine(a, bp, color_step, 1)
+                except Exception: pass
+        except Exception: pass
+    return handler
+
+
+def _make_treppe_wendel_preview(center, start, breite, referenz, n_stufen,
+                                   total_h=None, soll=None, regel_mode="frei"):
+    """Live-Preview fuer den 3. Klick einer Wendeltreppe. Zeichnet:
+    Mittelpunkt-Lauflinie + alle N Keile fuer die aktuelle End-Position.
+
+    Bei `regel_mode == "regel"` wird der Sweep auf einen gueltigen Bereich
+    geclampt — die Richtung kommt aus der Maus, die Drehung wird auf den
+    Soll-A-Wert beschraenkt. So bleiben Auftritt + 2S+A im Soll."""
+    import System.Drawing as SD
+    import math
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    color_step = SD.Color.FromArgb(200, 200, 240, 120)
+    cx, cy = center.X, center.Y
+    sx, sy = start.X, start.Y
+    r_click = math.sqrt((sx - cx) ** 2 + (sy - cy) ** 2)
+    if r_click < 0.05: r_click = 0.05
+    r_inner, r_outer = _wendel_radii(r_click, breite, referenz)
+    a_start_fixed = math.atan2(sy - cy, sx - cx)
+    N = max(2, int(n_stufen))
+
+    def handler(sender, e):
+        try:
+            mouse = e.CurrentPoint
+            cross_z = ((sx - cx) * (mouse.Y - cy)
+                        - (sy - cy) * (mouse.X - cx))
+            sweep_sign = 1.0 if cross_z >= 0 else -1.0
+            a_end_raw = math.atan2(mouse.Y - cy, mouse.X - cx)
+            delta = a_end_raw - a_start_fixed
+            if sweep_sign > 0:
+                while delta < 0: delta += 2.0 * math.pi
+            else:
+                while delta > 0: delta -= 2.0 * math.pi
+            if abs(delta) < 0.02: return
+            # Clamp Sweep im Regel-Modus — Auftritt-Soll wird ueber die
+            # GANZE Trittbreite (innen + aussen) erzwungen.
+            if regel_mode == "regel" and total_h is not None and soll is not None:
+                try:
+                    s_lo, s_hi = _wendel_sweep_range(
+                        r_click, breite, referenz, N, total_h, soll)
+                    raw = abs(delta)
+                    if raw < s_lo: clamped = s_lo
+                    elif raw > s_hi: clamped = s_hi
+                    else: clamped = raw
+                    delta = clamped * (1.0 if delta >= 0 else -1.0)
+                except Exception: pass
+            da = delta / N
+
+            # Lauflinie center→mouse
+            try:
+                e.Display.DrawLine(rg.Point3d(cx, cy, 0),
+                                     rg.Point3d(mouse.X, mouse.Y, 0),
+                                     color_axis, 1)
+            except Exception: pass
+
+            # Alle N Keile als Quad-Linien
+            for k in range(N):
+                a0 = a_start_fixed + k * da
+                a1 = a_start_fixed + (k + 1) * da
+                pi0 = rg.Point3d(cx + r_inner * math.cos(a0),
+                                   cy + r_inner * math.sin(a0), 0)
+                po0 = rg.Point3d(cx + r_outer * math.cos(a0),
+                                   cy + r_outer * math.sin(a0), 0)
+                pi1 = rg.Point3d(cx + r_inner * math.cos(a1),
+                                   cy + r_inner * math.sin(a1), 0)
+                po1 = rg.Point3d(cx + r_outer * math.cos(a1),
+                                   cy + r_outer * math.sin(a1), 0)
+                # Riser bei a0 (radial-Linie)
+                try: e.Display.DrawLine(pi0, po0, color_step, 1)
+                except Exception: pass
+                # Inner & outer "Bogen" (linear approximiert)
+                try: e.Display.DrawLine(pi0, pi1, color_edge, 1)
+                except Exception: pass
+                try: e.Display.DrawLine(po0, po1, color_edge, 1)
+                except Exception: pass
+            # Letzter Riser bei alpha_final
+            a_f = a_start_fixed + delta
+            pif = rg.Point3d(cx + r_inner * math.cos(a_f),
+                                cy + r_inner * math.sin(a_f), 0)
+            pof = rg.Point3d(cx + r_outer * math.cos(a_f),
+                                cy + r_outer * math.sin(a_f), 0)
+            try: e.Display.DrawLine(pif, pof, color_step, 1)
+            except Exception: pass
+
+            # Live-Label: Stufen, Sweep, Auftritt an Innen/Lauf/Aussen
+            try:
+                deg = abs(delta) * 180.0 / math.pi
+                A_in   = abs(da) * r_inner
+                A_lauf = abs(da) * r_click
+                A_out  = abs(da) * r_outer
+                lbl = "St {} | {:.0f}° | A i/l/a: {:.2f}/{:.2f}/{:.2f}".format(
+                    N, deg, A_in, A_lauf, A_out)
+                if regel_mode == "regel":
+                    lbl += "  (Regel)"
+                e.Display.DrawDot(rg.Point3d(mouse.X, mouse.Y, 0), lbl)
+            except Exception: pass
+        except Exception: pass
+    return handler
+
+
+def _make_treppe_l_corner_preview(p0, breite, referenz, total_n, total_h):
+    """Preview fuer den 2. Klick einer L-Treppe (Podest-Eck). Zeigt:
+    - Lauflinie + Aussenkanten
+    - Step-Lines an A_opt-Abstaenden (zeigt wo jeder Tritt landet)
+    - Live-Label mit N1 (Stufen vor Podest) und N2 (nach Podest)
+    """
+    import System.Drawing as SD
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    color_step = SD.Color.FromArgb(200, 200, 240, 120)
+    p0_xy = rg.Point3d(p0.X, p0.Y, 0)
+    half_b = float(breite) * 0.5
+    if referenz == "links":
+        perp_lo, perp_hi = 0.0, -float(breite)
+    elif referenz == "rechts":
+        perp_lo, perp_hi = 0.0, +float(breite)
+    else:
+        perp_lo, perp_hi = -half_b, +half_b
+
+    # A_opt aus Soll-Schrittmass 0.63 - 2*S, geclampt auf erlaubten Bereich
+    S = float(total_h) / max(1, int(total_n))
+    A_opt = 0.63 - 2.0 * S
+    if A_opt < 0.21: A_opt = 0.21
+    if A_opt > 0.35: A_opt = 0.35
+
+    def handler(sender, e):
+        try:
+            mouse = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            tan_vec = rg.Vector3d(mouse.X - p0_xy.X, mouse.Y - p0_xy.Y, 0)
+            L = tan_vec.Length
+            if L < 1e-4: return
+            tan_vec.Unitize()
+            perp = rg.Vector3d(-tan_vec.Y, tan_vec.X, 0)
+
+            try: e.Display.DrawLine(p0_xy, mouse, color_axis, 2)
+            except Exception: pass
+
+            def edge_at(perp_off):
+                a = rg.Point3d(p0_xy.X + perp.X * perp_off,
+                                 p0_xy.Y + perp.Y * perp_off, 0)
+                b = rg.Point3d(mouse.X + perp.X * perp_off,
+                                 mouse.Y + perp.Y * perp_off, 0)
+                try: e.Display.DrawLine(a, b, color_edge, 1)
+                except Exception: pass
+            edge_at(perp_lo); edge_at(perp_hi)
+
+            # N1 = Stufen die in Run 1 passen (effektive Laenge = L - half_b
+            # weil Podest die Haelfte einnimmt). N2 = restliche Stufen.
+            eff_L1 = max(0.0, L - half_b)
+            N1 = max(0, int(round(eff_L1 / A_opt)))
+            N1 = min(N1, int(total_n) - 1)
+            N2 = max(0, int(total_n) - N1)
+
+            # Step-Lines an N1 Positionen
+            for k in range(1, N1 + 1):
+                x = k * A_opt
+                if x > L + 1e-6: break
+                mid = rg.Point3d(p0_xy.X + tan_vec.X * x,
+                                   p0_xy.Y + tan_vec.Y * x, 0)
+                a = rg.Point3d(mid.X + perp.X * perp_lo,
+                                 mid.Y + perp.Y * perp_lo, 0)
+                bp = rg.Point3d(mid.X + perp.X * perp_hi,
+                                 mid.Y + perp.Y * perp_hi, 0)
+                try: e.Display.DrawLine(a, bp, color_step, 1)
+                except Exception: pass
+
+            # Live-Label am Mauspunkt
+            try:
+                e.Display.DrawDot(mouse, "Vor Podest: {} | Nach: {}".format(N1, N2))
+            except Exception: pass
+        except Exception: pass
+    return handler
+
+
+def _make_spline_preview_handler(committed_points, dicke, referenz):
+    """Preview fuer Spline-Wand: interpolierter NURBS durch committed + Maus."""
+    import System.Drawing as SD
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    color_node = SD.Color.FromArgb(255, 255, 255, 255)
+    def handler(sender, e):
+        try:
+            cur_xy = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            pts = list(committed_points) + [cur_xy]
+            if len(pts) < 2: return
+            axis = None
+            if len(pts) == 2:
+                axis = rg.LineCurve(pts[0], pts[1])
+            else:
+                try: axis = rg.Curve.CreateInterpolatedCurve(pts, 3)
+                except Exception:
+                    axis = rg.PolylineCurve(rg.Polyline(pts))
+            if axis is None: return
+            _draw_axis_with_offsets(e.Display, axis, dicke, referenz,
+                                     color_axis, color_edge)
+            for pp in committed_points:
+                try: e.Display.DrawPoint(pp, color_node)
+                except Exception: pass
+        except Exception: pass
+    return handler
+
+
+def _make_arc_preview_handler(p0, p_mid, dicke, referenz):
+    """Preview fuer Bogen-Wand. p_mid=None waehrend Sammlung des Mittelpunkts
+    (nur Linie zeigen), sonst echter Bogen p0→p_mid→Maus."""
+    import System.Drawing as SD
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    color_node = SD.Color.FromArgb(255, 255, 255, 255)
+    p0_xy = rg.Point3d(p0.X, p0.Y, 0)
+    def handler(sender, e):
+        try:
+            cur_xy = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            try: e.Display.DrawPoint(p0_xy, color_node)
+            except Exception: pass
+            if p_mid is None:
+                # Phase 1: Mittelpunkt — Rubberband-Linie
+                e.Display.DrawLine(p0_xy, cur_xy, color_axis, 2)
+                return
+            mid_xy = rg.Point3d(p_mid.X, p_mid.Y, 0)
+            try: e.Display.DrawPoint(mid_xy, color_node)
+            except Exception: pass
+            # Phase 2: Endpunkt — Bogen + Offsets
+            try: arc = rg.Arc(p0_xy, mid_xy, cur_xy)
+            except Exception: return
+            if not arc.IsValid: return
+            axis = rg.ArcCurve(arc)
+            _draw_axis_with_offsets(e.Display, axis, dicke, referenz,
+                                     color_axis, color_edge)
+        except Exception: pass
+    return handler
+
+
+def _make_rectangle_wall_preview_handler(c1, dicke, referenz):
+    """Preview fuer Wand-Rechteck: 4 Linien-Achsen + ihre Offsets."""
+    import System.Drawing as SD
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    c1_xy = rg.Point3d(c1.X, c1.Y, 0)
+    def handler(sender, e):
+        try:
+            cx = e.CurrentPoint.X
+            cy = e.CurrentPoint.Y
+            p1 = c1_xy
+            p2 = rg.Point3d(cx,        c1_xy.Y, 0)
+            p3 = rg.Point3d(cx,        cy,      0)
+            p4 = rg.Point3d(c1_xy.X,   cy,      0)
+            corners = [p1, p2, p3, p4, p1]
+            for i in range(4):
+                axis = rg.LineCurve(corners[i], corners[i + 1])
+                _draw_axis_with_offsets(e.Display, axis, dicke, referenz,
+                                         color_axis, color_edge)
+        except Exception: pass
+    return handler
+
+
+def _make_preview_handler(committed_points, dicke, referenz):
+    """Preview fuer Polylinie-Wand: gesetzte Punkte + Rubberband + Wand-Kanten."""
+    import System.Drawing as SD
+    color_axis = SD.Color.FromArgb(255,  90, 200,  90)
+    color_edge = SD.Color.FromArgb(180, 120, 220, 120)
+    color_node = SD.Color.FromArgb(255, 255, 255, 255)
+    def handler(sender, e):
+        try:
+            cur_xy = rg.Point3d(e.CurrentPoint.X, e.CurrentPoint.Y, 0)
+            pts = list(committed_points) + [cur_xy]
+            if len(pts) < 2: return
+            axis = (rg.LineCurve(pts[0], pts[1]) if len(pts) == 2
+                    else rg.PolylineCurve(rg.Polyline(pts)))
+            _draw_axis_with_offsets(e.Display, axis, dicke, referenz,
+                                     color_axis, color_edge)
+            for pp in committed_points:
+                try: e.Display.DrawPoint(pp, color_node)
+                except Exception: pass
+        except Exception: pass
+    return handler
+
+
+def _make_axis_geometry(p0, p1):
+    """2D-Wandlinie: Linie auf der UK-Hoehe. Aber damit der User die
+    Achse frei editieren kann, behalten wir die Linie in der XY-Ebene
+    auf Z=0 — UK/OK kommen aus dem Geschoss-Lookup, nicht aus der Linie.
+    """
+    return rg.LineCurve(rg.Point3d(p0.X, p0.Y, 0), rg.Point3d(p1.X, p1.Y, 0))
+
+
+def _make_volume_from_line(p0_xy, p1_xy, dicke, uk, ok):
+    """Fallback: gerade Wand aus zwei XY-Punkten."""
+    p0 = rg.Point3d(p0_xy.X, p0_xy.Y, uk)
+    p1 = rg.Point3d(p1_xy.X, p1_xy.Y, uk)
+    direction = rg.Vector3d(p1 - p0)
+    if direction.Length < 1e-9: return None
+    direction.Unitize()
+    normal = rg.Vector3d(-direction.Y, direction.X, 0)
+    half = dicke / 2.0
+    a = p0 + normal * half
+    b = p0 - normal * half
+    c = p1 - normal * half
+    d = p1 + normal * half
+    poly = rg.Polyline([a, b, c, d, a])
+    profile = rg.PolylineCurve(poly)
+    height = ok - uk
+    if height <= 0: return None
+    extrusion = rg.Extrusion.Create(profile, height, True)
+    if extrusion is None: return None
+    return extrusion.ToBrep()
+
+
+def _offset_curve(curve, plane, distance, tol):
+    """Curve.Offset-Wrapper der distance=0 als reine Kopie behandelt."""
+    if abs(distance) < 1e-9:
+        return [curve.DuplicateCurve()]
+    try:
+        result = curve.Offset(plane, distance, tol, rg.CurveOffsetCornerStyle.Sharp)
+        if result is None or len(result) == 0:
+            return None
+        return list(result)
+    except Exception:
+        return None
+
+
+def _make_volume_geometry(axis_curve, dicke, uk, ok, referenz="mid"):
+    """Baut die Wand-Brep aus einer beliebigen Achsen-Kurve.
+    referenz: 'mid' = Achse mittig, 'left'/'right' = Achse auf einer Aussen-
+    kante (Walking-Richtung der Kurve)."""
+    if not isinstance(axis_curve, rg.Curve): return None
+    dicke = float(dicke)
+    if dicke <= 0: return None
+    height = float(ok) - float(uk)
+    if height <= 0: return None
+
+    # Offsets bestimmen — Summe muss IMMER dicke sein
+    half = dicke / 2.0
+    if referenz == "left":
+        d_left, d_right = 0.0, -dicke
+    elif referenz == "right":
+        d_left, d_right = +dicke, 0.0
+    else:  # mid
+        d_left, d_right = +half, -half
+
+    plane = rg.Plane.WorldXY
+    tol = 0.001
+    left  = _offset_curve(axis_curve, plane, d_left,  tol)
+    right = _offset_curve(axis_curve, plane, d_right, tol)
+    if not left or not right:
+        return _make_volume_from_line(axis_curve.PointAtStart,
+                                      axis_curve.PointAtEnd, dicke, uk, ok)
+    L = left[0]
+    R = right[0]
+    try:
+        R.Reverse()
+        cap_start = rg.LineCurve(L.PointAtEnd,   R.PointAtStart)
+        cap_end   = rg.LineCurve(R.PointAtEnd,   L.PointAtStart)
+        joined = rg.Curve.JoinCurves([L, cap_start, R, cap_end], tol)
+    except Exception:
+        joined = None
+    if not joined or len(joined) == 0 or not joined[0].IsClosed:
+        return _make_volume_from_line(axis_curve.PointAtStart,
+                                      axis_curve.PointAtEnd, dicke, uk, ok)
+    profile = joined[0].DuplicateCurve()
+    if abs(uk) > 1e-9:
+        profile.Transform(rg.Transform.Translation(0, 0, uk))
+    extrusion = rg.Extrusion.Create(profile, height, True)
+    if extrusion is None: return None
+    return extrusion.ToBrep()
+
+
+def _attach_meta(obj_attrs, wall_id, type_, geschoss, dicke, uk_over, ok_over,
+                  referenz="mid", neigung=None, eave_idx=None, dach_typ=None,
+                  neigung_unten=None, knick_h=None, dach_variante=None,
+                  oeff_typ=None, oeff_parent=None, oeff_breite=None,
+                  oeff_hoehe=None, oeff_brueest=None,
+                  oeff_rahmen_b=None, oeff_rahmen_tiefe=None, oeff_rahmen_pos=None,
+                  oeff_fluegel=None,
+                  oeff_sims_aus=None, oeff_sims_in=None, oeff_glas=None,
+                  oeff_referenz=None,
+                  geschoss_end=None, treppe_breite=None,
+                  treppe_n=None, treppe_referenz=None,
+                  treppe_modus=None, treppe_lauf_d=None, treppe_art=None,
+                  treppe_h_over=None, treppe_soll=None):
+    """User-Strings auf die Object-Attributes setzen."""
+    obj_attrs.SetUserString(_KEY_ID,       wall_id)
+    obj_attrs.SetUserString(_KEY_TYPE,     type_)
+    obj_attrs.SetUserString(_KEY_GESCHOSS, geschoss or "")
+    obj_attrs.SetUserString(_KEY_DICKE,    "{:.6f}".format(float(dicke)))
+    obj_attrs.SetUserString(_KEY_UK_OVER,  "" if uk_over in (None, "") else "{:.6f}".format(float(uk_over)))
+    obj_attrs.SetUserString(_KEY_OK_OVER,  "" if ok_over in (None, "") else "{:.6f}".format(float(ok_over)))
+    obj_attrs.SetUserString(_KEY_REFERENZ, referenz if referenz in ("mid", "left", "right") else "mid")
+    if neigung is not None:
+        obj_attrs.SetUserString(_KEY_DACH_NEIGUNG, "{:.4f}".format(float(neigung)))
+    if eave_idx is not None:
+        obj_attrs.SetUserString(_KEY_DACH_EAVE, "{}".format(int(eave_idx)))
+    if dach_typ is not None and dach_typ in ("pult", "sattel", "walm", "mansarde"):
+        obj_attrs.SetUserString(_KEY_DACH_TYP, dach_typ)
+    if neigung_unten is not None:
+        obj_attrs.SetUserString(_KEY_DACH_NEIG_UNTEN, "{:.4f}".format(float(neigung_unten)))
+    if knick_h is not None:
+        obj_attrs.SetUserString(_KEY_DACH_KNICK_H, "{:.6f}".format(float(knick_h)))
+    if dach_variante is not None and dach_variante in ("walm", "giebel", "walm_giebel"):
+        obj_attrs.SetUserString(_KEY_DACH_VARIANTE, dach_variante)
+    if oeff_typ is not None and oeff_typ in ("fenster", "tuer"):
+        obj_attrs.SetUserString(_KEY_OEFF_TYP, oeff_typ)
+    if oeff_parent is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_PARENT, str(oeff_parent))
+    if oeff_breite is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_BREITE, "{:.4f}".format(float(oeff_breite)))
+    if oeff_hoehe is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_HOEHE, "{:.4f}".format(float(oeff_hoehe)))
+    if oeff_brueest is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_BRUEST, "{:.4f}".format(float(oeff_brueest)))
+    if oeff_rahmen_b is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_RAHMEN_B, "{:.4f}".format(float(oeff_rahmen_b)))
+    if oeff_rahmen_tiefe is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_RAHMEN_TIEFE, "{:.4f}".format(float(oeff_rahmen_tiefe)))
+    if oeff_rahmen_pos is not None and oeff_rahmen_pos in _OEFF_RAHMEN_POS_OPTIONS:
+        obj_attrs.SetUserString(_KEY_OEFF_RAHMEN_POS, oeff_rahmen_pos)
+    if oeff_fluegel is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_FLUEGEL, "{}".format(int(oeff_fluegel)))
+    if oeff_sims_aus is not None:
+        # akzeptiere Bool (legacy) oder Style-String
+        if isinstance(oeff_sims_aus, bool):
+            v = "standard" if oeff_sims_aus else "ohne"
+        else:
+            v = str(oeff_sims_aus)
+            if v not in _OEFF_SIMS_STYLES: v = "ohne"
+        obj_attrs.SetUserString(_KEY_OEFF_SIMS_AUS, v)
+    if oeff_sims_in is not None:
+        if isinstance(oeff_sims_in, bool):
+            v = "standard" if oeff_sims_in else "ohne"
+        else:
+            v = str(oeff_sims_in)
+            if v not in _OEFF_SIMS_STYLES: v = "ohne"
+        obj_attrs.SetUserString(_KEY_OEFF_SIMS_IN, v)
+    if oeff_glas is not None:
+        obj_attrs.SetUserString(_KEY_OEFF_GLAS, "1" if bool(oeff_glas) else "0")
+    if oeff_referenz is not None and oeff_referenz in _OEFF_REFERENZ_OPTIONS:
+        obj_attrs.SetUserString(_KEY_OEFF_REFERENZ, oeff_referenz)
+    # --- Treppen-Felder ---
+    if geschoss_end is not None:
+        obj_attrs.SetUserString(_KEY_GESCHOSS_END, geschoss_end or "")
+    if treppe_breite is not None:
+        obj_attrs.SetUserString(_KEY_TREPPE_BREITE, "{:.4f}".format(float(treppe_breite)))
+    if treppe_n is not None:
+        obj_attrs.SetUserString(_KEY_TREPPE_N, "{}".format(int(treppe_n)))
+    if treppe_referenz is not None and treppe_referenz in ("mid", "links", "rechts"):
+        obj_attrs.SetUserString(_KEY_TREPPE_REFERENZ, treppe_referenz)
+    if treppe_modus is not None and treppe_modus in _TREPPE_MODI:
+        obj_attrs.SetUserString(_KEY_TREPPE_MODUS, treppe_modus)
+    if treppe_lauf_d is not None:
+        obj_attrs.SetUserString(_KEY_TREPPE_LAUF_D, "{:.4f}".format(float(treppe_lauf_d)))
+    if treppe_art is not None and treppe_art in _TREPPE_ARTEN:
+        obj_attrs.SetUserString(_KEY_TREPPE_ART, treppe_art)
+    if treppe_h_over is not None:
+        if treppe_h_over == "" or treppe_h_over is None:
+            obj_attrs.SetUserString(_KEY_TREPPE_H_OVER, "")
+        else:
+            try:
+                obj_attrs.SetUserString(_KEY_TREPPE_H_OVER,
+                                         "{:.4f}".format(float(treppe_h_over)))
+            except Exception: pass
+    if treppe_soll is not None:
+        try:
+            import json
+            obj_attrs.SetUserString(_KEY_TREPPE_SOLL, json.dumps(treppe_soll))
+        except Exception: pass
+
+
+def _read_meta(obj):
+    """Liest Element-Metadaten von einem Rhino-Objekt. Liefert dict oder None."""
+    try:
+        a = obj.Attributes
+        type_ = a.GetUserString(_KEY_TYPE)
+        if not type_: return None
+        ref = a.GetUserString(_KEY_REFERENZ) or "mid"
+        if ref not in ("mid", "left", "right"): ref = "mid"
+        try: neigung = float(a.GetUserString(_KEY_DACH_NEIGUNG) or "30")
+        except Exception: neigung = 30.0
+        try: eave = int(a.GetUserString(_KEY_DACH_EAVE) or "0")
+        except Exception: eave = 0
+        dt = a.GetUserString(_KEY_DACH_TYP) or "pult"
+        if dt not in ("pult", "sattel", "walm", "mansarde"): dt = "pult"
+        try: nu = float(a.GetUserString(_KEY_DACH_NEIG_UNTEN) or "60")
+        except Exception: nu = 60.0
+        try: kh = float(a.GetUserString(_KEY_DACH_KNICK_H) or "2.0")
+        except Exception: kh = 2.0
+        dv = a.GetUserString(_KEY_DACH_VARIANTE) or "walm"
+        if dv not in ("walm", "giebel", "walm_giebel"): dv = "walm"
+        ot = a.GetUserString(_KEY_OEFF_TYP) or ""
+        if ot not in ("fenster", "tuer"): ot = ""
+        try: ob = float(a.GetUserString(_KEY_OEFF_BREITE) or "1.0")
+        except Exception: ob = 1.0
+        try: oh = float(a.GetUserString(_KEY_OEFF_HOEHE) or "1.4")
+        except Exception: oh = 1.4
+        try: obr = float(a.GetUserString(_KEY_OEFF_BRUEST) or "0.9")
+        except Exception: obr = 0.9
+        try: or_b = float(a.GetUserString(_KEY_OEFF_RAHMEN_B) or "0.06")
+        except Exception: or_b = 0.06
+        try: or_t = float(a.GetUserString(_KEY_OEFF_RAHMEN_TIEFE) or "0.08")
+        except Exception: or_t = 0.08
+        or_p = a.GetUserString(_KEY_OEFF_RAHMEN_POS) or "mid"
+        if or_p not in _OEFF_RAHMEN_POS_OPTIONS: or_p = "mid"
+        try: ofl = int(a.GetUserString(_KEY_OEFF_FLUEGEL) or "1")
+        except Exception: ofl = 1
+        if ofl < 1: ofl = 1
+        # Sims-Stile + Glas-Default
+        is_fenster = (ot == "fenster")
+        def _sims_style(raw, default_fenster):
+            if raw in _OEFF_SIMS_STYLES: return raw
+            if raw == "1": return "standard"  # Legacy bool true
+            if raw == "0": return "ohne"      # Legacy bool false
+            return ("standard" if is_fenster else "ohne") if default_fenster else "ohne"
+        sa_raw = a.GetUserString(_KEY_OEFF_SIMS_AUS) or ""
+        si_raw = a.GetUserString(_KEY_OEFF_SIMS_IN)  or ""
+        osa = _sims_style(sa_raw, True)
+        osi = _sims_style(si_raw, True)
+        og_raw = a.GetUserString(_KEY_OEFF_GLAS)
+        ogl = (og_raw == "1") if og_raw in ("0", "1") else is_fenster
+        oref = a.GetUserString(_KEY_OEFF_REFERENZ) or "mid"
+        if oref not in _OEFF_REFERENZ_OPTIONS: oref = "mid"
+        # Treppen-Felder
+        gend = a.GetUserString(_KEY_GESCHOSS_END) or ""
+        try: tb = float(a.GetUserString(_KEY_TREPPE_BREITE) or "1.0")
+        except Exception: tb = 1.0
+        try: tn = int(a.GetUserString(_KEY_TREPPE_N) or "15")
+        except Exception: tn = 15
+        if tn < 2: tn = 2
+        tref = a.GetUserString(_KEY_TREPPE_REFERENZ) or "mid"
+        if tref not in ("mid", "links", "rechts"): tref = "mid"
+        tmod = a.GetUserString(_KEY_TREPPE_MODUS) or "flach"
+        if tmod not in _TREPPE_MODI: tmod = "flach"
+        try: tld = float(a.GetUserString(_KEY_TREPPE_LAUF_D) or "0.18")
+        except Exception: tld = 0.18
+        tart = a.GetUserString(_KEY_TREPPE_ART) or "gerade"
+        if tart not in _TREPPE_ARTEN: tart = "gerade"
+        thov = a.GetUserString(_KEY_TREPPE_H_OVER) or ""
+        # Soll-Werte JSON, mit Defaults wenn nicht gesetzt
+        import json
+        tsoll = dict(_TREPPE_SOLL_DEFAULT)
+        soll_raw = a.GetUserString(_KEY_TREPPE_SOLL)
+        if soll_raw:
+            try:
+                parsed = json.loads(soll_raw)
+                if isinstance(parsed, dict):
+                    for k in ("s", "a", "sa"):
+                        if k in parsed and isinstance(parsed[k], list) and len(parsed[k]) >= 3:
+                            tsoll[k] = [float(parsed[k][0]), float(parsed[k][1]),
+                                          bool(parsed[k][2])]
+            except Exception: pass
+        return {
+            "id":         a.GetUserString(_KEY_ID) or "",
+            "type":       type_,
+            "geschoss":   a.GetUserString(_KEY_GESCHOSS) or "",
+            "dicke":      float(a.GetUserString(_KEY_DICKE) or "0.25"),
+            "uk_override": a.GetUserString(_KEY_UK_OVER) or "",
+            "ok_override": a.GetUserString(_KEY_OK_OVER) or "",
+            "referenz":   ref,
+            "neigung":    neigung,
+            "eave_idx":   eave,
+            "dach_typ":   dt,
+            "neigung_unten": nu,
+            "knick_h":    kh,
+            "dach_variante": dv,
+            "oeff_typ":     ot,
+            "oeff_parent":  a.GetUserString(_KEY_OEFF_PARENT) or "",
+            "oeff_breite":  ob,
+            "oeff_hoehe":   oh,
+            "oeff_brueest": obr,
+            "oeff_rahmen_b":     or_b,
+            "oeff_rahmen_tiefe": or_t,
+            "oeff_rahmen_pos":   or_p,
+            "oeff_fluegel":      ofl,
+            "oeff_sims_aus":     osa,
+            "oeff_sims_in":      osi,
+            "oeff_glas":         ogl,
+            "oeff_referenz":     oref,
+            "geschoss_end":      gend,
+            "treppe_breite":     tb,
+            "treppe_n":          tn,
+            "treppe_referenz":   tref,
+            "treppe_modus":      tmod,
+            "treppe_lauf_d":     tld,
+            "treppe_art":        tart,
+            "treppe_h_over":     thov,
+            "treppe_soll":       tsoll,
+        }
+    except Exception:
+        return None
+
+
+def _find_objects_by_wall_id(doc, wall_id, type_filter=None):
+    """Findet alle Rhino-Objekte mit der gegebenen wall_id."""
+    out = []
+    for obj in doc.Objects:
+        meta = _read_meta(obj)
+        if meta and meta["id"] == wall_id:
+            if type_filter is None or meta["type"] == type_filter:
+                out.append((obj, meta))
+    return out
+
+
+def _find_axis(doc, wall_id):
+    for obj, meta in _find_objects_by_wall_id(doc, wall_id, "wand_axis"):
+        return obj
+    return None
+
+
+def _find_volume(doc, wall_id):
+    for obj, meta in _find_objects_by_wall_id(doc, wall_id, "wand_volume"):
+        return obj
+    return None
+
+
+def _find_openings_for_wall(doc, wall_id):
+    """Alle Oeffnungs-Points (oeffnung_point) deren oeff_parent == wall_id."""
+    out = []
+    for obj in doc.Objects:
+        meta = _read_meta(obj)
+        if meta is None: continue
+        if meta["type"] != "oeffnung_point": continue
+        if meta.get("oeff_parent") != wall_id: continue
+        out.append((obj, meta))
+    return out
+
+
+def _oeff_effective_axis_point(axis_curve, point_on_axis, breite, referenz):
+    """Berechnet den effektiven Zentrums-Punkt der Oeffnung auf der Wand-
+    Achse — abhaengig davon ob der Klick-Punkt am linken/rechten Rand
+    oder in der Mitte der Oeffnung liegen soll.
+
+    referenz="mid" → Punkt liegt mittig: Zentrum = Klick-Punkt
+    referenz="links" → Klick-Punkt am linken Rand: Zentrum = pt + tan*half
+    referenz="rechts" → Klick-Punkt am rechten Rand: Zentrum = pt - tan*half
+
+    "links"/"rechts" beziehen sich auf die +tan/-tan Richtung der Wand-
+    Achse am Klick-Punkt. Mathematisch geht der Walk entlang der echten
+    Bogenlaenge auf der Kurve — funktioniert auch fuer gebogene Achsen."""
+    if referenz not in ("links", "rechts"):
+        return point_on_axis
+    if not isinstance(axis_curve, rg.Curve):
+        return point_on_axis
+    half = float(breite) * 0.5
+    try:
+        ok, t = axis_curve.ClosestPoint(point_on_axis)
+        if not ok: return point_on_axis
+        # Aktuelle Bogenlaenge vom Kurvenanfang bis t
+        sub = rg.Interval(axis_curve.Domain.Min, t)
+        try: arc_cur = axis_curve.GetLength(sub)
+        except Exception:
+            dom = axis_curve.Domain
+            arc_cur = ((t - dom.Min) / dom.Length) * axis_curve.GetLength()
+        if referenz == "links":
+            arc_new = arc_cur + half   # Zentrum +tan/2 vom Klick
+        else:                          # rechts
+            arc_new = arc_cur - half   # Zentrum -tan/2
+        total = axis_curve.GetLength()
+        if arc_new < 0: arc_new = 0
+        if arc_new > total: arc_new = total
+        lp = axis_curve.LengthParameter(arc_new)
+        t_new = None
+        if isinstance(lp, tuple) and len(lp) >= 2 and lp[0]:
+            t_new = lp[1]
+        if t_new is None:
+            # Fallback: lineare Parameter-Interpolation
+            dom = axis_curve.Domain
+            t_new = dom.Min + (arc_new / total) * dom.Length
+        return axis_curve.PointAt(t_new)
+    except Exception:
+        return point_on_axis
+
+
+def _make_oeffnung_cutout(axis_curve, point_on_axis, wall_dicke, breite,
+                           hoehe, brueest_h, base_z):
+    """Baut eine Cutout-Box die bei einer Wand-Regen via Boolean-Difference
+    abgezogen wird. Box ist zentriert am Point, entlang der Wand-Tangente
+    ausgerichtet, in Z von base_z+brueest bis base_z+brueest+hoehe, und
+    in Wand-Querrichtung leicht ueberdimensioniert (1.5x dicke) damit der
+    Schnitt sauber durch die Wand geht."""
+    if not isinstance(axis_curve, rg.Curve): return None
+    try:
+        ok, t = axis_curve.ClosestPoint(point_on_axis)
+        if not ok: return None
+        pt = axis_curve.PointAt(t)
+        tan = axis_curve.TangentAt(t)
+        tan = rg.Vector3d(tan.X, tan.Y, 0)
+        if tan.Length < 1e-9: return None
+        tan.Unitize()
+        perp = rg.Vector3d(-tan.Y, tan.X, 0)
+
+        half_b = float(breite) * 0.5
+        half_d = float(wall_dicke) * 1.5  # ueberdimensioniert quer zur Wand
+        z_low  = float(base_z) + float(brueest_h)
+        z_high = z_low + float(hoehe)
+        if z_high <= z_low + 1e-9: return None
+
+        c0 = rg.Point3d(pt.X - tan.X * half_b - perp.X * half_d,
+                         pt.Y - tan.Y * half_b - perp.Y * half_d, z_low)
+        c1 = rg.Point3d(pt.X + tan.X * half_b - perp.X * half_d,
+                         pt.Y + tan.Y * half_b - perp.Y * half_d, z_low)
+        c2 = rg.Point3d(pt.X + tan.X * half_b + perp.X * half_d,
+                         pt.Y + tan.Y * half_b + perp.Y * half_d, z_low)
+        c3 = rg.Point3d(pt.X - tan.X * half_b + perp.X * half_d,
+                         pt.Y - tan.Y * half_b + perp.Y * half_d, z_low)
+
+        poly = rg.Polyline([c0, c1, c2, c3, c0])
+        base_curve = rg.PolylineCurve(poly)
+        extrusion = rg.Extrusion.Create(base_curve, z_high - z_low, True)
+        if extrusion is None: return None
+        return extrusion.ToBrep()
+    except Exception as ex:
+        print("[ELEMENTE] _make_oeffnung_cutout:", ex)
+        return None
+
+
+def _oeff_axis_frame(axis_curve, point_on_axis):
+    """Liefert (pt, tan, perp) — pt projiziert auf Achse, tan = Wandrichtung
+    (XY-Projektion), perp = 90° CCW von tan (in XY). Return None bei Fehler."""
+    if not isinstance(axis_curve, rg.Curve): return None
+    try:
+        ok, t = axis_curve.ClosestPoint(point_on_axis)
+        if not ok: return None
+        pt = axis_curve.PointAt(t)
+        tan = axis_curve.TangentAt(t)
+        tan = rg.Vector3d(tan.X, tan.Y, 0)
+        if tan.Length < 1e-9: return None
+        tan.Unitize()
+        perp = rg.Vector3d(-tan.Y, tan.X, 0)
+        return pt, tan, perp
+    except Exception:
+        return None
+
+
+def _make_oeff_box(pt, tan, tan_lo, tan_hi, z_lo, z_hi, perp_lo, perp_hi):
+    """Baut eine achsen-orientierte Box-Brep im lokalen tan/Z/perp-System
+    relativ zur Wand-Achse am Punkt `pt`. Liefert Brep oder None."""
+    try:
+        plane = rg.Plane(rg.Point3d(pt.X, pt.Y, 0), tan,
+                          rg.Vector3d(0, 0, 1))
+        if tan_hi <= tan_lo + 1e-9 or z_hi <= z_lo + 1e-9 or perp_hi <= perp_lo + 1e-9:
+            return None
+        box = rg.Box(plane,
+                     rg.Interval(tan_lo, tan_hi),
+                     rg.Interval(z_lo, z_hi),
+                     rg.Interval(perp_lo, perp_hi))
+        return box.ToBrep()
+    except Exception as ex:
+        print("[ELEMENTE] _make_oeff_box:", ex)
+        return None
+
+
+def _resolve_rahmen_perp_range(half_d, rahmen_tiefe, rahmen_pos):
+    """Berechnet (perp_lo, perp_hi) entlang Plane.ZAxis fuer den Rahmen
+    je nach Position-Praeset. half_d = halbe Wandtiefe, rahmen_tiefe =
+    Profil-Tiefe entlang Wandnormale.
+
+    Konvention: Plane.ZAxis fuer unsere Box-Konstruktion ist
+    tan x (0,0,1) — d.h. eine Seite der Wand. "aussen" mappt empirisch
+    auf +Plane.ZAxis-Seite (kann je nach Wand-Achsrichtung andersrum
+    sein — User kann Wand-Achse mit Rhino-Befehl Dir umdrehen)."""
+    rt = max(0.01, float(rahmen_tiefe))
+    # Wenn Tiefe groesser als Wand → klammern (Inset 1mm damit kein Z-Fight)
+    rt = min(rt, 2.0 * half_d - 0.002)
+    if rt <= 0: rt = max(0.01, 2.0 * half_d - 0.002)
+    inset = 0.001
+    if rahmen_pos == "aussen":
+        hi = +half_d - inset
+        lo = hi - rt
+    elif rahmen_pos == "innen":
+        lo = -half_d + inset
+        hi = lo + rt
+    else:  # mid
+        lo = -rt * 0.5
+        hi = +rt * 0.5
+    return lo, hi
+
+
+def _make_oeffnung_pieces(axis_curve, point_on_axis, wall_dicke, oeff_meta, base_z):
+    """Baut die einzelnen Brep-Pieces der Oeffnung — Rahmen (single Brep
+    via Boolean-Differenz), Mittelpfosten (pro Fluegel), Glas, Sims aussen,
+    Sims innen. Liefert eine Liste von Breps. Caller persistiert jedes
+    als eigenes 'oeffnung_volume' Object mit der gleichen Oeffnungs-ID."""
+    frame = _oeff_axis_frame(axis_curve, point_on_axis)
+    if frame is None: return []
+    pt, tan, perp = frame
+
+    breite   = float(oeff_meta.get("oeff_breite", 1.0))
+    hoehe    = float(oeff_meta.get("oeff_hoehe",  1.4))
+    brueest  = float(oeff_meta.get("oeff_brueest", 0.9))
+    rahmen_b = float(oeff_meta.get("oeff_rahmen_b", 0.06))
+    rahmen_t = float(oeff_meta.get("oeff_rahmen_tiefe", 0.08))
+    rahmen_pos = oeff_meta.get("oeff_rahmen_pos", "mid")
+    fluegel  = max(1, int(oeff_meta.get("oeff_fluegel", 1)))
+    sims_aus_style = oeff_meta.get("oeff_sims_aus", "ohne")
+    sims_in_style  = oeff_meta.get("oeff_sims_in",  "ohne")
+    has_glas = bool(oeff_meta.get("oeff_glas", False))
+    is_tuer  = (oeff_meta.get("oeff_typ") == "tuer")
+
+    half_b = breite * 0.5
+    half_d = float(wall_dicke) * 0.5
+    z_lo = float(base_z) + brueest
+    z_hi = z_lo + hoehe
+
+    inner_l = -half_b + rahmen_b
+    inner_r = +half_b - rahmen_b
+    # Bei Tueren: KEIN unterer Riegel (Zarge ist 3-seitig). Das Innen-
+    # Loch geht bis unter den Outer-Box-Boden, sodass der Boolean-Diff
+    # den unteren Riegel wegschneidet.
+    inner_z_lo_frame = (z_lo - 0.01) if is_tuer else (z_lo + rahmen_b)
+    inner_z_hi_frame = z_hi - rahmen_b
+    # Fuer Mittelpfosten/Glas: bei Tueren beginnen die bei z_lo (Boden),
+    # bei Fenstern oberhalb des unteren Rahmens.
+    payload_z_lo = z_lo if is_tuer else (z_lo + rahmen_b)
+    payload_z_hi = z_hi - rahmen_b
+    if inner_l >= inner_r - 1e-6 or payload_z_lo >= payload_z_hi - 1e-6:
+        return []  # Rahmen-Profil zu dick fuer Oeffnung
+
+    frame_perp_lo, frame_perp_hi = _resolve_rahmen_perp_range(
+        half_d, rahmen_t, rahmen_pos)
+
+    pieces = []
+
+    # --- RAHMEN: outer box - inner box, sauberer single-Brep
+    try:
+        outer_box = _make_oeff_box(pt, tan, -half_b, +half_b, z_lo, z_hi,
+                                     frame_perp_lo, frame_perp_hi)
+        # Inner box leicht laenger in perp Richtung damit der Diff sauber
+        # durchschneidet (keine Hauchschicht uebrig).
+        inner_box = _make_oeff_box(pt, tan, inner_l, inner_r,
+                                     inner_z_lo_frame, inner_z_hi_frame,
+                                     frame_perp_lo - 0.01, frame_perp_hi + 0.01)
+        if outer_box is not None and inner_box is not None:
+            diff = rg.Brep.CreateBooleanDifference(
+                [outer_box], [inner_box], 0.001)
+            if diff and len(diff) > 0:
+                pieces.append(diff[0])
+            else:
+                pieces.append(outer_box)
+    except Exception as ex:
+        print("[ELEMENTE] Rahmen BoolDiff:", ex)
+
+    # --- Mittelpfosten (Fluegel > 1): kleine Stege im inneren Bereich
+    if fluegel > 1:
+        span = inner_r - inner_l
+        for i in range(1, fluegel):
+            x_mid = inner_l + span * (float(i) / fluegel)
+            x_lo  = x_mid - rahmen_b * 0.5
+            x_hi  = x_mid + rahmen_b * 0.5
+            mp = _make_oeff_box(pt, tan, x_lo, x_hi, payload_z_lo, payload_z_hi,
+                                  frame_perp_lo, frame_perp_hi)
+            if mp is not None: pieces.append(mp)
+
+    # --- INNERE FUELLUNG: Glas (Fenster oder verglaste Tuer) ODER
+    # Tuerblatt (massive Tuere ohne Glas). Beides als Box-Brep pro Fluegel.
+    if is_tuer and not has_glas:
+        # Tuerblatt — 40 mm massive Platte, mittig in Rahmen-Tiefe
+        fill_t = 0.04
+    elif has_glas:
+        fill_t = 0.012  # 12 mm Glas
+    else:
+        fill_t = 0  # nichts (z.B. Fenster ohne Glas)
+
+    if fill_t > 0:
+        fill_mid = (frame_perp_lo + frame_perp_hi) * 0.5
+        fill_lo = fill_mid - fill_t * 0.5
+        fill_hi = fill_mid + fill_t * 0.5
+        if fluegel > 1:
+            span = inner_r - inner_l
+            for i in range(fluegel):
+                fx_lo = inner_l + span * (float(i) / fluegel)
+                fx_hi = inner_l + span * (float(i + 1) / fluegel)
+                if i > 0:           fx_lo += rahmen_b * 0.5
+                if i < fluegel - 1: fx_hi -= rahmen_b * 0.5
+                fp = _make_oeff_box(pt, tan, fx_lo, fx_hi,
+                                      payload_z_lo, payload_z_hi,
+                                      fill_lo, fill_hi)
+                if fp is not None: pieces.append(fp)
+        else:
+            fp = _make_oeff_box(pt, tan, inner_l, inner_r,
+                                  payload_z_lo, payload_z_hi,
+                                  fill_lo, fill_hi)
+            if fp is not None: pieces.append(fp)
+
+    # --- SIMS AUSSEN (+Plane.ZAxis-Seite) — Platte unter der Oeffnung
+    sa = _OEFF_SIMS_STYLES.get(sims_aus_style)
+    if sa is not None:
+        s_t = sa["dicke"]; s_pr = sa["aus"]; s_oh = sa["ueberhang"]
+        s_lo = z_lo - s_t
+        sb = _make_oeff_box(pt, tan,
+                              -half_b - s_oh, +half_b + s_oh,
+                              s_lo, z_lo,
+                              +half_d, +half_d + s_pr)
+        if sb is not None: pieces.append(sb)
+
+    # --- SIMS INNEN (-Plane.ZAxis-Seite) — Platte unter der Oeffnung
+    si = _OEFF_SIMS_STYLES.get(sims_in_style)
+    if si is not None:
+        s_t = si["dicke"]; s_pr = si["aus"]; s_oh = si["ueberhang"]
+        s_lo = z_lo - s_t
+        sb = _make_oeff_box(pt, tan,
+                              -half_b - s_oh, +half_b + s_oh,
+                              s_lo, z_lo,
+                              -half_d - s_pr, -half_d)
+        if sb is not None: pieces.append(sb)
+
+    return pieces
+
+
+SOURCE_TYPES = ("wand_axis", "decke_outline", "dach_outline",
+                "oeffnung_point", "treppe_axis")
+VOLUME_TYPES = ("wand_volume", "decke_volume", "dach_volume",
+                "oeffnung_volume", "treppe_volume")
+# Oeffnungs-Cutout: Boolean-Difference aus Wand. Zusaetzlich kriegt die
+# Oeffnung ihr eigenes Volumen (Rahmen + Sims + Glas) als Sub-Element.
+
+
+def _find_source(doc, element_id):
+    """Source-Objekt — Achse (Wand) bzw. Outline (Decke/Dach)."""
+    for obj, meta in _find_objects_by_wall_id(doc, element_id):
+        if meta["type"] in SOURCE_TYPES:
+            return obj, meta
+    return None, None
+
+
+def _find_target_volume(doc, element_id):
+    """Volumen-Objekt (Brep)."""
+    for obj, meta in _find_objects_by_wall_id(doc, element_id):
+        if meta["type"] in VOLUME_TYPES:
+            return obj
+    return None
+
+
+# --- Dach-Helpers (Pultdach) -------------------------------------------------
+
+def _resolve_dach_base(doc, gid, uk_over):
+    """Basis-Hoehe des Dachs an der Traufe (= Eave) = OKFF + Hoehe des
+    Geschosses (Oberkante der Waende). uk_override kann das ueberschreiben."""
+    g = _geschoss_by_id(doc, gid)
+    if g is None:
+        return float(uk_over) if uk_over not in (None, "") else 3.0
+    okff = float(g.get("okff", 0.0))
+    hoehe = float(g.get("hoehe", 3.0))
+    auto = okff + hoehe
+    return float(uk_over) if uk_over not in (None, "") else auto
+
+
+def _outline_points_xy(outline_curve):
+    """Extrahiert XY-Vertices einer geschlossenen Polyline (ohne Schluss-
+    Duplikat). Liefert Liste von Point3d mit Z=0."""
+    if not isinstance(outline_curve, rg.Curve): return []
+    ok, poly = outline_curve.TryGetPolyline()
+    if not ok or poly is None: return []
+    pts = [poly[i] for i in range(poly.Count)]
+    if len(pts) > 1 and pts[0].DistanceTo(pts[-1]) < 1e-6:
+        pts = pts[:-1]
+    return [rg.Point3d(p.X, p.Y, 0) for p in pts]
+
+
+def _thicken_roof_inward(top_brep, dicke, tol=0.001):
+    """Verdickt eine offene Brep-Schale (oberes Dachshell) entlang der
+    Flaechen-Normalen um `dicke` nach innen — d.h. senkrecht zur jeweiligen
+    Dachflaeche, nicht nur vertikal. Liefert geschlossenen Festkoerper-Brep.
+
+    Die Normalen-Richtung der gejointen Schale haengt von der Zeichen-
+    richtung der Outline ab (CW vs CCW von oben). Statt blind ein
+    Vorzeichen zu raten probiert die Funktion beide Richtungen und
+    waehlt das Resultat das tatsaechlich nach UNTEN extrudiert (d.h.
+    die Unterseite des Daches unter der originalen Aussenflaeche)."""
+    if top_brep is None: return None
+    d = float(dicke)
+    if d <= 1e-9: return top_brep
+
+    orig_bbox = top_brep.GetBoundingBox(True)
+    orig_min_z = orig_bbox.Min.Z
+
+    def _try(distance, extend):
+        try:
+            result = rg.Brep.CreateOffsetBrep(top_brep, distance, True, extend, tol)
+            if isinstance(result, tuple):
+                arr = result[0]
+            elif hasattr(result, '__len__'):
+                arr = result
+            else:
+                arr = None
+            if arr and len(arr) > 0:
+                return arr[0]
+        except Exception as ex:
+            print("[ELEMENTE] CreateOffsetBrep ({}, extend={}):".format(distance, extend), ex)
+        return None
+
+    # Probiere beide Vorzeichen (+/-d), beide extend-Varianten.
+    candidates = []
+    for distance in (-d, d):
+        r = _try(distance, False)
+        if r is None:
+            r = _try(distance, True)
+        if r is not None:
+            candidates.append(r)
+
+    if not candidates: return None
+
+    # Bevorzuge das Resultat das nach UNTEN extrudiert — die Unterseite des
+    # Daches muss unter dem original Top-Brep-Min-Z liegen. Sonst geht die
+    # Verdickung nach aussen (nach oben), was wir nicht wollen.
+    threshold = max(1e-4, d * 0.05)
+    for c in candidates:
+        bb = c.GetBoundingBox(True)
+        if bb.Min.Z < orig_min_z - threshold:
+            return c
+    return candidates[0]
+
+
+def _join_open_shell(faces, tol=0.001):
+    """Joined eine Liste planarer Brep-Faces zu einer offenen Brep-Schale."""
+    valid = [f for f in faces if f is not None]
+    if not valid: return None
+    try:
+        joined = rg.Brep.JoinBreps(valid, tol)
+        if joined and len(joined) > 0:
+            return joined[0]
+    except Exception as ex:
+        print("[ELEMENTE] _join_open_shell:", ex)
+    return None
+
+
+def _make_pultdach_volume(outline_curve, dicke, base_height, slope_deg, eave_idx):
+    """Pultdach: obere Dachflaeche liegt geneigt auf der Eckpunkt-Hoehe
+    je Punkt (Eave bei base_height, opposite Seite ansteigend). Die
+    Dicke wird senkrecht zur Dachflaeche nach innen extrudiert (via
+    CreateOffsetBrep). Liefert geschlossenen Festkoerper-Brep oder None."""
+    import math
+    pts_xy = _outline_points_xy(outline_curve)
+    n = len(pts_xy)
+    if n < 3: return None
+    if eave_idx < 0 or eave_idx >= n: eave_idx = 0
+    a = pts_xy[eave_idx]
+    b = pts_xy[(eave_idx + 1) % n]
+    eave_vec = rg.Vector3d(b.X - a.X, b.Y - a.Y, 0)
+    if eave_vec.Length < 1e-9: return None
+    eave_vec.Unitize()
+    perp = rg.Vector3d(-eave_vec.Y, eave_vec.X, 0)
+    sample_idx = (eave_idx + 2) % n
+    sv = rg.Vector3d(pts_xy[sample_idx].X - a.X, pts_xy[sample_idx].Y - a.Y, 0)
+    d_sample = sv.X * perp.X + sv.Y * perp.Y
+    if d_sample < 0:
+        perp = -perp
+
+    tan_s = math.tan(math.radians(float(slope_deg)))
+    top_pts = []
+    for p in pts_xy:
+        dv = rg.Vector3d(p.X - a.X, p.Y - a.Y, 0)
+        d = dv.X * perp.X + dv.Y * perp.Y
+        if d < 0: d = 0.0
+        z_top = base_height + d * tan_s
+        top_pts.append(rg.Point3d(p.X, p.Y, z_top))
+    top_pts.append(top_pts[0])
+
+    tol = 0.001
+    try:
+        top_curve = rg.PolylineCurve(rg.Polyline(top_pts))
+        top_faces = rg.Brep.CreatePlanarBreps([top_curve], tol)
+        if not top_faces or len(top_faces) == 0: return None
+        top_brep = top_faces[0]
+        return _thicken_roof_inward(top_brep, dicke, tol)
+    except Exception as ex:
+        print("[ELEMENTE] Pultdach Brep:", ex)
+        return None
+
+
+def _make_satteldach_brep(outline_curve, dicke, base_height, slope_deg, ridge_along='long'):
+    """Satteldach: zwei geneigte Trapeze treffen sich am First, mit
+    senkrechter Dicke nach innen extrudiert via CreateOffsetBrep.
+    Erfordert eine 4-Punkt-Outline (Rechteck). ridge_along='long' →
+    First entlang der laengeren Achse, 'short' → entlang der kuerzeren."""
+    import math
+    pts = _outline_points_xy(outline_curve)
+    if len(pts) != 4: return None
+    e01 = pts[0].DistanceTo(pts[1])
+    e12 = pts[1].DistanceTo(pts[2])
+    long_axis_is_01 = e01 >= e12
+    use_01_as_long = long_axis_is_01 if ridge_along == 'long' else (not long_axis_is_01)
+    short_len = min(e01, e12) if use_01_as_long else max(e01, e12)
+    # short_len = die Spannweite quer zur First-Achse
+    if use_01_as_long:
+        span = e12  # quer zur First-Achse (= zu Edges 0-1, 2-3)
+    else:
+        span = e01
+    half_span = span * 0.5
+    ridge_z = base_height + half_span * math.tan(math.radians(float(slope_deg)))
+
+    c0 = rg.Point3d(pts[0].X, pts[0].Y, base_height)
+    c1 = rg.Point3d(pts[1].X, pts[1].Y, base_height)
+    c2 = rg.Point3d(pts[2].X, pts[2].Y, base_height)
+    c3 = rg.Point3d(pts[3].X, pts[3].Y, base_height)
+    if use_01_as_long:
+        # First parallel zu 0-1 und 2-3 → Endpunkte mid(1-2) und mid(3-0)
+        ridge_a = rg.Point3d((pts[3].X + pts[0].X) * 0.5,
+                              (pts[3].Y + pts[0].Y) * 0.5, ridge_z)
+        ridge_b = rg.Point3d((pts[1].X + pts[2].X) * 0.5,
+                              (pts[1].Y + pts[2].Y) * 0.5, ridge_z)
+        # Trapeze (outer-facing, CCW von aussen)
+        face_a_pts = [c0, c1, ridge_b, ridge_a, c0]  # Seite 0-1
+        face_b_pts = [c2, c3, ridge_a, ridge_b, c2]  # Seite 2-3
+    else:
+        ridge_a = rg.Point3d((pts[0].X + pts[1].X) * 0.5,
+                              (pts[0].Y + pts[1].Y) * 0.5, ridge_z)
+        ridge_b = rg.Point3d((pts[2].X + pts[3].X) * 0.5,
+                              (pts[2].Y + pts[3].Y) * 0.5, ridge_z)
+        face_a_pts = [c1, c2, ridge_b, ridge_a, c1]  # Seite 1-2
+        face_b_pts = [c3, c0, ridge_a, ridge_b, c3]  # Seite 3-0
+
+    tol = 0.001
+    faces = [_planar_face_from_pts(face_a_pts, tol),
+             _planar_face_from_pts(face_b_pts, tol)]
+    top_brep = _join_open_shell(faces, tol)
+    return _thicken_roof_inward(top_brep, dicke, tol)
+
+
+def _make_walmdach_brep(outline_curve, dicke, base_height, slope_deg):
+    """Walmdach fuer Rechteck-Outline: 4 geneigte Flaechen, die am First
+    zusammenlaufen. Bei einem Quadrat → Zeltdach (= Pyramidendach)."""
+    import math
+    pts = _outline_points_xy(outline_curve)
+    if len(pts) != 4: return None
+    e01 = pts[0].DistanceTo(pts[1])
+    e12 = pts[1].DistanceTo(pts[2])
+    long_axis_is_01 = e01 >= e12
+    # First entlang langer Achse; Laenge des Firsts = laengere Seite minus
+    # kuerzere Seite (= 2x hip-inset)
+    long_len  = max(e01, e12)
+    short_len = min(e01, e12)
+    half_short = short_len * 0.5
+    tan_s = math.tan(math.radians(float(slope_deg)))
+    ridge_height = half_short * tan_s
+    # Firstpunkte = mittlere Punkte der kurzen Kanten, jeweils nach innen
+    # verschoben um half_short (= hip-inset, damit alle 4 Walmflaechen
+    # denselben Neigungswinkel haben)
+    if long_axis_is_01:
+        # Lange Kanten: 0-1 und 2-3. Kurze Kanten: 1-2 und 3-0.
+        mid_12 = rg.Point3d((pts[1].X + pts[2].X) * 0.5,
+                             (pts[1].Y + pts[2].Y) * 0.5, 0)
+        mid_30 = rg.Point3d((pts[3].X + pts[0].X) * 0.5,
+                             (pts[3].Y + pts[0].Y) * 0.5, 0)
+        long_dir = pts[1] - pts[0]
+        long_dir.Z = 0
+        long_unit = rg.Vector3d(long_dir); long_unit.Unitize()
+        # ridge points sind die mids nach innen entlang -long_unit / +long_unit
+        ridge_a = rg.Point3d(mid_30.X + long_unit.X * half_short,
+                              mid_30.Y + long_unit.Y * half_short,
+                              base_height + ridge_height)
+        ridge_b = rg.Point3d(mid_12.X - long_unit.X * half_short,
+                              mid_12.Y - long_unit.Y * half_short,
+                              base_height + ridge_height)
+    else:
+        mid_01 = rg.Point3d((pts[0].X + pts[1].X) * 0.5,
+                             (pts[0].Y + pts[1].Y) * 0.5, 0)
+        mid_23 = rg.Point3d((pts[2].X + pts[3].X) * 0.5,
+                             (pts[2].Y + pts[3].Y) * 0.5, 0)
+        long_dir = pts[2] - pts[1]
+        long_dir.Z = 0
+        long_unit = rg.Vector3d(long_dir); long_unit.Unitize()
+        ridge_a = rg.Point3d(mid_01.X + long_unit.X * half_short,
+                              mid_01.Y + long_unit.Y * half_short,
+                              base_height + ridge_height)
+        ridge_b = rg.Point3d(mid_23.X - long_unit.X * half_short,
+                              mid_23.Y - long_unit.Y * half_short,
+                              base_height + ridge_height)
+    # Outer (oben sichtbar) Eckpunkte auf base_height
+    c0 = rg.Point3d(pts[0].X, pts[0].Y, base_height)
+    c1 = rg.Point3d(pts[1].X, pts[1].Y, base_height)
+    c2 = rg.Point3d(pts[2].X, pts[2].Y, base_height)
+    c3 = rg.Point3d(pts[3].X, pts[3].Y, base_height)
+    is_square = abs(long_len - short_len) < 1e-6
+    tol = 0.001
+    faces = []
+
+    def add_face(pts):
+        f = _planar_face_from_pts(pts, tol)
+        if f: faces.append(f)
+
+    # NUR die Outer-Schraegflaechen — die Dicke wird per CreateOffsetBrep
+    # senkrecht zur jeweiligen Flaeche nach innen extrudiert.
+    if long_axis_is_01:
+        if is_square:
+            apex_o = ridge_a
+            add_face([c0, c1, apex_o, c0])
+            add_face([c1, c2, apex_o, c1])
+            add_face([c2, c3, apex_o, c2])
+            add_face([c3, c0, apex_o, c3])
+        else:
+            add_face([c0, c1, ridge_b, ridge_a, c0])
+            add_face([c2, c3, ridge_a, ridge_b, c2])
+            add_face([c1, c2, ridge_b, c1])
+            add_face([c3, c0, ridge_a, c3])
+    else:
+        if is_square:
+            apex_o = ridge_a
+            add_face([c0, c1, apex_o, c0])
+            add_face([c1, c2, apex_o, c1])
+            add_face([c2, c3, apex_o, c2])
+            add_face([c3, c0, apex_o, c3])
+        else:
+            add_face([c1, c2, ridge_b, ridge_a, c1])
+            add_face([c3, c0, ridge_a, ridge_b, c3])
+            add_face([c0, c1, ridge_a, c0])
+            add_face([c2, c3, ridge_b, c2])
+
+    top_brep = _join_open_shell(faces, tol)
+    return _thicken_roof_inward(top_brep, dicke, tol)
+
+
+def _make_mansardendach_brep(outline_curve, dicke, base_height,
+                              slope_upper_deg, slope_lower_deg, knick_h,
+                              variante="walm"):
+    """Dispatcher: 'walm' = 4-seitig mit Knick rundum (Mansarden-Walm).
+    'giebel' = klassisches Mansardendach mit vertikalen Giebel-Pentagonen
+    an den Schmalseiten (DACH-Region-Standard).
+    'walm_giebel' = unten Walm (Knick rundum), oben Giebel (First ueber
+    voller Laenge, vertikale Dreieck-Giebel an den Schmalseiten)."""
+    if variante == "giebel":
+        return _make_mansardendach_giebel(outline_curve, dicke, base_height,
+                                           slope_upper_deg, slope_lower_deg, knick_h)
+    if variante == "walm_giebel":
+        return _make_mansardendach_walm_giebel(outline_curve, dicke, base_height,
+                                                slope_upper_deg, slope_lower_deg, knick_h)
+    return _make_mansardendach_walm(outline_curve, dicke, base_height,
+                                     slope_upper_deg, slope_lower_deg, knick_h)
+
+
+def _make_mansardendach_giebel(outline_curve, dicke, base_height,
+                                slope_upper_deg, slope_lower_deg, knick_h):
+    """Klassisches Mansardendach: Knick nur auf den 2 langen Seiten, an den
+    Schmalseiten vertikale Giebelwand-Pentagone bis hoch zum First."""
+    import math
+    pts = _outline_points_xy(outline_curve)
+    if len(pts) != 4: return None
+    e01 = pts[0].DistanceTo(pts[1])
+    e12 = pts[1].DistanceTo(pts[2])
+    # Corners so umsortieren dass corners[0]→corners[1] die erste lange Kante ist
+    if e01 >= e12:
+        corners = [pts[0], pts[1], pts[2], pts[3]]
+        short_len = e12
+    else:
+        corners = [pts[1], pts[2], pts[3], pts[0]]
+        short_len = e01
+    half_short = short_len * 0.5
+    # Long-Edge-Richtung + Inward-Perpendicular (zeigt vom 1. langen Edge weg)
+    lv = rg.Vector3d(corners[1].X - corners[0].X, corners[1].Y - corners[0].Y, 0)
+    if lv.Length < 1e-9: return None
+    lv.Unitize()
+    perp = rg.Vector3d(-lv.Y, lv.X, 0)
+    mid_first = rg.Point3d((corners[0].X + corners[1].X) * 0.5,
+                            (corners[0].Y + corners[1].Y) * 0.5, 0)
+    mid_opp   = rg.Point3d((corners[2].X + corners[3].X) * 0.5,
+                            (corners[2].Y + corners[3].Y) * 0.5, 0)
+    if (mid_opp.X - mid_first.X) * perp.X + (mid_opp.Y - mid_first.Y) * perp.Y < 0:
+        perp = -perp
+
+    tan_lower = math.tan(math.radians(float(slope_lower_deg)))
+    tan_upper = math.tan(math.radians(float(slope_upper_deg)))
+    if tan_lower <= 1e-9:
+        return _make_walmdach_brep(outline_curve, dicke, base_height, slope_upper_deg)
+    knick_inset = float(knick_h) / tan_lower
+    if knick_inset >= half_short - 1e-6:
+        return _make_walmdach_brep(outline_curve, dicke, base_height, slope_lower_deg)
+    remaining = half_short - knick_inset
+    ridge_above_knick = remaining * tan_upper
+    total_h = float(knick_h) + ridge_above_knick
+
+    # Eave-Ecken
+    c = [rg.Point3d(p.X, p.Y, base_height) for p in corners]
+    # Knick-Ecken: corners[0,1] auf 1. langer Kante → Knick in +perp;
+    # corners[2,3] auf gegenueberliegender Kante → Knick in -perp.
+    # WICHTIG: in der GIEBEL-Variante bleiben die Knick-Ecken auf demselben
+    # X (entlang langer Achse) wie die zugehoerige Eave-Ecke — KEIN diagonaler
+    # Inset wie bei Walm. So liegen sie in der Vertikal-Ebene der Gable.
+    k = [
+        rg.Point3d(c[0].X + perp.X * knick_inset, c[0].Y + perp.Y * knick_inset, base_height + knick_h),
+        rg.Point3d(c[1].X + perp.X * knick_inset, c[1].Y + perp.Y * knick_inset, base_height + knick_h),
+        rg.Point3d(c[2].X - perp.X * knick_inset, c[2].Y - perp.Y * knick_inset, base_height + knick_h),
+        rg.Point3d(c[3].X - perp.X * knick_inset, c[3].Y - perp.Y * knick_inset, base_height + knick_h),
+    ]
+    # First-Endpunkte: Mittelpunkte der Gable-Kanten — diese liegen
+    # geometrisch BEREITS auf der Centerline der Langachse. Kein zusaetzlicher
+    # Inset noetig (der war im alten Code falsch — verschob den First auf
+    # einen Eckpunkt und stauchte die Gable-Pentagone).
+    ridge_w = rg.Point3d((c[3].X + c[0].X) * 0.5, (c[3].Y + c[0].Y) * 0.5,
+                          base_height + total_h)
+    ridge_e = rg.Point3d((c[1].X + c[2].X) * 0.5, (c[1].Y + c[2].Y) * 0.5,
+                          base_height + total_h)
+
+    tol = 0.001
+    faces = []
+    def add(pl):
+        f = _planar_face_from_pts(pl, tol)
+        if f: faces.append(f)
+
+    # NUR Outer-Schale (4 Dachflaechen + 2 vertikale Giebel-Pentagone).
+    # Dicke wird per CreateOffsetBrep senkrecht zur jeweiligen Flaeche
+    # nach innen extrudiert.
+    add([c[0], c[1], k[1], k[0], c[0]])
+    add([c[2], c[3], k[3], k[2], c[2]])
+    add([k[0], k[1], ridge_e, ridge_w, k[0]])
+    add([k[2], k[3], ridge_w, ridge_e, k[2]])
+    add([c[0], c[3], k[3], ridge_w, k[0], c[0]])  # West-Giebel
+    add([c[1], c[2], k[2], ridge_e, k[1], c[1]])  # Ost-Giebel
+
+    top_brep = _join_open_shell(faces, tol)
+    return _thicken_roof_inward(top_brep, dicke, tol)
+
+
+def _make_mansardendach_walm(outline_curve, dicke, base_height,
+                              slope_upper_deg, slope_lower_deg, knick_h):
+    """Mansardendach (4-seitig, Walm-Mansarde): 4 Eaves mit Knick rundum,
+    unten steile Flaeche, oben flachere Walm-Kappe. Erfordert 4-Punkt-Outline."""
+    import math
+    pts = _outline_points_xy(outline_curve)
+    if len(pts) != 3 + 1 and len(pts) != 4: return None
+    if len(pts) != 4: return None
+
+    e01 = pts[0].DistanceTo(pts[1])
+    e12 = pts[1].DistanceTo(pts[2])
+    long_axis_is_01 = e01 >= e12
+    short_len = min(e01, e12)
+    half_short = short_len * 0.5
+
+    tan_lower = math.tan(math.radians(float(slope_lower_deg)))
+    tan_upper = math.tan(math.radians(float(slope_upper_deg)))
+    knick_h = float(knick_h)
+    if tan_lower <= 1e-9:
+        return _make_walmdach_brep(outline_curve, dicke, base_height, slope_upper_deg)
+    knick_inset = knick_h / tan_lower
+    if knick_inset >= half_short - 1e-6:
+        # Knick zu hoch → degeneriert zu reinem Walm
+        return _make_walmdach_brep(outline_curve, dicke, base_height, slope_lower_deg)
+    remaining = half_short - knick_inset
+    ridge_above_knick = remaining * tan_upper
+    total_height = knick_h + ridge_above_knick
+
+    # Eave-Ecken auf base_height
+    c0 = rg.Point3d(pts[0].X, pts[0].Y, base_height)
+    c1 = rg.Point3d(pts[1].X, pts[1].Y, base_height)
+    c2 = rg.Point3d(pts[2].X, pts[2].Y, base_height)
+    c3 = rg.Point3d(pts[3].X, pts[3].Y, base_height)
+    # Knick-Ecken: nach innen verschoben (Diagonal-Approximation fuer Rechteck)
+    cx = (pts[0].X + pts[1].X + pts[2].X + pts[3].X) * 0.25
+    cy = (pts[0].Y + pts[1].Y + pts[2].Y + pts[3].Y) * 0.25
+    def inset_corner(corner):
+        dx = cx - corner.X; dy = cy - corner.Y
+        L = (dx * dx + dy * dy) ** 0.5
+        if L < 1e-9:
+            return rg.Point3d(corner.X, corner.Y, base_height + knick_h)
+        # Diagonale Verschiebung = knick_inset / cos(45°) ≈ knick_inset * sqrt(2)
+        # fuer ein achsenaligned Rechteck; sonst Approximation.
+        f = (knick_inset * 1.41421356) / L
+        return rg.Point3d(corner.X + dx * f, corner.Y + dy * f,
+                          base_height + knick_h)
+    k0 = inset_corner(pts[0])
+    k1 = inset_corner(pts[1])
+    k2 = inset_corner(pts[2])
+    k3 = inset_corner(pts[3])
+
+    # Ridge entlang langer Achse — MIT Hip-Inset, damit oben drauf ein
+    # echtes Walmdach steht (nicht ein Sattel mit degenerierten
+    # Walm-Dreiecken). Inset-Distanz = `remaining` = halbe kurze Seite
+    # des Knick-Polygons. So treffen sich die Walm-Hipflaechen unter dem
+    # gleichen Neigungswinkel wie die Trapezflaechen.
+    if long_axis_is_01:
+        long_dir = rg.Vector3d(pts[1].X - pts[0].X, pts[1].Y - pts[0].Y, 0)
+    else:
+        long_dir = rg.Vector3d(pts[2].X - pts[1].X, pts[2].Y - pts[1].Y, 0)
+    long_dir.Z = 0
+    long_dir.Unitize()
+    if long_axis_is_01:
+        mid_west = rg.Point3d((k3.X + k0.X) * 0.5, (k3.Y + k0.Y) * 0.5, 0)
+        mid_east = rg.Point3d((k1.X + k2.X) * 0.5, (k1.Y + k2.Y) * 0.5, 0)
+        ra = rg.Point3d(mid_west.X + long_dir.X * remaining,
+                         mid_west.Y + long_dir.Y * remaining,
+                         base_height + total_height)
+        rb = rg.Point3d(mid_east.X - long_dir.X * remaining,
+                         mid_east.Y - long_dir.Y * remaining,
+                         base_height + total_height)
+    else:
+        mid_south = rg.Point3d((k0.X + k1.X) * 0.5, (k0.Y + k1.Y) * 0.5, 0)
+        mid_north = rg.Point3d((k2.X + k3.X) * 0.5, (k2.Y + k3.Y) * 0.5, 0)
+        ra = rg.Point3d(mid_south.X + long_dir.X * remaining,
+                         mid_south.Y + long_dir.Y * remaining,
+                         base_height + total_height)
+        rb = rg.Point3d(mid_north.X - long_dir.X * remaining,
+                         mid_north.Y - long_dir.Y * remaining,
+                         base_height + total_height)
+    is_square = abs(ra.DistanceTo(rb)) < 1e-6  # → Zelt-Mansarde
+
+    tol = 0.001
+    faces = []
+    def add(pts_list):
+        f = _planar_face_from_pts(pts_list, tol)
+        if f: faces.append(f)
+
+    # NUR Outer-Schale — Dicke wird via CreateOffsetBrep senkrecht zur
+    # jeweiligen Flaeche nach innen extrudiert.
+    # 1) Untere steile Mansarde-Flaechen (4)
+    add([c0, c1, k1, k0, c0])
+    add([c1, c2, k2, k1, c1])
+    add([c2, c3, k3, k2, c2])
+    add([c3, c0, k0, k3, c3])
+
+    # 2) Obere flachere Walm-Kappe
+    if long_axis_is_01:
+        if is_square:
+            apex_o = ra
+            for tri in ((k0, k1, apex_o), (k1, k2, apex_o),
+                         (k2, k3, apex_o), (k3, k0, apex_o)):
+                add([tri[0], tri[1], tri[2], tri[0]])
+        else:
+            add([k0, k1, rb, ra, k0])
+            add([k2, k3, ra, rb, k2])
+            add([k1, k2, rb, k1])
+            add([k3, k0, ra, k3])
+    else:
+        if is_square:
+            apex_o = ra
+            for tri in ((k0, k1, apex_o), (k1, k2, apex_o),
+                         (k2, k3, apex_o), (k3, k0, apex_o)):
+                add([tri[0], tri[1], tri[2], tri[0]])
+        else:
+            add([k1, k2, rb, ra, k1])
+            add([k3, k0, ra, rb, k3])
+            add([k0, k1, ra, k0])
+            add([k2, k3, rb, k2])
+
+    top_brep = _join_open_shell(faces, tol)
+    return _thicken_roof_inward(top_brep, dicke, tol)
+
+
+def _make_mansardendach_walm_giebel(outline_curve, dicke, base_height,
+                                     slope_upper_deg, slope_lower_deg, knick_h):
+    """Mansardendach Walm-Giebel: unten Walm (Knick rundum, 4 steile
+    Mansarde-Flaechen), oben Giebel (First ueber voller Laenge, 2 obere
+    Dachflaechen entlang der langen Seiten, vertikale Dreieck-Giebel an
+    den Schmalseiten). Erfordert Rechteck-Outline."""
+    import math
+    pts = _outline_points_xy(outline_curve)
+    if len(pts) != 4: return None
+
+    e01 = pts[0].DistanceTo(pts[1])
+    e12 = pts[1].DistanceTo(pts[2])
+    long_axis_is_01 = e01 >= e12
+    short_len = min(e01, e12)
+    half_short = short_len * 0.5
+
+    tan_lower = math.tan(math.radians(float(slope_lower_deg)))
+    tan_upper = math.tan(math.radians(float(slope_upper_deg)))
+    knick_h = float(knick_h)
+    if tan_lower <= 1e-9:
+        # Untere Mansarde degeneriert → reines Satteldach mit slope_upper
+        return _make_satteldach_brep(outline_curve, dicke, base_height,
+                                      slope_upper_deg)
+    knick_inset = knick_h / tan_lower
+    if knick_inset >= half_short - 1e-6:
+        # Knick zu hoch → unten ginge bis zur Spitze, oben kein Platz mehr
+        return _make_walmdach_brep(outline_curve, dicke, base_height,
+                                    slope_lower_deg)
+    remaining = half_short - knick_inset
+    ridge_above_knick = remaining * tan_upper
+    total_height = knick_h + ridge_above_knick
+
+    # Eave-Ecken
+    c0 = rg.Point3d(pts[0].X, pts[0].Y, base_height)
+    c1 = rg.Point3d(pts[1].X, pts[1].Y, base_height)
+    c2 = rg.Point3d(pts[2].X, pts[2].Y, base_height)
+    c3 = rg.Point3d(pts[3].X, pts[3].Y, base_height)
+    cx = (pts[0].X + pts[1].X + pts[2].X + pts[3].X) * 0.25
+    cy = (pts[0].Y + pts[1].Y + pts[2].Y + pts[3].Y) * 0.25
+    def inset_corner(corner):
+        dx = cx - corner.X; dy = cy - corner.Y
+        L = (dx * dx + dy * dy) ** 0.5
+        if L < 1e-9:
+            return rg.Point3d(corner.X, corner.Y, base_height + knick_h)
+        f = (knick_inset * 1.41421356) / L
+        return rg.Point3d(corner.X + dx * f, corner.Y + dy * f,
+                          base_height + knick_h)
+    k0 = inset_corner(pts[0])
+    k1 = inset_corner(pts[1])
+    k2 = inset_corner(pts[2])
+    k3 = inset_corner(pts[3])
+
+    # First: ueber voller Laenge des Knick-Polygons (KEIN Hip-Inset → Giebel oben)
+    if long_axis_is_01:
+        # Lange Seiten: k0-k1 und k2-k3 ; Schmalseiten: k1-k2 (Ost), k3-k0 (West)
+        ra = rg.Point3d((k3.X + k0.X) * 0.5, (k3.Y + k0.Y) * 0.5,
+                         base_height + total_height)  # West
+        rb = rg.Point3d((k1.X + k2.X) * 0.5, (k1.Y + k2.Y) * 0.5,
+                         base_height + total_height)  # Ost
+    else:
+        # Lange Seiten: k1-k2 und k3-k0 ; Schmalseiten: k0-k1 (Sued), k2-k3 (Nord)
+        ra = rg.Point3d((k0.X + k1.X) * 0.5, (k0.Y + k1.Y) * 0.5,
+                         base_height + total_height)  # Sued
+        rb = rg.Point3d((k2.X + k3.X) * 0.5, (k2.Y + k3.Y) * 0.5,
+                         base_height + total_height)  # Nord
+
+    tol = 0.001
+    faces = []
+    def add(pts_list):
+        f = _planar_face_from_pts(pts_list, tol)
+        if f: faces.append(f)
+
+    # NUR Outer-Schale — Dicke wird via CreateOffsetBrep senkrecht zur
+    # jeweiligen Flaeche nach innen extrudiert.
+    # 1) Untere steile Mansarde-Flaechen (4)
+    add([c0, c1, k1, k0, c0])
+    add([c1, c2, k2, k1, c1])
+    add([c2, c3, k3, k2, c2])
+    add([c3, c0, k0, k3, c3])
+
+    # 2) Obere Giebel-Section: 2 Sattel-Flaechen + 2 vertikale Dreieck-Giebel
+    if long_axis_is_01:
+        add([k0, k1, rb, ra, k0])
+        add([k2, k3, ra, rb, k2])
+        add([k3, k0, ra, k3])
+        add([k1, k2, rb, k1])
+    else:
+        add([k1, k2, rb, ra, k1])
+        add([k3, k0, ra, rb, k3])
+        add([k0, k1, ra, k0])
+        add([k2, k3, rb, k2])
+
+    top_brep = _join_open_shell(faces, tol)
+    return _thicken_roof_inward(top_brep, dicke, tol)
+
+
+def _planar_face_from_pts(pts, tol):
+    """Erzeugt eine planare Brep-Flaeche aus einer Liste von Eckpunkten."""
+    try:
+        curve = rg.PolylineCurve(rg.Polyline(pts))
+        result = rg.Brep.CreatePlanarBreps([curve], tol)
+        if result and len(result) > 0:
+            return result[0]
+    except Exception:
+        pass
+    return None
+
+
+# --- Decken-Volumen ---------------------------------------------------------
+
+def _make_decke_volume(outline_curve, dicke, uk, ok):
+    """Decke = Extrusion einer geschlossenen planaren Curve von UK bis OK."""
+    if not isinstance(outline_curve, rg.Curve): return None
+    if not outline_curve.IsClosed: return None
+    height = float(ok) - float(uk)
+    if height <= 0: return None
+    profile = outline_curve.DuplicateCurve()
+    if abs(uk) > 1e-9:
+        profile.Transform(rg.Transform.Translation(0, 0, uk))
+    extrusion = rg.Extrusion.Create(profile, height, True)
+    if extrusion is None: return None
+    return extrusion.ToBrep()
+
+
+# --- Treppen-Volumen --------------------------------------------------------
+
+def _treppe_profile_2d(N, S, A, uk, modus, lauf_d):
+    """Liefert das 2D-Seitenprofil der Treppe als Liste von (x, z)-Tupeln.
+
+    Konvention: N Steigungen + N Auftritte (oberster Tritt gehoert zur
+    Treppe — fuegt sich sauber in die obere Decke ein, ohne freistehende
+    Setzstufe oben). Lauflaenge = N*A, Hoehe = N*S.
+
+    Modi:
+      'massiv' — Block bis zum Boden (uk)
+      'flach'  — schraege Plattenunterseite parallel zur Steigungslinie,
+                 Plattendicke lauf_d vertikal gemessen
+      'plattenrand' — Faltwerk-Treppe mit echten Vertikalen unter den
+                 Setzstufen (Konvex-Ecken truncated, Konkav-Ecken haben
+                 zusaetzliche L-Verlaengerung — Slab folgt dem oberen
+                 Profil parallel)
+    """
+    Z0 = float(uk)
+    d = float(lauf_d)
+
+    # Oberes Profil: N Risers + N Treads (der letzte Tritt ist enthalten)
+    top = [(0.0, Z0)]
+    for k in range(N):
+        top.append((k * A,        Z0 + (k + 1) * S))   # top of riser k
+        top.append(((k + 1) * A,  Z0 + (k + 1) * S))   # end of tread k
+    # top endet bei (N*A, Z0 + N*S)
+    x_end = N * A
+    z_top = Z0 + N * S
+
+    if modus == "massiv":
+        return top + [(x_end, Z0), (0.0, Z0)]
+
+    if modus == "flach":
+        # Soffit parallel zur Steigungslinie (von (0,Z0) bis (NA, NS+Z0)),
+        # vertikal um lauf_d nach unten versetzt.
+        return top + [(x_end, z_top - d),
+                       (0.0, Z0 - d),
+                       (0.0, Z0)]
+
+    # plattenrand: Faltwerk-Treppe. Innere (Soffit-) Punkte mit Konvex/
+    # Konkav-Handling, sodass die Vertikalen unter den Setzstufen ihre
+    # eigene D-Tiefe haben (kein Klotz-Look mit floatenden Tritten).
+    inner = []
+    inner.append((d, Z0))  # Start: rechts vom Riser-Anfang (Konvex-Ecke (0,Z0))
+    for k in range(N):
+        # Konvex-Ecke (k*A, Z0+(k+1)*S): Top-Eck rechts oben des Risers
+        # Innere Eck-Punkt bei (k*A + D, (k+1)S - D)
+        inner.append((k * A + d, Z0 + (k + 1) * S - d))
+        # Konkav-Ecke ((k+1)*A, Z0+(k+1)*S): Tread-Ende, naechster Riser
+        # geht hoch. Extra L-Verlaengerung — ausser beim allerletzten Schritt,
+        # wo der Tritt zur Decke laeuft.
+        if k < N - 1:
+            inner.append(((k + 1) * A,     Z0 + (k + 1) * S - d))
+            inner.append(((k + 1) * A + d, Z0 + (k + 1) * S - d))
+        else:
+            inner.append((x_end, Z0 + N * S - d))
+    # Schliessen: Top-right Drop + Inner reversed + zurueck zum Start
+    # inner letzter Punkt ist (x_end, z_top - d). Top-right ist (x_end, z_top).
+    inner_rev = list(reversed(inner))  # endet bei (d, Z0)
+    return top + inner_rev + [(0.0, Z0)]
+
+
+def _wendel_radii(r_click, breite, referenz):
+    """Berechnet (r_inner, r_outer) der Wendeltreppe basierend auf dem
+    Klick-Radius (= Lauflinien-Position) und der Referenz.
+    Konvention:
+      'links'  → Lauflinie auf AUSSEN-Kante (body extends inward)
+      'mid'    → Lauflinie mittig
+      'rechts' → Lauflinie auf INNEN-Kante (body extends outward)
+
+    r_inner wird absolut auf >= 0.01m geclampt. Bei r_inner < 0.05m
+    schaltet die Geometrie auf Cone-Wedge um (Innenkante kollabiert
+    zur Mittelachse — Spindeltreppe-Style)."""
+    half_b = float(breite) * 0.5
+    MIN_R = 0.01
+    if referenz == "links":
+        return (max(MIN_R, r_click - float(breite)), r_click)
+    if referenz == "rechts":
+        return (max(MIN_R, r_click), r_click + float(breite))
+    return (max(MIN_R, r_click - half_b), r_click + half_b)
+
+
+def _wendel_sweep(center, p_start, p_end):
+    """Liefert (alpha_start, delta) — Startwinkel und signed Sweep-Winkel
+    in Rad. Sweep-Richtung kommt aus dem Cross-Product start vs. end."""
+    import math
+    sx, sy = p_start.X - center.X, p_start.Y - center.Y
+    ex, ey = p_end.X - center.X, p_end.Y - center.Y
+    a_start = math.atan2(sy, sx)
+    a_end_raw = math.atan2(ey, ex)
+    cross_z = sx * ey - sy * ex
+    sweep_sign = 1.0 if cross_z >= 0 else -1.0
+    delta = a_end_raw - a_start
+    if sweep_sign > 0:
+        while delta < 0: delta += 2.0 * math.pi
+    else:
+        while delta > 0: delta -= 2.0 * math.pi
+    return a_start, delta
+
+
+def _wendel_wedge_cone_brep(center, r_out, a0, a1, top_z,
+                                bot_z_a0, bot_z_a1, tol=0.001):
+    """Cone-Wedge fuer Spindeltreppen: innere Kante kollabiert zur
+    Mittelachse. 5 Vertices (t_c, t_o0, t_o1, b_c, b_o0, b_o1) und
+    5-6 Faces (Top-Dreieck, Bottom-Dreieck, Aussen-Quad, 2 Radial-
+    Quads). Vermeidet degenerierte Innen-Faces bei r_inner ≈ 0."""
+    import math
+    cx, cy = center.X, center.Y
+    t_c = rg.Point3d(cx, cy, top_z)
+    t_o0 = rg.Point3d(cx + r_out * math.cos(a0), cy + r_out * math.sin(a0), top_z)
+    t_o1 = rg.Point3d(cx + r_out * math.cos(a1), cy + r_out * math.sin(a1), top_z)
+    b_o0 = rg.Point3d(cx + r_out * math.cos(a0), cy + r_out * math.sin(a0), bot_z_a0)
+    b_o1 = rg.Point3d(cx + r_out * math.cos(a1), cy + r_out * math.sin(a1), bot_z_a1)
+    # Bottom-Center: bei flach-Modus = Mittel der beiden bot_z, sonst gleich.
+    b_c_z = (bot_z_a0 + bot_z_a1) * 0.5
+    b_c = rg.Point3d(cx, cy, b_c_z)
+
+    da = a1 - a0
+    flat_bot = abs(bot_z_a0 - bot_z_a1) < 1e-6
+    faces = []
+    # Top Dreieck — CCW von oben
+    if da > 0:
+        faces.append([t_c, t_o0, t_o1, t_c])
+    else:
+        faces.append([t_c, t_o1, t_o0, t_c])
+    # Bottom Dreieck — reversed
+    if da > 0:
+        faces.append([b_c, b_o1, b_o0, b_c])
+    else:
+        faces.append([b_c, b_o0, b_o1, b_c])
+    # Aussen-Seite (planar bei flat_bot, sonst trianguliert)
+    if flat_bot:
+        faces.append([t_o0, b_o0, b_o1, t_o1, t_o0])
+    else:
+        faces.append([t_o0, b_o0, b_o1, t_o0])
+        faces.append([t_o0, b_o1, t_o1, t_o0])
+    # Radiale Seiten (immer planar — alle in radial Ebene)
+    faces.append([t_c, t_o0, b_o0, b_c, t_c])
+    faces.append([t_c, b_c, b_o1, t_o1, t_c])
+
+    breps = []
+    for face_pts in faces:
+        try:
+            f = _planar_face_from_pts(face_pts, tol)
+            if f: breps.append(f)
+        except Exception: pass
+    if not breps: return None
+    try:
+        joined = rg.Brep.JoinBreps(breps, tol)
+        if joined and len(joined) > 0: return joined[0]
+    except Exception: pass
+    return breps[0] if breps else None
+
+
+def _wendel_wedge_brep(center, r_in, r_out, a0, a1, top_z,
+                          bot_z_a0, bot_z_a1, tol=0.001):
+    """Bauet einen Wendel-Tritt als 8-Vertex-Polyeder:
+    - Flat top bei top_z
+    - Bottom Z-Werte koennen pro Winkel-Seite differieren (flach-Modus:
+      schraeg parallel zur Steigungslinie; plattenrand-Modus: flat).
+    - 4 Seitenflaechen (innen, aussen, radial a0, radial a1).
+
+    Bei r_in < 0.05m → Cone-Wedge (Spindeltreppe-Style) — verhindert
+    degenerierte Geometrie an der Mittelachse."""
+    import math
+    if r_in < 0.05:
+        return _wendel_wedge_cone_brep(center, r_out, a0, a1, top_z,
+                                          bot_z_a0, bot_z_a1, tol)
+    cx, cy = center.X, center.Y
+    t_i0 = rg.Point3d(cx + r_in  * math.cos(a0), cy + r_in  * math.sin(a0), top_z)
+    t_o0 = rg.Point3d(cx + r_out * math.cos(a0), cy + r_out * math.sin(a0), top_z)
+    t_i1 = rg.Point3d(cx + r_in  * math.cos(a1), cy + r_in  * math.sin(a1), top_z)
+    t_o1 = rg.Point3d(cx + r_out * math.cos(a1), cy + r_out * math.sin(a1), top_z)
+    b_i0 = rg.Point3d(cx + r_in  * math.cos(a0), cy + r_in  * math.sin(a0), bot_z_a0)
+    b_o0 = rg.Point3d(cx + r_out * math.cos(a0), cy + r_out * math.sin(a0), bot_z_a0)
+    b_i1 = rg.Point3d(cx + r_in  * math.cos(a1), cy + r_in  * math.sin(a1), bot_z_a1)
+    b_o1 = rg.Point3d(cx + r_out * math.cos(a1), cy + r_out * math.sin(a1), bot_z_a1)
+
+    da = a1 - a0
+    flat_bot = abs(bot_z_a0 - bot_z_a1) < 1e-6
+    faces = []
+    # Top — planar
+    if da > 0:
+        faces.append([t_i0, t_o0, t_o1, t_i1, t_i0])
+    else:
+        faces.append([t_i0, t_i1, t_o1, t_o0, t_i0])
+    # Bottom — planar wenn flat, sonst in 2 Dreiecke teilen
+    if da > 0:
+        bot_order = [b_i0, b_i1, b_o1, b_o0]
+    else:
+        bot_order = [b_i0, b_o0, b_o1, b_i1]
+    if flat_bot:
+        faces.append(bot_order + [bot_order[0]])
+    else:
+        faces.append([bot_order[0], bot_order[1], bot_order[2], bot_order[0]])
+        faces.append([bot_order[0], bot_order[2], bot_order[3], bot_order[0]])
+    # Inner side: planar wenn flat, sonst Dreiecke
+    if flat_bot:
+        faces.append([t_i0, t_i1, b_i1, b_i0, t_i0])
+    else:
+        faces.append([t_i0, t_i1, b_i1, t_i0])
+        faces.append([t_i0, b_i1, b_i0, t_i0])
+    # Outer side: planar wenn flat, sonst Dreiecke
+    if flat_bot:
+        faces.append([t_o0, b_o0, b_o1, t_o1, t_o0])
+    else:
+        faces.append([t_o0, b_o0, b_o1, t_o0])
+        faces.append([t_o0, b_o1, t_o1, t_o0])
+    # Radiale Seiten — immer planar (alle Punkte auf derselben Radial-Ebene)
+    faces.append([t_i0, t_o0, b_o0, b_i0, t_i0])
+    faces.append([t_i1, b_i1, b_o1, t_o1, t_i1])
+
+    breps = []
+    for face_pts in faces:
+        try:
+            f = _planar_face_from_pts(face_pts, tol)
+            if f: breps.append(f)
+        except Exception: pass
+    if not breps: return None
+    try:
+        joined = rg.Brep.JoinBreps(breps, tol)
+        if joined and len(joined) > 0:
+            return joined[0]
+    except Exception as ex:
+        print("[ELEMENTE] wendel wedge join:", ex)
+    return breps[0] if breps else None
+
+
+def _wendel_sweep_range(r_lauf, breite, referenz, n_stufen, H, soll):
+    """Liefert (sweep_min, sweep_max) in Radian — gueltiger Drehwinkel.
+    Erzwingt Soll-Auftritt-Range UEBER DIE GANZE TRITTBREITE (von
+    r_inner bis r_outer), nicht nur an der Lauflinie:
+      A = r * (sweep/N)
+      A_inner = r_inner * (sweep/N) >= a_lo  →  sweep >= N*a_lo/r_inner
+      A_outer = r_outer * (sweep/N) <= a_hi  →  sweep <= N*a_hi/r_outer
+
+    So liegen beide Enden eines Tritts im Soll. Wenn der Bereich
+    widerspruechlich ist (zu breite Treppe fuer kleinen Radius), fallback
+    auf Lauflinie-basiertes Clamping."""
+    r_inner, r_outer = _wendel_radii(r_lauf, breite, referenz)
+    n = max(1, int(n_stufen))
+    s = float(H) / n
+    a_lo, a_hi = 0.05, 2.0
+    if soll.get("sa", [0, 0, False])[2]:
+        a_lo = max(a_lo, float(soll["sa"][0]) - 2.0 * s)
+        a_hi = min(a_hi, float(soll["sa"][1]) - 2.0 * s)
+    if soll.get("a", [0, 0, False])[2]:
+        a_lo = max(a_lo, float(soll["a"][0]))
+        a_hi = min(a_hi, float(soll["a"][1]))
+    if a_lo > a_hi:
+        mid = (a_lo + a_hi) * 0.5
+        a_lo = a_hi = mid
+    ri = max(0.01, float(r_inner))
+    ro = max(0.01, float(r_outer))
+    sweep_lo = n * a_lo / ri  # tightest lower (kleinster Radius)
+    sweep_hi = n * a_hi / ro  # tightest upper (groesster Radius)
+    if sweep_lo > sweep_hi:
+        # Range nicht erfuellbar (zu breite Treppe oder zu enger Radius)
+        # → Fallback: nur an der Lauflinie clampen, der User sieht im Label
+        # dass A_inner/A_outer ausserhalb Soll sind.
+        rl = max(0.01, float(r_lauf))
+        sweep_lo = n * a_lo / rl
+        sweep_hi = n * a_hi / rl
+    return (sweep_lo, sweep_hi)
+
+
+def _make_treppe_wendel_volume(axis_polyline, breite, referenz, n_stufen,
+                                  uk, ok, modus="flach", lauf_d=0.18):
+    """Wendeltreppe aus 3-Punkt-Polylinie [center, start, end].
+
+    Bauet N Stufen als gestapelte trapezfoermige Keile um die Mittelachse.
+    Lauflinien-Radius = Distanz center→start. Sweep-Winkel und -Richtung
+    werden aus der End-Position abgeleitet (Cross-Product gibt Drehsinn,
+    Winkel ist die natuerliche Strecke in dieser Richtung).
+
+    Modus:
+      'massiv' — jeder Keil reicht von UK bis Step-Top (Wedding-Cake)
+      'flach' / 'plattenrand' — jeder Keil ist nur lauf_d dick (floating
+      steps); bei Wendel keine echte Helix-Soffit fuer Entwurfs-Niveau."""
+    import math
+    if not isinstance(axis_polyline, rg.Curve): return None
+    try:
+        ok_pl, poly = axis_polyline.TryGetPolyline()
+    except Exception: return None
+    if not ok_pl or poly is None or poly.Count != 3: return None
+    center = rg.Point3d(poly[0].X, poly[0].Y, 0)
+    p_start = rg.Point3d(poly[1].X, poly[1].Y, 0)
+    p_end = rg.Point3d(poly[2].X, poly[2].Y, 0)
+    r_click = math.sqrt((p_start.X - center.X) ** 2 +
+                         (p_start.Y - center.Y) ** 2)
+    if r_click < 0.2: return None
+    r_inner, r_outer = _wendel_radii(r_click, breite, referenz)
+    if r_outer - r_inner < 0.05: return None
+    a_start, delta = _wendel_sweep(center, p_start, p_end)
+    if abs(delta) < 0.05: return None
+    H = float(ok) - float(uk)
+    if H <= 1e-6: return None
+    N = max(2, int(n_stufen))
+    S = H / N
+    da = delta / N
+
+    parts = []
+    for k in range(N):
+        a0 = a_start + k * da
+        a1 = a_start + (k + 1) * da
+        z_top = float(uk) + (k + 1) * S
+        if modus == "massiv":
+            # Wedding-Cake: Block bis zum Boden, einfache Extrusion
+            z_bot = float(uk)
+            c0i = (center.X + r_inner * math.cos(a0), center.Y + r_inner * math.sin(a0))
+            c0o = (center.X + r_outer * math.cos(a0), center.Y + r_outer * math.sin(a0))
+            c1i = (center.X + r_inner * math.cos(a1), center.Y + r_inner * math.sin(a1))
+            c1o = (center.X + r_outer * math.cos(a1), center.Y + r_outer * math.sin(a1))
+            if da > 0: corners = [c0i, c0o, c1o, c1i]
+            else:      corners = [c0i, c1i, c1o, c0o]
+            pts = [rg.Point3d(x, y, z_bot) for (x, y) in corners]
+            pts.append(pts[0])
+            try:
+                crv = rg.PolylineCurve(rg.Polyline(pts))
+                ext = rg.Extrusion.Create(crv, z_top - z_bot, True)
+                if ext is not None: parts.append(ext.ToBrep())
+            except Exception as ex:
+                print("[ELEMENTE] Wendel massiv step:", ex)
+        elif modus == "plattenrand":
+            # Gestuft: flat bottom bei z_top - D unter jedem Tritt.
+            # Adjacent Wedges haben unterschiedliche Bottom-Z → visible
+            # "Schritt" auf der Unterseite (= Faltwerk-Look).
+            bot = z_top - float(lauf_d)
+            wedge = _wendel_wedge_brep(center, r_inner, r_outer,
+                                          a0, a1, z_top, bot, bot)
+            if wedge is not None: parts.append(wedge)
+        else:  # flach
+            # Helikoide Unterseite: Bottom verlaeuft schraeg parallel zur
+            # Steigungslinie. Bei a0 bei (uk + k*S - D), bei a1 bei
+            # (uk + (k+1)*S - D). Adjacent Wedges meet seamlessly an der
+            # gemeinsamen Kante → kontinuierlicher Spiral-Slab.
+            bot_a0 = float(uk) + k * S - float(lauf_d)
+            bot_a1 = float(uk) + (k + 1) * S - float(lauf_d)
+            wedge = _wendel_wedge_brep(center, r_inner, r_outer,
+                                          a0, a1, z_top, bot_a0, bot_a1)
+            if wedge is not None: parts.append(wedge)
+
+    if not parts: return None
+    if len(parts) == 1: return parts[0]
+    try:
+        merged = rg.Brep.MergeBreps(parts, 0.001)
+        if merged is not None: return merged
+    except Exception: pass
+    try:
+        joined = rg.Brep.JoinBreps(parts, 0.001)
+        if joined and len(joined) > 0: return joined[0]
+    except Exception: pass
+    return parts[0]
+
+
+def _line_intersect_xy(p1, dir1, p2, dir2):
+    """2D-Linien-Schnittpunkt in der XY-Ebene. dir1, dir2 = Richtungs-
+    vektoren (muessen nicht normalisiert sein). Liefert Point3d (Z=0)
+    oder None bei Parallelitaet."""
+    det = dir1.X * (-dir2.Y) - dir1.Y * (-dir2.X)
+    if abs(det) < 1e-9: return None
+    dx = p2.X - p1.X
+    dy = p2.Y - p1.Y
+    t1 = (dx * (-dir2.Y) - dy * (-dir2.X)) / det
+    return rg.Point3d(p1.X + dir1.X * t1, p1.Y + dir1.Y * t1, 0)
+
+
+def _make_treppe_l_volume(axis_polyline, breite, referenz, n_stufen, uk, ok,
+                            modus="flach", lauf_d=0.18):
+    """L-Treppe aus 3-Punkt-Polylinie (Start, Eck-Punkt, End).
+    Bauet 2 gerade Laufe + 1 Podest am Eck zusammen. Hoehe wird
+    proportional zu den Lauflinien-Laengen auf die beiden Laufe verteilt."""
+    if not isinstance(axis_polyline, rg.Curve): return None
+    try:
+        ok_pl, poly = axis_polyline.TryGetPolyline()
+    except Exception:
+        return None
+    if not ok_pl or poly is None or poly.Count != 3:
+        return None
+    p0 = rg.Point3d(poly[0].X, poly[0].Y, 0)
+    p1 = rg.Point3d(poly[1].X, poly[1].Y, 0)
+    p2 = rg.Point3d(poly[2].X, poly[2].Y, 0)
+
+    v1 = rg.Vector3d(p1.X - p0.X, p1.Y - p0.Y, 0)
+    v2 = rg.Vector3d(p2.X - p1.X, p2.Y - p1.Y, 0)
+    L1 = v1.Length
+    L2 = v2.Length
+    half_b = float(breite) * 0.5
+    if L1 < half_b + 0.05 or L2 < half_b + 0.05:
+        print("[ELEMENTE] L-Treppe: Lauflinien zu kurz fuer Podest")
+        return None
+
+    H = float(ok) - float(uk)
+    if H <= 1e-6: return None
+    N = max(2, int(n_stufen))
+    S = H / N
+
+    # Stufen-Verteilung: N1 wird aus L1 mit dem optimalen A bestimmt,
+    # damit die Klick-Position des Users direkt N1 (Stufen vor Podest)
+    # entspricht — genauso wie's der Live-Preview anzeigt.
+    eff_L1 = L1 - half_b
+    eff_L2 = L2 - half_b
+    if eff_L1 + eff_L2 <= 0: return None
+    A_opt = 0.63 - 2.0 * S
+    if A_opt < 0.21: A_opt = 0.21
+    if A_opt > 0.35: A_opt = 0.35
+    N1 = int(round(eff_L1 / A_opt))
+    if N1 < 1: N1 = 1
+    if N1 > N - 1: N1 = N - 1
+    N2 = N - N1
+
+    v1u = rg.Vector3d(v1); v1u.Unitize()
+    v2u = rg.Vector3d(v2); v2u.Unitize()
+
+    # Run 1: von p0 bis p1 - v1u*half_b
+    run1_end = rg.Point3d(p1.X - v1u.X * half_b, p1.Y - v1u.Y * half_b, 0)
+    line1 = rg.LineCurve(p0, run1_end)
+    z_podest = float(uk) + N1 * S
+    brep1 = _make_treppe_volume(line1, breite, referenz, N1,
+                                  float(uk), z_podest, modus, lauf_d)
+
+    # Run 2: von p1 + v2u*half_b bis p2
+    run2_start = rg.Point3d(p1.X + v2u.X * half_b, p1.Y + v2u.Y * half_b, 0)
+    line2 = rg.LineCurve(run2_start, p2)
+    brep2 = _make_treppe_volume(line2, breite, referenz, N2,
+                                  z_podest, float(ok), modus, lauf_d)
+
+    # Podest am Eck p1 — adaptives Hexagon das die zwei Lauf-Querschnitte
+    # an ihren tatsaechlichen Richtungen verbindet. Bei 90° L kollabiert
+    # zu Quadrat, bei flacheren/spitzeren Winkeln wird's ein 5/6-Eck mit
+    # den Schnittpunkten der ausserhalbliegenden Seitenwaende.
+    perp1 = rg.Vector3d(-v1u.Y, v1u.X, 0)
+    perp2 = rg.Vector3d(-v2u.Y, v2u.X, 0)
+    b = float(breite)
+    if referenz == "links":
+        perp_lo, perp_hi = 0.0, +b
+    elif referenz == "rechts":
+        perp_lo, perp_hi = -b, 0.0
+    else:  # mid
+        perp_lo, perp_hi = -half_b, +half_b
+
+    # End-Querschnitt von Run 1 + Start-Querschnitt von Run 2
+    end_lo = rg.Point3d(run1_end.X + perp1.X * perp_lo,
+                          run1_end.Y + perp1.Y * perp_lo, 0)
+    end_hi = rg.Point3d(run1_end.X + perp1.X * perp_hi,
+                          run1_end.Y + perp1.Y * perp_hi, 0)
+    start_lo = rg.Point3d(run2_start.X + perp2.X * perp_lo,
+                            run2_start.Y + perp2.Y * perp_lo, 0)
+    start_hi = rg.Point3d(run2_start.X + perp2.X * perp_hi,
+                            run2_start.Y + perp2.Y * perp_hi, 0)
+    # Eckpunkte = Schnitt der Seitenwand-Linien (Run 1 weiter entlang v1,
+    # Run 2 zurueck entlang -v2)
+    minus_v2 = rg.Vector3d(-v2u.X, -v2u.Y, 0)
+    corner_lo = _line_intersect_xy(end_lo, v1u, start_lo, minus_v2)
+    corner_hi = _line_intersect_xy(end_hi, v1u, start_hi, minus_v2)
+
+    if modus == "massiv":
+        z_lo = float(uk)
+    else:
+        z_lo = z_podest - float(lauf_d)
+    z_hi = z_podest
+
+    podest_brep = None
+    try:
+        # Hexagon-Vertices in CCW-Order:
+        # end_lo → corner_lo → start_lo → start_hi → corner_hi → end_hi
+        def _add_unique(arr, p, tol=1e-5):
+            if p is None: return
+            if not arr: arr.append(p); return
+            last = arr[-1]
+            if (last.X - p.X) ** 2 + (last.Y - p.Y) ** 2 < tol * tol: return
+            arr.append(p)
+
+        verts = []
+        _add_unique(verts, end_lo)
+        _add_unique(verts, corner_lo)
+        _add_unique(verts, start_lo)
+        _add_unique(verts, start_hi)
+        _add_unique(verts, corner_hi)
+        _add_unique(verts, end_hi)
+
+        if len(verts) >= 3:
+            # CCW-Check via Shoelace — sonst umdrehen damit Extrusion in +Z geht
+            area2 = 0.0
+            n_v = len(verts)
+            for i in range(n_v):
+                pa = verts[i]
+                pb = verts[(i + 1) % n_v]
+                area2 += pa.X * pb.Y - pa.Y * pb.X
+            if area2 < 0:
+                verts = list(reversed(verts))
+            pts_bot = [rg.Point3d(p.X, p.Y, z_lo) for p in verts]
+            pts_bot.append(pts_bot[0])
+            bot_curve = rg.PolylineCurve(rg.Polyline(pts_bot))
+            ext = rg.Extrusion.Create(bot_curve, z_hi - z_lo, True)
+            if ext is not None:
+                podest_brep = ext.ToBrep()
+    except Exception as ex:
+        print("[ELEMENTE] Podest hexagon:", ex)
+
+    parts = [b for b in (brep1, podest_brep, brep2) if b is not None]
+    if not parts: return None
+    if len(parts) == 1: return parts[0]
+    # MergeBreps versucht alle Brep-Teile zu einem einzelnen Brep
+    # (mit ggf. mehreren disjunkten Shells) zu kombinieren.
+    try:
+        merged = rg.Brep.MergeBreps(parts, 0.001)
+        if merged is not None: return merged
+    except Exception: pass
+    try:
+        joined = rg.Brep.JoinBreps(parts, 0.001)
+        if joined and len(joined) > 0: return joined[0]
+    except Exception: pass
+    return parts[0]
+
+
+def _make_treppe_volume(axis_curve, breite, referenz, n_stufen, uk, ok,
+                          modus="flach", lauf_d=0.18):
+    """Gerade Treppe: bauet ein Seitenprofil (Step-Polygon) entlang der
+    Lauflinie und extrudiert es senkrecht um `breite`. Einzelnes sauberes
+    Brep-Volumen. `modus` bestimmt die Form der Unterseite."""
+    if not isinstance(axis_curve, rg.Curve): return None
+    try:
+        P0 = axis_curve.PointAtStart
+        P1 = axis_curve.PointAtEnd
+        tan_vec = rg.Vector3d(P1.X - P0.X, P1.Y - P0.Y, 0)
+        L = tan_vec.Length
+        if L < 1e-6: return None
+        tan_vec.Unitize()
+        perp = rg.Vector3d(-tan_vec.Y, tan_vec.X, 0)
+        H = float(ok) - float(uk)
+        if H <= 1e-6: return None
+        N = max(2, int(n_stufen))
+        S = H / N
+        A = L / N   # N Auftritte (oberster Tritt inkl.)
+
+        if modus not in _TREPPE_MODI: modus = "flach"
+        profile_2d = _treppe_profile_2d(N, S, A, uk, modus, lauf_d)
+
+        b = float(breite)
+        if referenz == "links":
+            perp_start, perp_end = 0.0, -b
+        elif referenz == "rechts":
+            perp_start, perp_end = 0.0, +b
+        else:
+            perp_start, perp_end = -b * 0.5, +b * 0.5
+
+        shift0 = rg.Vector3d(perp.X * perp_start, perp.Y * perp_start, 0)
+        world_pts = []
+        for (px, pz) in profile_2d:
+            wp = rg.Point3d(P0.X + tan_vec.X * px + shift0.X,
+                             P0.Y + tan_vec.Y * px + shift0.Y,
+                             pz)
+            world_pts.append(wp)
+        poly = rg.Polyline(world_pts)
+        profile_curve = rg.PolylineCurve(poly)
+        if not profile_curve.IsClosed: return None
+
+        extrude_len = perp_end - perp_start
+        try:
+            ext = rg.Extrusion.Create(profile_curve, extrude_len, True)
+            if ext is not None:
+                return ext.ToBrep()
+        except Exception as ex:
+            print("[ELEMENTE] Treppe Extrusion:", ex)
+        return None
+    except Exception as ex:
+        print("[ELEMENTE] _make_treppe_volume:", ex)
+        return None
+
+
+def _regenerate_element(doc, element_id):
+    """Regeneriert das Volumen eines Elements (Wand oder Decke) anhand
+    seines Source-Objekts (Achse bzw. Outline)."""
+    src_obj, meta = _find_source(doc, element_id)
+    if src_obj is None or meta is None: return False
+    # Oeffnung selbst hat kein Volumen — stattdessen die Elternwand regen
+    if meta["type"] == "oeffnung_point":
+        parent_id = meta.get("oeff_parent") or ""
+        if parent_id:
+            return _regenerate_element(doc, parent_id)
+        return False
+    geom = src_obj.Geometry
+    if not isinstance(geom, rg.Curve): return False
+    g = _geschoss_by_id(doc, meta["geschoss"])
+    geschoss_name = g.get("name", "EG") if g else "EG"
+
+    # _REGEN_BUSY waehrend Regen setzen — verhindert dass die Listener
+    # (Add/Replace/Delete) waehrend dem Erstellen/Loeschen von Volume-
+    # Objekten Dedup oder Cascade-Logik ausfuehren. Wichtig fuer
+    # Oeffnungen, wo mehrere Brep-Pieces mit gleicher ID hinzugefuegt
+    # werden.
+    _was_busy = sc.sticky.get(_REGEN_BUSY, False)
+    sc.sticky[_REGEN_BUSY] = True
+    try:
+        return _regenerate_element_body(doc, element_id, src_obj, meta,
+                                          geom, geschoss_name)
+    finally:
+        sc.sticky[_REGEN_BUSY] = _was_busy
+
+
+def _regenerate_element_body(doc, element_id, src_obj, meta, geom, geschoss_name):
+    """Eigentliche Implementierung des Regen — der aeussere Wrapper
+    `_regenerate_element` setzt _REGEN_BUSY und dispatcht oeffnung_point."""
+    if meta["type"] == "wand_axis":
+        uk, ok = _resolve_uk_ok(doc, meta["geschoss"],
+                                meta["uk_override"], meta["ok_override"])
+        brep = _make_volume_geometry(geom, meta["dicke"], uk, ok,
+                                     meta.get("referenz", "mid"))
+        # Oeffnungen (Fenster/Tueren) abziehen + jeweils das Oeffnungs-
+        # Volumen (Rahmen+Sims+Glas) erstellen oder aktualisieren.
+        opening_jobs = []
+        if brep is not None:
+            for op_obj, op_meta in _find_openings_for_wall(doc, element_id):
+                pt_geom = op_obj.Geometry
+                pt_loc = None
+                if hasattr(pt_geom, 'Location'):
+                    pt_loc = pt_geom.Location
+                elif isinstance(pt_geom, rg.Point3d):
+                    pt_loc = pt_geom
+                if pt_loc is None: continue
+                # Effektives Oeffnungs-Zentrum auf der Achse je nach
+                # Referenz-Lage (mid/links/rechts) berechnen.
+                eff_pt = _oeff_effective_axis_point(
+                    geom, pt_loc, op_meta["oeff_breite"],
+                    op_meta.get("oeff_referenz", "mid"))
+                cutout = _make_oeffnung_cutout(
+                    geom, eff_pt, meta["dicke"],
+                    op_meta["oeff_breite"], op_meta["oeff_hoehe"],
+                    op_meta["oeff_brueest"], uk)
+                if cutout is None: continue
+                try:
+                    diff = rg.Brep.CreateBooleanDifference(
+                        [brep], [cutout], 0.001)
+                    if diff and len(diff) > 0:
+                        brep = diff[0]
+                except Exception as ex:
+                    print("[ELEMENTE] BoolDiff Oeffnung:", ex)
+                # Job fuer das Oeffnungs-Volumen merken — mit effektivem
+                # Zentrum, sodass der Rahmen am selben Ort entsteht.
+                opening_jobs.append((op_meta, eff_pt, uk))
+        # Oeffnungs-Volumina aktualisieren (Rahmen + Mittelpfosten + Sims + Glas).
+        # Mehrere Brep-Pieces pro Oeffnung — alle bekommen die gleiche
+        # Oeffnungs-ID und werden bei jedem Regen komplett neu aufgebaut.
+        op_layer = _ensure_layer(doc, _layer_path_volume(doc, geschoss_name))
+        for op_meta, pt_loc, op_uk in opening_jobs:
+            # Alte Volume-Objekte dieser Oeffnung loeschen
+            for o, _m in _find_objects_by_wall_id(doc, op_meta["id"], "oeffnung_volume"):
+                try: doc.Objects.Delete(o.Id, True)
+                except Exception as ex: print("[ELEMENTE] del old oeff vol:", ex)
+            # Neue Pieces bauen
+            pieces = _make_oeffnung_pieces(geom, pt_loc, meta["dicke"],
+                                             op_meta, op_uk)
+            for pbrep in pieces:
+                op_attrs = Rhino.DocObjects.ObjectAttributes()
+                op_attrs.LayerIndex = op_layer
+                _attach_meta(op_attrs, op_meta["id"], "oeffnung_volume",
+                             op_meta["geschoss"], meta["dicke"], "", "",
+                             oeff_typ=op_meta.get("oeff_typ"),
+                             oeff_parent=op_meta.get("oeff_parent"),
+                             oeff_breite=op_meta.get("oeff_breite"),
+                             oeff_hoehe=op_meta.get("oeff_hoehe"),
+                             oeff_brueest=op_meta.get("oeff_brueest"),
+                             oeff_rahmen_b=op_meta.get("oeff_rahmen_b"),
+                             oeff_rahmen_tiefe=op_meta.get("oeff_rahmen_tiefe"),
+                             oeff_rahmen_pos=op_meta.get("oeff_rahmen_pos"),
+                             oeff_fluegel=op_meta.get("oeff_fluegel"),
+                             oeff_sims_aus=op_meta.get("oeff_sims_aus"),
+                             oeff_sims_in=op_meta.get("oeff_sims_in"),
+                             oeff_glas=op_meta.get("oeff_glas"),
+                             oeff_referenz=op_meta.get("oeff_referenz"))
+                doc.Objects.AddBrep(pbrep, op_attrs)
+        vol_type = "wand_volume"
+        layer = _ensure_layer(doc, _layer_path_volume(doc, geschoss_name))
+        src_layer = _ensure_layer(doc, _layer_path_axis(doc, geschoss_name))
+    elif meta["type"] == "decke_outline":
+        uk, ok = _resolve_decke_z(doc, meta["geschoss"], meta["dicke"],
+                                  meta["uk_override"], meta["ok_override"])
+        brep = _make_decke_volume(geom, meta["dicke"], uk, ok)
+        vol_type = "decke_volume"
+        layer = _ensure_layer(doc, _layer_path_decke(doc, geschoss_name))
+        src_layer = layer
+    elif meta["type"] == "dach_outline":
+        base = _resolve_dach_base(doc, meta["geschoss"], meta["uk_override"])
+        dt = meta.get("dach_typ", "pult")
+        if dt == "sattel":
+            brep = _make_satteldach_brep(geom, meta["dicke"], base,
+                                          meta.get("neigung", 30.0))
+        elif dt == "walm":
+            brep = _make_walmdach_brep(geom, meta["dicke"], base,
+                                        meta.get("neigung", 30.0))
+        elif dt == "mansarde":
+            brep = _make_mansardendach_brep(
+                geom, meta["dicke"], base,
+                meta.get("neigung", 30.0),
+                meta.get("neigung_unten", 60.0),
+                meta.get("knick_h", 2.0),
+                variante=meta.get("dach_variante", "walm"))
+        else:  # pult
+            brep = _make_pultdach_volume(geom, meta["dicke"], base,
+                                          meta.get("neigung", 30.0),
+                                          meta.get("eave_idx", 0))
+        vol_type = "dach_volume"
+        layer = _ensure_layer(doc, _layer_path_dach(doc, geschoss_name))
+        src_layer = layer
+    elif meta["type"] == "treppe_axis":
+        # Start- und Zielgeschoss → uk/ok aus OKFF-Differenz.
+        # H-Override hat Vorrang vor Zielgeschoss.
+        g_start = _geschoss_by_id(doc, meta["geschoss"])
+        g_end   = _geschoss_by_id(doc, meta.get("geschoss_end", ""))
+        if g_start is None:
+            return False
+        uk = float(g_start.get("okff", 0.0))
+        h_over = meta.get("treppe_h_over", "")
+        if h_over:
+            try:
+                ok = uk + float(h_over)
+            except Exception:
+                ok = uk + float(g_start.get("hoehe", 3.0))
+        elif g_end is not None:
+            ok = float(g_end.get("okff", uk + 3.0))
+        else:
+            ok = uk + float(g_start.get("hoehe", 3.0))
+        art = meta.get("treppe_art", "gerade")
+        if art == "l":
+            brep = _make_treppe_l_volume(geom, meta.get("treppe_breite", 1.0),
+                                            meta.get("treppe_referenz", "mid"),
+                                            meta.get("treppe_n", 15), uk, ok,
+                                            modus=meta.get("treppe_modus", "flach"),
+                                            lauf_d=meta.get("treppe_lauf_d", 0.18))
+        elif art == "wendel":
+            brep = _make_treppe_wendel_volume(
+                geom, meta.get("treppe_breite", 1.0),
+                meta.get("treppe_referenz", "mid"),
+                meta.get("treppe_n", 15), uk, ok,
+                modus=meta.get("treppe_modus", "flach"),
+                lauf_d=meta.get("treppe_lauf_d", 0.18))
+        else:
+            brep = _make_treppe_volume(geom, meta.get("treppe_breite", 1.0),
+                                         meta.get("treppe_referenz", "mid"),
+                                         meta.get("treppe_n", 15), uk, ok,
+                                         modus=meta.get("treppe_modus", "flach"),
+                                         lauf_d=meta.get("treppe_lauf_d", 0.18))
+        vol_type = "treppe_volume"
+        layer = _ensure_layer(doc, _layer_path_treppe(doc, geschoss_name))
+        src_layer = layer
+    else:
+        return False
+
+    # Migration: Source-Objekt (Achse/Outline) auf den aktuellen Layer
+    # schieben, falls es noch auf einem alten Layer steht (z.B. von einer
+    # frueheren Bug-Version auf "01_WAND" / "06_3D_VOLUMEN")
+    try:
+        if src_layer >= 0 and src_obj.Attributes.LayerIndex != src_layer:
+            new_attrs = src_obj.Attributes.Duplicate()
+            new_attrs.LayerIndex = src_layer
+            doc.Objects.ModifyAttributes(src_obj, new_attrs, True)
+    except Exception as ex:
+        print("[ELEMENTE] migrate src-layer:", ex)
+
+    if brep is None: return False
+    vol_obj = _find_target_volume(doc, element_id)
+    attrs = Rhino.DocObjects.ObjectAttributes()
+    attrs.LayerIndex = layer
+    _attach_meta(attrs, element_id, vol_type, meta["geschoss"],
+                 meta["dicke"], meta["uk_override"], meta["ok_override"],
+                 meta.get("referenz", "mid"),
+                 neigung=meta.get("neigung"),
+                 eave_idx=meta.get("eave_idx"),
+                 dach_typ=meta.get("dach_typ"),
+                 neigung_unten=meta.get("neigung_unten"),
+                 knick_h=meta.get("knick_h"),
+                 dach_variante=meta.get("dach_variante"),
+                 geschoss_end=meta.get("geschoss_end"),
+                 treppe_breite=meta.get("treppe_breite"),
+                 treppe_n=meta.get("treppe_n"),
+                 treppe_referenz=meta.get("treppe_referenz"),
+                 treppe_modus=meta.get("treppe_modus"),
+                 treppe_lauf_d=meta.get("treppe_lauf_d"),
+                 treppe_art=meta.get("treppe_art"),
+                 treppe_h_over=meta.get("treppe_h_over"),
+                 treppe_soll=meta.get("treppe_soll"))
+    if vol_obj is not None:
+        doc.Objects.Replace(vol_obj.Id, brep)
+        vol_obj_new = doc.Objects.Find(vol_obj.Id)
+        if vol_obj_new is not None:
+            vol_obj_new.Attributes = attrs
+            vol_obj_new.CommitChanges()
+    else:
+        doc.Objects.AddBrep(brep, attrs)
+    return True
+
+
+# Alias fuer Backwards-Compat / interne Aufrufer
+_regenerate_volume = _regenerate_element
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class ElementeBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "elemente")
+        self._last_selection_ids = ()
+
+    def _on_ready(self):
+        self._send_state()
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+
+        if   t == "READY":              self._on_ready()
+        elif t == "LIST":               self._send_state()
+        elif t == "CREATE_WALL":        self._cmd_create_wall(p)
+        elif t == "CREATE_DECKE":       self._cmd_create_decke(p)
+        elif t == "CREATE_DACH":        self._cmd_create_dach(p)
+        elif t == "CREATE_FENSTER":     self._cmd_create_oeffnung(p, "fenster")
+        elif t == "CREATE_TUER":        self._cmd_create_oeffnung(p, "tuer")
+        elif t == "CREATE_TREPPE":      self._cmd_create_treppe(p)
+        elif t == "UPDATE_WALL":        self._update_wall(p)
+        elif t == "UPDATE_ELEMENT":     self._update_wall(p)  # gleiche Logik fuer alle
+        elif t == "DELETE_WALL":        self._delete_wall(p.get("id"))
+        elif t == "DELETE_ELEMENT":     self._delete_wall(p.get("id"))
+        elif t == "REGENERATE_ALL":     self._regenerate_all()
+
+    def _send_state(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None:
+            self.send("STATE", {"elements": [], "geschosse": [], "selection": None})
+            return
+        geschosse = _load_geschosse(doc)
+        # Alle Source-Objekte (Achsen + Outlines) durchgehen
+        elements = []
+        seen_ids = set()
+        for obj in doc.Objects:
+            meta = _read_meta(obj)
+            if meta is None: continue
+            if meta["type"] not in SOURCE_TYPES: continue
+            if meta["id"] in seen_ids: continue
+            seen_ids.add(meta["id"])
+            g = _geschoss_by_id(doc, meta["geschoss"])
+            geschoss_name = g.get("name", "?") if g else "?"
+            selected = obj.IsSelected(False) > 0
+            base = {
+                "id":            meta["id"],
+                "objectId":      str(obj.Id),
+                "geschoss":      meta["geschoss"],
+                "geschossName":  geschoss_name,
+                "dicke":         meta["dicke"],
+                "ukOverride":    meta["uk_override"],
+                "okOverride":    meta["ok_override"],
+                "selected":      selected,
+            }
+            if meta["type"] == "wand_axis":
+                uk, ok = _resolve_uk_ok(doc, meta["geschoss"],
+                                        meta["uk_override"], meta["ok_override"])
+                base.update({
+                    "kind":     "wand",
+                    "referenz": meta.get("referenz", "mid"),
+                    "uk":       uk,
+                    "ok":       ok,
+                })
+            elif meta["type"] == "decke_outline":
+                uk, ok = _resolve_decke_z(doc, meta["geschoss"], meta["dicke"],
+                                          meta["uk_override"], meta["ok_override"])
+                base.update({
+                    "kind": "decke",
+                    "uk":   uk,
+                    "ok":   ok,
+                })
+            elif meta["type"] == "dach_outline":
+                base_h = _resolve_dach_base(doc, meta["geschoss"], meta["uk_override"])
+                base.update({
+                    "kind":     "dach",
+                    "uk":       base_h,
+                    "ok":       base_h,
+                    "neigung":  meta.get("neigung", 30.0),
+                    "eaveIdx":  meta.get("eave_idx", 0),
+                    "dachTyp":  meta.get("dach_typ", "pult"),
+                    "neigungUnten": meta.get("neigung_unten", 60.0),
+                    "knickH":   meta.get("knick_h", 2.0),
+                    "dachVariante": meta.get("dach_variante", "walm"),
+                })
+            elif meta["type"] == "oeffnung_point":
+                base.update({
+                    "kind":        meta.get("oeff_typ", "fenster"),
+                    "parentId":    meta.get("oeff_parent", ""),
+                    "breite":      meta.get("oeff_breite", 1.0),
+                    "hoehe":       meta.get("oeff_hoehe", 1.4),
+                    "brueest":     meta.get("oeff_brueest", 0.9),
+                    "rahmenB":     meta.get("oeff_rahmen_b", 0.06),
+                    "rahmenTiefe": meta.get("oeff_rahmen_tiefe", 0.08),
+                    "rahmenPos":   meta.get("oeff_rahmen_pos", "mid"),
+                    "fluegel":     meta.get("oeff_fluegel", 1),
+                    "simsAus":     meta.get("oeff_sims_aus", "ohne"),
+                    "simsIn":      meta.get("oeff_sims_in",  "ohne"),
+                    "glas":        bool(meta.get("oeff_glas", False)),
+                    "oeffReferenz": meta.get("oeff_referenz", "mid"),
+                })
+            else:  # treppe_axis
+                gs = _geschoss_by_id(doc, meta["geschoss"])
+                ge = _geschoss_by_id(doc, meta.get("geschoss_end", ""))
+                try: uk = float(gs.get("okff", 0.0)) if gs else 0.0
+                except Exception: uk = 0.0
+                hov = meta.get("treppe_h_over", "")
+                if hov:
+                    try: ok = uk + float(hov)
+                    except Exception: ok = uk + 3.0
+                elif ge is not None:
+                    try: ok = float(ge.get("okff", uk + 3.0))
+                    except Exception: ok = uk + 3.0
+                else:
+                    try: ok = uk + float(gs.get("hoehe", 3.0)) if gs else uk + 3.0
+                    except Exception: ok = uk + 3.0
+                # Lauflinien-Laenge aus dem Source-Curve
+                try: lauf_len = float(obj.Geometry.GetLength())
+                except Exception: lauf_len = 0.0
+                base.update({
+                    "kind":         "treppe",
+                    "geschossEnd":  meta.get("geschoss_end", ""),
+                    "geschossEndName": (ge.get("name") if ge else ""),
+                    "breite":       meta.get("treppe_breite", 1.0),
+                    "nStufen":      meta.get("treppe_n", 15),
+                    "treppeReferenz": meta.get("treppe_referenz", "mid"),
+                    "treppeModus":  meta.get("treppe_modus", "flach"),
+                    "treppeArt":    meta.get("treppe_art", "gerade"),
+                    "laufD":        meta.get("treppe_lauf_d", 0.18),
+                    "laufLen":      lauf_len,
+                    "uk":           uk,
+                    "ok":           ok,
+                    "hOver":        meta.get("treppe_h_over", ""),
+                    "soll":         meta.get("treppe_soll", _TREPPE_SOLL_DEFAULT),
+                })
+            elements.append(base)
+        sel_id = next((e["id"] for e in elements if e["selected"]), None)
+        self.send("STATE", {
+            "elements":      elements,
+            "geschosse":     [{"id": g.get("id"), "name": g.get("name")}
+                              for g in geschosse if isinstance(g, dict)],
+            "selection":     sel_id,
+            "activeGeschoss":     _active_geschoss_id(doc),
+            "activeGeschossName": _active_geschoss_name(doc),
+        })
+
+    # --- Wand-Befehle -------------------------------------------------------
+
+    def _cmd_create_wall(self, p):
+        """Interaktive Wand-Erzeugung mit Modus-Auswahl.
+        Modi:
+          - Polylinie: mehrere Punkte, Enter / Klick auf letzten = fertig
+          - Linie: 2 Punkte, danach automatisch fertig
+          - Spline: mehrere Kontrollpunkte, Enter = fertig, Achse wird ein
+            interpolierter NURBS
+          - Bogen: 3-Punkt-Bogen (Anfang, Mittelpunkt, Ende)
+        Plus Optionen: Referenz, Dicke."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        geschoss = p.get("geschoss") or _active_geschoss_id(doc)
+        if not geschoss:
+            print("[ELEMENTE] Kein Geschoss aktiv"); return
+        # Last-Used: Werte ueberleben den Befehl. Frontend kann ueberschreiben,
+        # sonst nehmen wir den letzten Wert aus der Session.
+        d_in = p.get("dicke")
+        try: dicke = float(d_in) if d_in else _last("wand_dicke", 0.25)
+        except Exception: dicke = _last("wand_dicke", 0.25)
+        uk_over = p.get("ukOverride", "")
+        ok_over = p.get("okOverride", "")
+        referenz = p.get("referenz") or _last("wand_referenz", "mid")
+
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception as ex:
+            print("[ELEMENTE] Imports:", ex); return
+
+        modi  = ["Polylinie", "Linie", "Rechteck", "Spline", "Bogen"]
+        modus = p.get("modus") or _last("wand_modus", "Polylinie")
+        if modus not in modi: modus = "Polylinie"
+        ref_codes  = ["mid", "left", "right"]
+        ref_labels = ["Mittig", "Links", "Rechts"]
+        try: ref_idx = ref_codes.index(referenz)
+        except ValueError: ref_idx = 0
+
+        def _build_prompt(base):
+            return "{} [Modus={}, Referenz={}, Dicke={:.3f}]".format(
+                base, modus, ref_labels[ref_idx], dicke)
+
+        first_pt = None
+        try:
+            while True:
+                gp = ric.GetPoint()
+                gp.SetCommandPrompt(_build_prompt("Wand: Startpunkt"))
+                opt_modus = gp.AddOptionList("Modus", modi, modi.index(modus))
+                opt_ref   = gp.AddOptionList("Referenz", ref_labels, ref_idx)
+                opt_dicke = gp.AddOption("Dicke")
+                res = gp.Get()
+                if res == GetResult.Option:
+                    if gp.OptionIndex() == opt_modus:
+                        try: modus = modi[gp.Option().CurrentListOptionIndex]
+                        except Exception: pass
+                    elif gp.OptionIndex() == opt_ref:
+                        try: ref_idx = gp.Option().CurrentListOptionIndex
+                        except Exception: pass
+                    elif gp.OptionIndex() == opt_dicke:
+                        try:
+                            gn = ric.GetNumber()
+                            gn.SetCommandPrompt("Wand-Dicke")
+                            gn.SetDefaultNumber(dicke)
+                            gn.SetLowerLimit(0.01, False)
+                            if gn.Get() == GetResult.Number:
+                                dicke = float(gn.Number())
+                        except Exception as ex: print("[ELEMENTE] GetNumber:", ex)
+                    continue
+                if res != GetResult.Point: return
+                first_pt = gp.Point()
+                break
+        except Exception as ex:
+            print("[ELEMENTE] wand first-point:", ex); return
+
+        referenz = ref_codes[ref_idx]
+        try:
+            if modus == "Rechteck":
+                axes = self._collect_wall_rectangle(doc, first_pt, dicke, referenz)
+                if not axes:
+                    print("[ELEMENTE] Rechteck abgebrochen"); return
+                for ac in axes:
+                    self._make_wall_from_axis(doc, ac, geschoss, dicke,
+                                               uk_over, ok_over, referenz)
+                _save_last(wand_dicke=dicke, wand_referenz=referenz, wand_modus=modus)
+                self._send_state()
+                return
+            if modus == "Polylinie":
+                axis_curve = self._collect_wall_polyline(doc, first_pt, dicke,
+                                                         referenz, ends_after=None)
+            elif modus == "Linie":
+                axis_curve = self._collect_wall_polyline(doc, first_pt, dicke,
+                                                         referenz, ends_after=1)
+            elif modus == "Spline":
+                axis_curve = self._collect_wall_spline(doc, first_pt, dicke, referenz)
+            elif modus == "Bogen":
+                axis_curve = self._collect_wall_arc(doc, first_pt, dicke, referenz)
+            else:
+                axis_curve = None
+        except Exception as ex:
+            print("[ELEMENTE] wand collect:", ex); return
+
+        if axis_curve is None:
+            print("[ELEMENTE] keine gueltige Achse"); return
+        self._make_wall_from_axis(doc, axis_curve, geschoss, dicke,
+                                   uk_over, ok_over, referenz)
+        _save_last(wand_dicke=dicke, wand_referenz=referenz, wand_modus=modus)
+        self._send_state()
+
+    def _collect_wall_polyline(self, doc, first_pt, dicke, referenz, ends_after=None):
+        """Sammelt eine Polyline-Achse. ends_after=N: nach N weiteren
+        Punkten automatisch beenden (1 = klassische Linie aus 2 Punkten)."""
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception: return None
+        points = [first_pt]
+        tol = max(doc.ModelAbsoluteTolerance, 1e-4)
+        while True:
+            if ends_after is not None and len(points) > ends_after:
+                break
+            gp = ric.GetPoint()
+            label = "Endpunkt" if ends_after == 1 else \
+                    "Naechster Punkt (Enter = fertig)"
+            gp.SetCommandPrompt(label)
+            if ends_after != 1:
+                gp.AcceptNothing(True)
+            try: gp.SetBasePoint(points[-1], True)
+            except Exception: pass
+            try:
+                preview = _make_preview_handler(list(points), dicke, referenz)
+                gp.DynamicDraw += preview
+            except Exception: pass
+            res = gp.Get()
+            if res == GetResult.Nothing: break
+            if res != GetResult.Point: break
+            pt = gp.Point()
+            if pt.DistanceTo(points[-1]) < tol and ends_after != 1:
+                break
+            points.append(pt)
+        if len(points) < 2: return None
+        pts3d = [rg.Point3d(p.X, p.Y, 0) for p in points]
+        if len(pts3d) == 2:
+            return rg.LineCurve(pts3d[0], pts3d[1])
+        return rg.PolylineCurve(rg.Polyline(pts3d))
+
+    def _collect_wall_spline(self, doc, first_pt, dicke, referenz):
+        """Spline-Wand: interpolierter NURBS durch Kontrollpunkte. Live-Preview
+        zeigt Kurve + Wand-Kanten."""
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception: return None
+        points = [first_pt]
+        tol = max(doc.ModelAbsoluteTolerance, 1e-4)
+        while True:
+            gp = ric.GetPoint()
+            gp.SetCommandPrompt("Spline-Kontrollpunkt (Enter = fertig)")
+            gp.AcceptNothing(True)
+            try: gp.SetBasePoint(points[-1], True)
+            except Exception: pass
+            try:
+                preview = _make_spline_preview_handler(list(points), dicke, referenz)
+                gp.DynamicDraw += preview
+            except Exception: pass
+            res = gp.Get()
+            if res == GetResult.Nothing: break
+            if res != GetResult.Point: break
+            pt = gp.Point()
+            if pt.DistanceTo(points[-1]) < tol: break
+            points.append(pt)
+        if len(points) < 2: return None
+        pts3d = [rg.Point3d(p.X, p.Y, 0) for p in points]
+        if len(pts3d) == 2:
+            return rg.LineCurve(pts3d[0], pts3d[1])
+        try:
+            return rg.Curve.CreateInterpolatedCurve(pts3d, 3)
+        except Exception:
+            return rg.PolylineCurve(rg.Polyline(pts3d))
+
+    def _collect_wall_arc(self, doc, first_pt, dicke, referenz):
+        """3-Punkt-Bogen mit Live-Preview ueber 2 Phasen (Mittel- und Endpunkt)."""
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception: return None
+        # Phase 1: Punkt auf dem Bogen
+        gp = ric.GetPoint()
+        gp.SetCommandPrompt("Punkt auf dem Bogen")
+        try: gp.SetBasePoint(first_pt, True)
+        except Exception: pass
+        try:
+            preview = _make_arc_preview_handler(first_pt, None, dicke, referenz)
+            gp.DynamicDraw += preview
+        except Exception: pass
+        res = gp.Get()
+        if res != GetResult.Point: return None
+        mid = gp.Point()
+        # Phase 2: Endpunkt — mit Bogen-Preview
+        gp = ric.GetPoint()
+        gp.SetCommandPrompt("Endpunkt")
+        try: gp.SetBasePoint(mid, True)
+        except Exception: pass
+        try:
+            preview = _make_arc_preview_handler(first_pt, mid, dicke, referenz)
+            gp.DynamicDraw += preview
+        except Exception: pass
+        res = gp.Get()
+        if res != GetResult.Point: return None
+        end = gp.Point()
+        p0 = rg.Point3d(first_pt.X, first_pt.Y, 0)
+        p1 = rg.Point3d(mid.X, mid.Y, 0)
+        p2 = rg.Point3d(end.X, end.Y, 0)
+        arc = rg.Arc(p0, p1, p2)
+        if not arc.IsValid: return None
+        return rg.ArcCurve(arc)
+
+    def _collect_wall_rectangle(self, doc, c1, dicke, referenz):
+        """Rechteck-Wand: zweite (diagonale) Ecke. Liefert Liste von 4
+        Line-Curves (eine pro Seite) — vier eigenstaendige Waende."""
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception: return None
+        gp = ric.GetPoint()
+        gp.SetCommandPrompt("Gegenueberliegende Ecke")
+        try: gp.SetBasePoint(c1, True)
+        except Exception: pass
+        try:
+            preview = _make_rectangle_wall_preview_handler(c1, dicke, referenz)
+            gp.DynamicDraw += preview
+        except Exception: pass
+        res = gp.Get()
+        if res != GetResult.Point: return None
+        c2 = gp.Point()
+        p1 = rg.Point3d(c1.X, c1.Y, 0)
+        p2 = rg.Point3d(c2.X, c1.Y, 0)
+        p3 = rg.Point3d(c2.X, c2.Y, 0)
+        p4 = rg.Point3d(c1.X, c2.Y, 0)
+        # Im Uhrzeigersinn — Referenz "links" landet damit innen, "rechts" aussen
+        return [
+            rg.LineCurve(p1, p2),
+            rg.LineCurve(p2, p3),
+            rg.LineCurve(p3, p4),
+            rg.LineCurve(p4, p1),
+        ]
+
+    def _make_wall_from_axis(self, doc, axis_curve, geschoss_id, dicke,
+                              uk_over, ok_over, referenz):
+        """Erzeugt Wand aus beliebiger Achsen-Curve (Line, Polyline, NURBS, Arc)."""
+        wall_id = "wall_" + uuid.uuid4().hex[:10]
+        g = _geschoss_by_id(doc, geschoss_id)
+        geschoss_name = g.get("name", "EG") if g else "EG"
+        axis_layer = _ensure_layer(doc, _layer_path_axis(doc, geschoss_name))
+        axis = axis_curve.DuplicateCurve()
+        try:
+            z0 = axis.PointAtStart.Z
+            if abs(z0) > 1e-6:
+                axis.Transform(rg.Transform.Translation(0, 0, -z0))
+        except Exception: pass
+        attrs = Rhino.DocObjects.ObjectAttributes()
+        attrs.LayerIndex = axis_layer
+        _attach_meta(attrs, wall_id, "wand_axis", geschoss_id,
+                     dicke, uk_over, ok_over, referenz)
+        if doc.Objects.AddCurve(axis, attrs) == System.Guid.Empty:
+            print("[ELEMENTE] Wand AddCurve fehlgeschlagen"); return
+        _regenerate_element(doc, wall_id)
+        doc.Views.Redraw()
+        print("[ELEMENTE] Wand erzeugt: {}".format(wall_id))
+
+    def _cmd_create_decke(self, p):
+        """Decken-Erzeugung mit Modus-Auswahl: Polylinie, Rechteck,
+        Rechteck-3-Punkte oder Kreis. Modus + Dicke per Command-Option."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        geschoss = p.get("geschoss") or _active_geschoss_id(doc)
+        if not geschoss:
+            print("[ELEMENTE] Kein Geschoss aktiv"); return
+        d_in = p.get("dicke")
+        try: dicke = float(d_in) if d_in else _last("decke_dicke", 0.20)
+        except Exception: dicke = _last("decke_dicke", 0.20)
+        uk_over = p.get("ukOverride", "")
+        ok_over = p.get("okOverride", "")
+
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception as ex:
+            print("[ELEMENTE] Imports:", ex); return
+
+        modi  = ["Polylinie", "Rechteck", "Rechteck3Punkte", "Kreis"]
+        modus = p.get("modus") or _last("decke_modus", "Polylinie")
+        if modus not in modi: modus = "Polylinie"
+
+        def _build_prompt(base):
+            return "{} [Modus={}, Dicke={:.3f}]".format(base, modus, dicke)
+
+        first_pt = None
+        try:
+            # Erster Punkt + Optionen
+            while True:
+                gp = ric.GetPoint()
+                gp.SetCommandPrompt(_build_prompt("Decke: Startpunkt"))
+                opt_modus = gp.AddOptionList("Modus", modi, modi.index(modus))
+                opt_dicke = gp.AddOption("Dicke")
+                res = gp.Get()
+                if res == GetResult.Option:
+                    if gp.OptionIndex() == opt_modus:
+                        try: modus = modi[gp.Option().CurrentListOptionIndex]
+                        except Exception: pass
+                    elif gp.OptionIndex() == opt_dicke:
+                        try:
+                            gn = ric.GetNumber()
+                            gn.SetCommandPrompt("Decken-Dicke")
+                            gn.SetDefaultNumber(dicke)
+                            gn.SetLowerLimit(0.01, False)
+                            if gn.Get() == GetResult.Number:
+                                dicke = float(gn.Number())
+                        except Exception as ex: print("[ELEMENTE] GetNumber:", ex)
+                    continue
+                if res != GetResult.Point: return
+                first_pt = gp.Point()
+                break
+        except Exception as ex:
+            print("[ELEMENTE] decke first-point:", ex); return
+
+        outline_curve = None
+        try:
+            if modus == "Polylinie":
+                outline_curve = self._collect_polyline_outline(doc, first_pt)
+            elif modus == "Rechteck":
+                outline_curve = _collect_rectangle(doc, first_pt)
+            elif modus == "Rechteck3Punkte":
+                outline_curve = _collect_rectangle_3pt(doc, first_pt)
+            elif modus == "Kreis":
+                outline_curve = _collect_circle(doc, first_pt)
+        except Exception as ex:
+            print("[ELEMENTE] decke collect:", ex)
+            return
+
+        if outline_curve is None or not outline_curve.IsClosed:
+            print("[ELEMENTE] keine gueltige Outline")
+            return
+        self._make_decke_from_outline(doc, outline_curve, geschoss, dicke,
+                                       uk_over, ok_over)
+        _save_last(decke_dicke=dicke, decke_modus=modus)
+        self._send_state()
+
+    def _collect_polyline_outline(self, doc, first_pt):
+        """Sammelt eine geschlossene Polyline via aufeinanderfolgendes
+        GetPoint mit Live-Preview. Enter / Klick auf Startpunkt schliesst."""
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception: return None
+        points = [first_pt]
+        tol = max(doc.ModelAbsoluteTolerance, 1e-4)
+        while True:
+            gp = ric.GetPoint()
+            gp.SetCommandPrompt("Naechster Punkt (Enter / Klick auf Start = schliessen)")
+            gp.AcceptNothing(True)
+            try: gp.SetBasePoint(points[-1], True)
+            except Exception: pass
+            try:
+                preview = _make_decke_preview_handler(list(points))
+                gp.DynamicDraw += preview
+            except Exception: pass
+            res = gp.Get()
+            if res == GetResult.Nothing: break
+            if res != GetResult.Point: break
+            pt = gp.Point()
+            if pt.DistanceTo(points[0]) < tol: break
+            if pt.DistanceTo(points[-1]) < tol: break
+            points.append(pt)
+        if len(points) < 3: return None
+        pts3d = [rg.Point3d(p.X, p.Y, 0) for p in points]
+        if pts3d[0].DistanceTo(pts3d[-1]) > 1e-6:
+            pts3d.append(pts3d[0])
+        return rg.PolylineCurve(rg.Polyline(pts3d))
+
+    def _make_decke_from_outline(self, doc, outline_curve, geschoss_id, dicke,
+                                  uk_over, ok_over):
+        """Decke aus beliebiger geschlossener Outline-Curve (Polyline, Rechteck,
+        Kreis, ...). Curve wird so wie sie ist gespeichert; das Volumen wird
+        per Extrusion erzeugt."""
+        element_id = "decke_" + uuid.uuid4().hex[:10]
+        g = _geschoss_by_id(doc, geschoss_id)
+        geschoss_name = g.get("name", "EG") if g else "EG"
+        layer = _ensure_layer(doc, _layer_path_decke(doc, geschoss_name))
+        # Sicherstellen dass die Curve auf Z=0 liegt
+        outline = outline_curve.DuplicateCurve()
+        try:
+            z0 = outline.PointAtStart.Z
+            if abs(z0) > 1e-6:
+                outline.Transform(rg.Transform.Translation(0, 0, -z0))
+        except Exception: pass
+        attrs = Rhino.DocObjects.ObjectAttributes()
+        attrs.LayerIndex = layer
+        _attach_meta(attrs, element_id, "decke_outline", geschoss_id,
+                     dicke, uk_over, ok_over, "mid")
+        outline_id = doc.Objects.AddCurve(outline, attrs)
+        if outline_id == System.Guid.Empty:
+            print("[ELEMENTE] Decke AddCurve fehlgeschlagen"); return
+        _regenerate_element(doc, element_id)
+        doc.Views.Redraw()
+        print("[ELEMENTE] Decke erzeugt: {}".format(element_id))
+
+    def _cmd_create_dach(self, p):
+        """Pultdach-Erzeugung mit Modus-Auswahl: Polylinie / Rechteck /
+        Rechteck-3-Punkte. Die ERSTE Kante (Punkt 1 → Punkt 2) ist die
+        Traufkante. Neigung + Dicke per Command-Option."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        geschoss = p.get("geschoss") or _active_geschoss_id(doc)
+        if not geschoss:
+            print("[ELEMENTE] Kein Geschoss aktiv"); return
+        d_in = p.get("dicke")
+        try: dicke = float(d_in) if d_in else _last("dach_dicke", 0.20)
+        except Exception: dicke = _last("dach_dicke", 0.20)
+        n_in = p.get("neigung")
+        try: neigung = float(n_in) if n_in else _last("dach_neigung", 30.0)
+        except Exception: neigung = _last("dach_neigung", 30.0)
+        uk_over = p.get("ukOverride", "")
+
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception as ex:
+            print("[ELEMENTE] Imports:", ex); return
+
+        modi  = ["Polylinie", "Rechteck", "Rechteck3Punkte"]
+        modus = p.get("modus") or _last("dach_modus", "Polylinie")
+        if modus not in modi: modus = "Polylinie"
+
+        typen = ["Pult", "Sattel", "Walm", "Mansarde"]
+        dach_typ = p.get("dachTyp") or _last("dach_typ", "Pult")
+        if dach_typ not in typen: dach_typ = "Pult"
+        # Mansarde-spezifische Defaults
+        try: neigung_unten = float(p.get("neigungUnten") or _last("dach_neigung_unten", 60.0))
+        except Exception: neigung_unten = 60.0
+        try: knick_h = float(p.get("knickH") or _last("dach_knick_h", 2.0))
+        except Exception: knick_h = 2.0
+        varianten = ["Walm", "Giebel", "Walm-Giebel"]
+        variante_code_map = {"Walm": "walm", "Giebel": "giebel",
+                              "Walm-Giebel": "walm_giebel"}
+        dach_variante = p.get("dachVariante") or _last("dach_variante", "Walm")
+        if dach_variante not in varianten: dach_variante = "Walm"
+
+        def _build_prompt(base):
+            extra = ""
+            if dach_typ == "Mansarde":
+                extra = ", Variante={}".format(dach_variante)
+            return "{} [Typ={}{}, Modus={}, Neigung={:.1f}°, Dicke={:.3f}]".format(
+                base, dach_typ, extra, modus, neigung, dicke)
+
+        first_pt = None
+        try:
+            while True:
+                gp = ric.GetPoint()
+                gp.SetCommandPrompt(_build_prompt("Dach: Startpunkt (1. Kante = Traufe)"))
+                opt_typ   = gp.AddOptionList("Typ", typen, typen.index(dach_typ))
+                opt_var = None
+                if dach_typ == "Mansarde":
+                    opt_var = gp.AddOptionList("Variante", varianten,
+                                                varianten.index(dach_variante))
+                opt_modus = gp.AddOptionList("Modus", modi, modi.index(modus))
+                opt_n = gp.AddOption("Neigung")
+                opt_d = gp.AddOption("Dicke")
+                res = gp.Get()
+                if res == GetResult.Option:
+                    if gp.OptionIndex() == opt_typ:
+                        try: dach_typ = typen[gp.Option().CurrentListOptionIndex]
+                        except Exception: pass
+                    elif opt_var is not None and gp.OptionIndex() == opt_var:
+                        try: dach_variante = varianten[gp.Option().CurrentListOptionIndex]
+                        except Exception: pass
+                    elif gp.OptionIndex() == opt_modus:
+                        try: modus = modi[gp.Option().CurrentListOptionIndex]
+                        except Exception: pass
+                    elif gp.OptionIndex() == opt_n:
+                        try:
+                            gn = ric.GetNumber()
+                            gn.SetCommandPrompt("Dach-Neigung in Grad")
+                            gn.SetDefaultNumber(neigung)
+                            gn.SetLowerLimit(0.0, False)
+                            gn.SetUpperLimit(89.0, False)
+                            if gn.Get() == GetResult.Number:
+                                neigung = float(gn.Number())
+                        except Exception as ex: print("[ELEMENTE] GetNumber:", ex)
+                    elif gp.OptionIndex() == opt_d:
+                        try:
+                            gn = ric.GetNumber()
+                            gn.SetCommandPrompt("Dach-Dicke")
+                            gn.SetDefaultNumber(dicke)
+                            gn.SetLowerLimit(0.01, False)
+                            if gn.Get() == GetResult.Number:
+                                dicke = float(gn.Number())
+                        except Exception as ex: print("[ELEMENTE] GetNumber:", ex)
+                    continue
+                if res != GetResult.Point: return
+                first_pt = gp.Point()
+                break
+        except Exception as ex:
+            print("[ELEMENTE] dach first-point:", ex); return
+
+        outline_curve = None
+        try:
+            if modus == "Polylinie":
+                outline_curve = self._collect_polyline_outline(doc, first_pt)
+            elif modus == "Rechteck":
+                outline_curve = _collect_rectangle(doc, first_pt)
+            elif modus == "Rechteck3Punkte":
+                outline_curve = _collect_rectangle_3pt(doc, first_pt)
+        except Exception as ex:
+            print("[ELEMENTE] dach collect:", ex); return
+
+        if outline_curve is None or not outline_curve.IsClosed:
+            print("[ELEMENTE] keine gueltige Outline"); return
+        # Sattel/Walm/Mansarde brauchen Rechteck-Outline. Sonst Fallback Pult.
+        dt_code = dach_typ.lower()
+        if dt_code in ("sattel", "walm", "mansarde"):
+            try:
+                ok, poly = outline_curve.TryGetPolyline()
+                if not ok or poly is None or poly.Count != 5:
+                    print("[ELEMENTE] {} braucht Rechteck-Outline — Fallback Pult".format(dach_typ))
+                    dt_code = "pult"
+            except Exception: dt_code = "pult"
+        self._make_dach_from_outline(doc, outline_curve, geschoss, dicke,
+                                      neigung, 0, uk_over, dt_code,
+                                      neigung_unten=neigung_unten,
+                                      knick_h=knick_h,
+                                      dach_variante=variante_code_map.get(
+                                          dach_variante, "walm"))
+        _save_last(dach_dicke=dicke, dach_neigung=neigung,
+                   dach_modus=modus, dach_typ=dach_typ,
+                   dach_neigung_unten=neigung_unten, dach_knick_h=knick_h,
+                   dach_variante=dach_variante)
+        self._send_state()
+
+    def _make_dach_from_outline(self, doc, outline_curve, geschoss_id, dicke,
+                                 neigung, eave_idx, uk_over, dach_typ="pult",
+                                 neigung_unten=60.0, knick_h=2.0,
+                                 dach_variante="walm"):
+        """Dach aus geschlossener Outline-PolylineCurve."""
+        element_id = "dach_" + uuid.uuid4().hex[:10]
+        g = _geschoss_by_id(doc, geschoss_id)
+        geschoss_name = g.get("name", "EG") if g else "EG"
+        layer = _ensure_layer(doc, _layer_path_dach(doc, geschoss_name))
+        outline = outline_curve.DuplicateCurve()
+        try:
+            z0 = outline.PointAtStart.Z
+            if abs(z0) > 1e-6:
+                outline.Transform(rg.Transform.Translation(0, 0, -z0))
+        except Exception: pass
+        attrs = Rhino.DocObjects.ObjectAttributes()
+        attrs.LayerIndex = layer
+        _attach_meta(attrs, element_id, "dach_outline", geschoss_id,
+                     dicke, uk_over, "", "mid",
+                     neigung=neigung, eave_idx=eave_idx, dach_typ=dach_typ,
+                     neigung_unten=neigung_unten, knick_h=knick_h,
+                     dach_variante=dach_variante)
+        outline_id = doc.Objects.AddCurve(outline, attrs)
+        if outline_id == System.Guid.Empty:
+            print("[ELEMENTE] Dach AddCurve fehlgeschlagen"); return
+        _regenerate_element(doc, element_id)
+        doc.Views.Redraw()
+        print("[ELEMENTE] Dach erzeugt: {} ({}, neigung={}°)".format(
+            element_id, dach_typ, neigung))
+
+
+    def _cmd_create_oeffnung(self, p, typ):
+        """Fenster/Tuer-Erzeugung: User klickt auf eine Wand-Achse, dann
+        einen Punkt darauf. Punkt-Position wird auf die Achse projiziert.
+        Optionen: Breite, Hoehe, (Bruestung nur fuer Fenster)."""
+        if typ not in ("fenster", "tuer"): return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception as ex:
+            print("[ELEMENTE] Imports:", ex); return
+
+        # Defaults
+        if typ == "fenster":
+            b_def  = _last("fenster_breite",  1.20)
+            h_def  = _last("fenster_hoehe",   1.40)
+            br_def = _last("fenster_brueest", 0.90)
+        else:
+            b_def  = _last("tuer_breite", 0.90)
+            h_def  = _last("tuer_hoehe",  2.10)
+            br_def = 0.0
+        try: breite  = float(p.get("breite")  or b_def)
+        except Exception: breite = b_def
+        try: hoehe   = float(p.get("hoehe")   or h_def)
+        except Exception: hoehe = h_def
+        if typ == "fenster":
+            try: brueest = float(p.get("brueest") or br_def)
+            except Exception: brueest = br_def
+        else:
+            brueest = 0.0
+
+        # 1) Wand-Achse waehlen
+        try:
+            gw = ric.GetObject()
+            gw.SetCommandPrompt("Wand-Achse fuer {} waehlen".format(
+                "Fenster" if typ == "fenster" else "Tuer"))
+            gw.GeometryFilter = Rhino.DocObjects.ObjectType.Curve
+            def _filter_wand(rhObj, geom, ci):
+                m = _read_meta(rhObj)
+                return m is not None and m.get("type") == "wand_axis"
+            gw.SetCustomGeometryFilter(_filter_wand)
+            res = gw.Get()
+            if res != GetResult.Object: return
+            wall_obj = gw.Object(0).Object()
+        except Exception as ex:
+            print("[ELEMENTE] Wand-Auswahl:", ex); return
+        wall_meta = _read_meta(wall_obj)
+        if wall_meta is None: return
+        axis_curve = wall_obj.Geometry
+        if not isinstance(axis_curve, rg.Curve): return
+
+        # 2) Punkt auf der Achse — constrained an die Wand-Achse
+        try:
+            while True:
+                gp = ric.GetPoint()
+                prompt = "Position fuer {} [B={:.2f}, H={:.2f}".format(
+                    "Fenster" if typ == "fenster" else "Tuer", breite, hoehe)
+                if typ == "fenster":
+                    prompt += ", Br={:.2f}".format(brueest)
+                prompt += "]"
+                gp.SetCommandPrompt(prompt)
+                try: gp.Constrain(axis_curve, False)
+                except Exception: pass
+                opt_b  = gp.AddOption("Breite")
+                opt_h  = gp.AddOption("Hoehe")
+                opt_br = gp.AddOption("Bruestung") if typ == "fenster" else None
+                rp = gp.Get()
+                if rp == GetResult.Option:
+                    idx = gp.OptionIndex()
+                    if idx == opt_b:
+                        gn = ric.GetNumber()
+                        gn.SetCommandPrompt("Breite")
+                        gn.SetDefaultNumber(breite)
+                        gn.SetLowerLimit(0.05, False)
+                        if gn.Get() == GetResult.Number: breite = float(gn.Number())
+                    elif idx == opt_h:
+                        gn = ric.GetNumber()
+                        gn.SetCommandPrompt("Hoehe")
+                        gn.SetDefaultNumber(hoehe)
+                        gn.SetLowerLimit(0.05, False)
+                        if gn.Get() == GetResult.Number: hoehe = float(gn.Number())
+                    elif opt_br is not None and idx == opt_br:
+                        gn = ric.GetNumber()
+                        gn.SetCommandPrompt("Bruestungshoehe")
+                        gn.SetDefaultNumber(brueest)
+                        gn.SetLowerLimit(0.0, True)
+                        if gn.Get() == GetResult.Number: brueest = float(gn.Number())
+                    continue
+                if rp != GetResult.Point: return
+                click_pt = gp.Point()
+                break
+        except Exception as ex:
+            print("[ELEMENTE] Oeffnung point:", ex); return
+
+        # Auf Achse projizieren (Constrain garantiert das eigentlich schon)
+        try:
+            ok, t = axis_curve.ClosestPoint(click_pt)
+            if not ok: return
+            on_axis = axis_curve.PointAt(t)
+        except Exception as ex:
+            print("[ELEMENTE] ClosestPoint:", ex); return
+
+        # Point-Objekt mit Metadaten anlegen
+        prefix = "fenster_" if typ == "fenster" else "tuer_"
+        oeff_id = prefix + uuid.uuid4().hex[:10]
+        geschoss = wall_meta["geschoss"]
+        g = _geschoss_by_id(doc, geschoss)
+        geschoss_name = g.get("name", "EG") if g else "EG"
+        layer = _ensure_layer(doc, _layer_path_axis(doc, geschoss_name))
+
+        # Entwurfs-Defaults pro Typ
+        is_fenster = (typ == "fenster")
+        rahmen_b_def = _last("oeff_rahmen_b", 0.06)
+        rahmen_t_def = _last("oeff_rahmen_tiefe", 0.08)
+        rahmen_p_def = _last("oeff_rahmen_pos", "mid")
+        fluegel_def  = _last("{}_fluegel".format(typ), 2 if is_fenster else 1)
+        simsa_def    = "standard" if is_fenster else "ohne"
+        simsi_def    = "standard" if is_fenster else "ohne"
+        glas_def     = is_fenster
+        referenz_def = _last("oeff_referenz", "mid")
+
+        attrs = Rhino.DocObjects.ObjectAttributes()
+        attrs.LayerIndex = layer
+        _attach_meta(attrs, oeff_id, "oeffnung_point", geschoss,
+                     wall_meta["dicke"], "", "",
+                     oeff_typ=typ, oeff_parent=wall_meta["id"],
+                     oeff_breite=breite, oeff_hoehe=hoehe,
+                     oeff_brueest=brueest,
+                     oeff_rahmen_b=rahmen_b_def,
+                     oeff_rahmen_tiefe=rahmen_t_def,
+                     oeff_rahmen_pos=rahmen_p_def,
+                     oeff_fluegel=fluegel_def,
+                     oeff_sims_aus=simsa_def,
+                     oeff_sims_in=simsi_def,
+                     oeff_glas=glas_def,
+                     oeff_referenz=referenz_def)
+        new_id = doc.Objects.AddPoint(on_axis, attrs)
+        if new_id == System.Guid.Empty:
+            print("[ELEMENTE] AddPoint fehlgeschlagen"); return
+
+        # Last-used
+        if typ == "fenster":
+            _save_last(fenster_breite=breite, fenster_hoehe=hoehe,
+                       fenster_brueest=brueest)
+        else:
+            _save_last(tuer_breite=breite, tuer_hoehe=hoehe)
+
+        # Eltern-Wand regen
+        _regenerate_element(doc, wall_meta["id"])
+        doc.Views.Redraw()
+        print("[ELEMENTE] {} erzeugt: {} an Wand {}".format(
+            "Fenster" if typ == "fenster" else "Tuer", oeff_id, wall_meta["id"]))
+        self._send_state()
+
+    def _cmd_create_treppe(self, p):
+        """Treppen-Erzeugung. Hoehe automatisch aus Geschoss-OKFF-Differenz.
+        treppeArt aus Payload: 'gerade' (2 Punkte) | 'l' (3 Punkte mit Eck)."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        treppe_art = p.get("treppeArt") or "gerade"
+        if treppe_art not in _TREPPE_ARTEN: treppe_art = "gerade"
+        geschoss_start = p.get("geschoss") or _active_geschoss_id(doc)
+        if not geschoss_start:
+            print("[ELEMENTE] Kein Geschoss aktiv"); return
+        try:
+            import Rhino.Input.Custom as ric
+            from Rhino.Input import GetResult
+        except Exception as ex:
+            print("[ELEMENTE] Imports:", ex); return
+
+        # Zielgeschoss-Default: das naechste Geschoss vom gleichen Typ in der
+        # Liste, oder None falls keins existiert.
+        geschosse = _load_geschosse(doc)
+        gs = _geschoss_by_id(doc, geschoss_start)
+        if gs is None:
+            print("[ELEMENTE] Startgeschoss nicht gefunden"); return
+        geschoss_end = p.get("geschossEnd") or ""
+        if not geschoss_end:
+            # naechstes Geschoss > start_okff
+            try:
+                start_okff = float(gs.get("okff", 0.0))
+                candidates = []
+                for g in geschosse:
+                    if not isinstance(g, dict): continue
+                    if g.get("type") != "grundriss": continue
+                    if g.get("id") == geschoss_start: continue
+                    try: o = float(g.get("okff", 0.0))
+                    except Exception: continue
+                    if o > start_okff + 1e-6:
+                        candidates.append((o, g.get("id", "")))
+                candidates.sort()
+                if candidates:
+                    geschoss_end = candidates[0][1]
+            except Exception: pass
+        g_end = _geschoss_by_id(doc, geschoss_end) if geschoss_end else None
+
+        # Defaults
+        try: breite = float(p.get("breite") or _last("treppe_breite", 1.0))
+        except Exception: breite = 1.0
+        referenz = p.get("referenz") or _last("treppe_referenz", "mid")
+        if referenz not in ("mid", "links", "rechts"): referenz = "mid"
+        # N: bei bekannter Hoehe ~S=0.18 berechnen
+        try: uk = float(gs.get("okff", 0.0))
+        except Exception: uk = 0.0
+        if g_end is not None:
+            try: ok = float(g_end.get("okff", uk + 3.0))
+            except Exception: ok = uk + 3.0
+        else:
+            try: ok = uk + float(gs.get("hoehe", 3.0))
+            except Exception: ok = uk + 3.0
+        H = max(0.001, ok - uk)
+        n_default = int(round(H / 0.18))
+        if n_default < 2: n_default = 2
+        try: n_stufen = int(p.get("nStufen") or _last("treppe_n", n_default))
+        except Exception: n_stufen = n_default
+        if n_stufen < 2: n_stufen = 2
+
+        # Schrittmass-Regel: Default "regel" (Lauflinie wird auf optimale
+        # Laenge gezwungen). User kann auf "frei" stellen.
+        regel_mode = _last("treppe_regel", "regel")
+        if regel_mode not in ("frei", "regel"): regel_mode = "regel"
+        # Soll-Werte (Editable in der Treppe-Property-Card) aus sticky laden.
+        # Default falls noch nichts gesetzt: 0.15-0.20 / 0.21-0.35 / 0.60-0.65.
+        soll_last = _last("treppe_soll", None)
+        soll = dict(_TREPPE_SOLL_DEFAULT)
+        if soll_last:
+            try:
+                import json
+                parsed = json.loads(soll_last) if isinstance(soll_last, str) else soll_last
+                if isinstance(parsed, dict):
+                    for k in ("s", "a", "sa"):
+                        v = parsed.get(k)
+                        if isinstance(v, list) and len(v) >= 3:
+                            soll[k] = [float(v[0]), float(v[1]), bool(v[2])]
+            except Exception: pass
+
+        # Lauflaengen-Range fuer aktuelle N & H aus enabled Soll-Werten:
+        # - 2S+A in [sa_lo, sa_hi] (enabled) → A in [sa_lo-2S, sa_hi-2S]
+        # - A in [a_lo, a_hi] (enabled)
+        # → A_range = Schnitt aller Constraints, L_range = N*A_range
+        # Optimaler Mittelwert: L_opt = 0.63*N - 2*H
+        def _l_range(n, h):
+            n = max(1, int(n))
+            s = float(h) / n
+            a_lo, a_hi = 0.05, 2.0  # weit-offene Defaults
+            if soll["sa"][2]:  # 2S+A enabled
+                a_lo = max(a_lo, soll["sa"][0] - 2 * s)
+                a_hi = min(a_hi, soll["sa"][1] - 2 * s)
+            if soll["a"][2]:   # A enabled
+                a_lo = max(a_lo, soll["a"][0])
+                a_hi = min(a_hi, soll["a"][1])
+            if a_lo > a_hi:  # widerspruechliche Constraints — gib Range zurueck zentriert
+                mid = (a_lo + a_hi) * 0.5
+                a_lo = a_hi = mid
+            return (n * a_lo, n * a_hi)
+        def _l_optimal(n, h):
+            lo, hi = _l_range(n, h)
+            return max(0.3, (lo + hi) * 0.5)
+
+        # Zwei Punkte fuer die Lauflinie einsammeln
+        first_pt = None
+        try:
+            while True:
+                gp = ric.GetPoint()
+                end_name = (g_end.get("name") if g_end else "(naechste Ebene)")
+                L_opt_show = _l_optimal(n_stufen, H)
+                gp.SetCommandPrompt(
+                    "Treppe: Startpunkt  [Hoehe {:.2f}, Stufen={}, Breite={:.2f}, Ref={}, Modus={}{}, Ziel={}]".format(
+                        H, n_stufen, breite, referenz, regel_mode,
+                        " (L_opt={:.2f})".format(L_opt_show) if regel_mode == "regel" else "",
+                        end_name))
+                opt_n = gp.AddOption("Stufen")
+                opt_b = gp.AddOption("Breite")
+                opt_ref = gp.AddOptionList("Referenz",
+                                             ["Links", "Mittig", "Rechts"],
+                                             {"links":0, "mid":1, "rechts":2}.get(referenz, 1))
+                # Regel-Option nur fuer gerade Treppen (bei L sind 2 Segmente
+                # mit Podest dazwischen — die Regel laesst sich nicht trivial
+                # auf 2 Klicks aufteilen).
+                opt_reg = -1
+                if treppe_art != "l":
+                    opt_reg = gp.AddOptionList("Regel",
+                                                 ["frei", "Schrittmass"],
+                                                 1 if regel_mode == "regel" else 0)
+                res = gp.Get()
+                if res == GetResult.Option:
+                    idx = gp.OptionIndex()
+                    if idx == opt_n:
+                        gn = ric.GetInteger()
+                        gn.SetCommandPrompt("Anzahl Stufen (Steigungen)")
+                        gn.SetDefaultInteger(n_stufen)
+                        gn.SetLowerLimit(2, False)
+                        gn.SetUpperLimit(40, False)
+                        if gn.Get() == GetResult.Number: n_stufen = int(gn.Number())
+                    elif idx == opt_b:
+                        gn = ric.GetNumber()
+                        gn.SetCommandPrompt("Treppen-Breite")
+                        gn.SetDefaultNumber(breite)
+                        gn.SetLowerLimit(0.3, False)
+                        if gn.Get() == GetResult.Number: breite = float(gn.Number())
+                    elif idx == opt_ref:
+                        try:
+                            v = ["links", "mid", "rechts"][gp.Option().CurrentListOptionIndex]
+                            referenz = v
+                        except Exception: pass
+                    elif opt_reg >= 0 and idx == opt_reg:
+                        try:
+                            v = ["frei", "regel"][gp.Option().CurrentListOptionIndex]
+                            regel_mode = v
+                        except Exception: pass
+                    continue
+                if res != GetResult.Point: return
+                first_pt = gp.Point()
+                break
+        except Exception as ex:
+            print("[ELEMENTE] treppe first-pt:", ex); return
+
+        # Zweiter Punkt mit DynamicDraw. Bei Regel-Modus: Maus gibt nur
+        # die RICHTUNG vor — die Lauflinien-Laenge wird auf den optimalen
+        # Wert fixiert (wie Rhinos Rotate-Befehl). Kein Kreis-Constraint
+        # — der wuerde blockieren wenn die Maus weit weg ist.
+        gp2 = ric.GetPoint()
+        L_opt = _l_optimal(n_stufen, H)
+        if treppe_art == "l":
+            # L-Treppe: 2. Klick ist der Podest-Eck. Live-Preview zeigt
+            # N1/N2 fuer die Mausposition. Regel-Modus aus (zu komplex).
+            gp2.SetCommandPrompt(
+                "L-Treppe: Eck-Punkt (Podest-Mitte)  [Stufen={}, Breite={:.2f}]".format(
+                    n_stufen, breite))
+            gp2.SetBasePoint(first_pt, True)
+            gp2.DynamicDraw += _make_treppe_l_corner_preview(
+                first_pt, breite, referenz, n_stufen, H)
+        elif treppe_art == "wendel":
+            # Wendel: 1. Klick = Mittelpunkt, 2. Klick = Start (Radius
+            # + Startwinkel). Preview: Linie center→Maus + Kreis.
+            gp2.SetCommandPrompt(
+                "Wendeltreppe: Start der Lauflinie (definiert Radius)  [Stufen={}, Breite={:.2f}]".format(
+                    n_stufen, breite))
+            gp2.SetBasePoint(first_pt, True)
+            gp2.DrawLineFromPoint(first_pt, True)
+        elif regel_mode == "regel":
+            L_min, L_max = _l_range(n_stufen, H)
+            same = abs(L_max - L_min) < 1e-4
+            if same:
+                gp2.SetCommandPrompt(
+                    "Treppe: Richtung (Lauflaenge {:.2f} m, Schrittmass-Regel)".format(L_min))
+            else:
+                gp2.SetCommandPrompt(
+                    "Treppe: Endpunkt (Lauflaenge {:.2f}–{:.2f} m, Schrittmass-Regel)".format(
+                        L_min, L_max))
+            gp2.SetBasePoint(first_pt, True)
+            if same:
+                gp2.DynamicDraw += _make_treppe_preview_handler(
+                    first_pt, breite, referenz, n_stufen, fixed_length=L_min)
+            else:
+                gp2.DynamicDraw += _make_treppe_preview_handler(
+                    first_pt, breite, referenz, n_stufen,
+                    min_length=L_min, max_length=L_max)
+        else:
+            gp2.SetCommandPrompt(
+                "Treppe: Endpunkt der Lauflinie (frei)  [Stufen={}, Breite={:.2f}, Ref={}]".format(
+                    n_stufen, breite, referenz))
+            gp2.SetBasePoint(first_pt, True)
+            gp2.DynamicDraw += _make_treppe_preview_handler(
+                first_pt, breite, referenz, n_stufen)
+        if gp2.Get() != GetResult.Point: return
+        clicked = gp2.Point()
+        if regel_mode == "regel" and treppe_art == "gerade":
+            dx = clicked.X - first_pt.X
+            dy = clicked.Y - first_pt.Y
+            dist = (dx * dx + dy * dy) ** 0.5
+            if dist < 1e-4:
+                print("[ELEMENTE] Keine Richtung gewaehlt"); return
+            L_min2, L_max2 = _l_range(n_stufen, H)
+            # Clamp Mauspos-Distanz in die Range (oder reskaliere auf fix
+            # wenn Range gleich null).
+            if abs(L_max2 - L_min2) < 1e-4:
+                final_L = L_min2
+            else:
+                final_L = max(L_min2, min(L_max2, dist))
+            second_pt = rg.Point3d(first_pt.X + dx / dist * final_L,
+                                     first_pt.Y + dy / dist * final_L,
+                                     first_pt.Z)
+        else:
+            second_pt = clicked
+
+        # L-Treppe: dritter Punkt einsammeln (Endpunkt nach dem Eck)
+        if treppe_art == "l":
+            gp3 = ric.GetPoint()
+            gp3.SetCommandPrompt(
+                "L-Treppe: Endpunkt nach dem Podest  [Stufen={}, Breite={:.2f}]".format(
+                    n_stufen, breite))
+            gp3.SetBasePoint(second_pt, True)
+            gp3.DynamicDraw += _make_treppe_preview_handler(
+                second_pt, breite, referenz, max(1, n_stufen // 2))
+            if gp3.Get() != GetResult.Point: return
+            third_pt = gp3.Point()
+            p_first = rg.Point3d(first_pt.X, first_pt.Y, 0)
+            p_corner = rg.Point3d(second_pt.X, second_pt.Y, 0)
+            p_end = rg.Point3d(third_pt.X, third_pt.Y, 0)
+            pl = rg.Polyline([p_first, p_corner, p_end])
+            line = rg.PolylineCurve(pl)
+            if line.GetLength() < 0.2:
+                print("[ELEMENTE] L-Lauflinie zu kurz"); return
+        elif treppe_art == "wendel":
+            # Wendel: 3. Klick = Endpunkt (Sweep-Winkel + Drehrichtung).
+            # Im Regel-Modus wird der Sweep auf den durch r_lauf + Soll
+            # zulaessigen Bereich geclampt.
+            gp3 = ric.GetPoint()
+            gp3.SetCommandPrompt(
+                "Wendeltreppe: Endpunkt der Lauflinie (definiert Drehwinkel)  [Stufen={}, Modus={}]".format(
+                    n_stufen, regel_mode))
+            gp3.SetBasePoint(first_pt, True)
+            gp3.DynamicDraw += _make_treppe_wendel_preview(
+                first_pt, second_pt, breite, referenz, n_stufen,
+                total_h=H, soll=soll, regel_mode=regel_mode)
+            if gp3.Get() != GetResult.Point: return
+            third_pt = gp3.Point()
+            p_center = rg.Point3d(first_pt.X, first_pt.Y, 0)
+            p_start_w = rg.Point3d(second_pt.X, second_pt.Y, 0)
+            p_end_w = rg.Point3d(third_pt.X, third_pt.Y, 0)
+
+            # Sweep + (im Regel-Modus) clampen auf gueltigen Bereich.
+            # Dann den Endpunkt entsprechend reskalieren.
+            import math
+            a_s_w, dlt_w = _wendel_sweep(p_center, p_start_w, p_end_w)
+            if regel_mode == "regel":
+                r_lauf = math.sqrt(
+                    (p_start_w.X - p_center.X) ** 2 +
+                    (p_start_w.Y - p_center.Y) ** 2)
+                try:
+                    s_lo, s_hi = _wendel_sweep_range(
+                        r_lauf, breite, referenz, n_stufen, H, soll)
+                except Exception:
+                    s_lo, s_hi = 0.05, 2.0 * math.pi
+                raw = abs(dlt_w)
+                if raw < s_lo: clamped = s_lo
+                elif raw > s_hi: clamped = s_hi
+                else: clamped = raw
+                dlt_clamped = clamped * (1.0 if dlt_w >= 0 else -1.0)
+                # Neuen Endpunkt auf Kreis r_lauf bei Winkel a_s_w + dlt_clamped
+                a_final = a_s_w + dlt_clamped
+                p_end_w = rg.Point3d(
+                    p_center.X + r_lauf * math.cos(a_final),
+                    p_center.Y + r_lauf * math.sin(a_final), 0)
+                # Wichtig: dlt_w fuer den nachfolgenden < 0.05 Check aktualisieren
+                dlt_w = dlt_clamped
+            if abs(dlt_w) < 0.05:
+                print("[ELEMENTE] Wendel-Sweep zu klein"); return
+            pl = rg.Polyline([p_center, p_start_w, p_end_w])
+            line = rg.PolylineCurve(pl)
+        else:
+            line = rg.LineCurve(rg.Point3d(first_pt.X, first_pt.Y, 0),
+                                 rg.Point3d(second_pt.X, second_pt.Y, 0))
+            if line.GetLength() < 0.1:
+                print("[ELEMENTE] Lauflinie zu kurz"); return
+
+        # Element anlegen
+        treppe_id = "treppe_" + uuid.uuid4().hex[:10]
+        geschoss_name = gs.get("name", "EG")
+        layer = _ensure_layer(doc, _layer_path_treppe(doc, geschoss_name))
+        attrs = Rhino.DocObjects.ObjectAttributes()
+        attrs.LayerIndex = layer
+        modus_def = _last("treppe_modus", "flach")
+        if modus_def not in _TREPPE_MODI: modus_def = "flach"
+        try: lauf_d_def = float(_last("treppe_lauf_d", 0.18))
+        except Exception: lauf_d_def = 0.18
+        _attach_meta(attrs, treppe_id, "treppe_axis", geschoss_start,
+                     breite, "", "", "mid",
+                     geschoss_end=geschoss_end,
+                     treppe_breite=breite,
+                     treppe_n=n_stufen,
+                     treppe_referenz=referenz,
+                     treppe_modus=modus_def,
+                     treppe_lauf_d=lauf_d_def,
+                     treppe_art=treppe_art)
+        new_id = doc.Objects.AddCurve(line, attrs)
+        if new_id == System.Guid.Empty:
+            print("[ELEMENTE] AddCurve fehlgeschlagen"); return
+        save_kwargs = dict(treppe_breite=breite, treppe_n=n_stufen,
+                            treppe_referenz=referenz,
+                            treppe_modus=modus_def,
+                            treppe_lauf_d=lauf_d_def,
+                            treppe_art=treppe_art)
+        # regel_mode fuer gerade + wendel speichern (L hat keinen
+        # sinnvollen Regel-Modus — wuerde sonst die User-Praeferenz
+        # auf "frei" zuruecksetzen).
+        if treppe_art in ("gerade", "wendel"):
+            save_kwargs["treppe_regel"] = regel_mode
+        _save_last(**save_kwargs)
+        _regenerate_element(doc, treppe_id)
+        doc.Views.Redraw()
+        print("[ELEMENTE] Treppe erzeugt: {}".format(treppe_id))
+        self._send_state()
+
+    def _update_wall(self, p):
+        """Properties eines Elements aendern (Wand/Decke/Dach/Oeffnung).
+        Volumen wird anschliessend regeneriert."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        wall_id = p.get("id")
+        if not wall_id: return
+        axis_obj, old_meta = _find_source(doc, wall_id)
+        if axis_obj is None or old_meta is None: return
+        # Treppe: Breite/Anzahl Stufen/Referenz/Zielgeschoss
+        if old_meta["type"] == "treppe_axis":
+            try: tb = float(p.get("breite", old_meta.get("treppe_breite", 1.0)))
+            except Exception: tb = old_meta.get("treppe_breite", 1.0)
+            try: tn = int(p.get("nStufen", old_meta.get("treppe_n", 15)))
+            except Exception: tn = old_meta.get("treppe_n", 15)
+            if tn < 2: tn = 2
+            tref = p.get("treppeReferenz", old_meta.get("treppe_referenz", "mid"))
+            if tref not in ("mid", "links", "rechts"): tref = "mid"
+            tmod = p.get("treppeModus", old_meta.get("treppe_modus", "flach"))
+            if tmod not in _TREPPE_MODI: tmod = "flach"
+            try: tld = float(p.get("laufD", old_meta.get("treppe_lauf_d", 0.18)))
+            except Exception: tld = old_meta.get("treppe_lauf_d", 0.18)
+            gend = p.get("geschossEnd", old_meta.get("geschoss_end", ""))
+            gstart = p.get("geschoss", old_meta["geschoss"])
+            attrs = axis_obj.Attributes
+            if gstart != old_meta["geschoss"]:
+                gs = _geschoss_by_id(doc, gstart)
+                gn = gs.get("name", "EG") if gs else "EG"
+                attrs.LayerIndex = _ensure_layer(doc, _layer_path_treppe(doc, gn))
+            # Custom H + Soll-Werte
+            h_over = p.get("hOver", old_meta.get("treppe_h_over", ""))
+            if h_over is None: h_over = ""
+            if isinstance(h_over, (int, float)): h_over = "{:.4f}".format(float(h_over))
+            soll_in = p.get("soll", old_meta.get("treppe_soll", _TREPPE_SOLL_DEFAULT))
+            # Auf Form normieren
+            if not isinstance(soll_in, dict): soll_in = dict(_TREPPE_SOLL_DEFAULT)
+            soll_norm = {}
+            for k, dv in _TREPPE_SOLL_DEFAULT.items():
+                v = soll_in.get(k, dv)
+                if isinstance(v, list) and len(v) >= 3:
+                    try: soll_norm[k] = [float(v[0]), float(v[1]), bool(v[2])]
+                    except Exception: soll_norm[k] = list(dv)
+                else: soll_norm[k] = list(dv)
+            _attach_meta(attrs, wall_id, "treppe_axis",
+                         gstart, tb, "", "", "mid",
+                         geschoss_end=gend,
+                         treppe_breite=tb,
+                         treppe_n=tn,
+                         treppe_referenz=tref,
+                         treppe_modus=tmod,
+                         treppe_lauf_d=tld,
+                         treppe_art=old_meta.get("treppe_art", "gerade"),
+                         treppe_h_over=h_over,
+                         treppe_soll=soll_norm)
+            # Persistenz fuer Creation Default
+            try:
+                import json
+                _save_last(treppe_soll=json.dumps(soll_norm))
+            except Exception: pass
+            axis_obj.Attributes = attrs
+            axis_obj.CommitChanges()
+            _regenerate_volume(doc, wall_id)
+            doc.Views.Redraw()
+            self._send_state()
+            return
+        # Oeffnung: Breite/Hoehe/Bruestung + Rahmen/Fluegel/Sims/Glas
+        if old_meta["type"] == "oeffnung_point":
+            try: breite = float(p.get("breite", old_meta.get("oeff_breite", 1.0)))
+            except Exception: breite = old_meta.get("oeff_breite", 1.0)
+            try: hoehe = float(p.get("hoehe", old_meta.get("oeff_hoehe", 1.4)))
+            except Exception: hoehe = old_meta.get("oeff_hoehe", 1.4)
+            otyp = old_meta.get("oeff_typ", "fenster")
+            if otyp == "fenster":
+                try: brueest = float(p.get("brueest", old_meta.get("oeff_brueest", 0.9)))
+                except Exception: brueest = old_meta.get("oeff_brueest", 0.9)
+            else:
+                brueest = 0.0
+            try: rahmen_b = float(p.get("rahmenB", old_meta.get("oeff_rahmen_b", 0.06)))
+            except Exception: rahmen_b = old_meta.get("oeff_rahmen_b", 0.06)
+            try: rahmen_t = float(p.get("rahmenTiefe", old_meta.get("oeff_rahmen_tiefe", 0.08)))
+            except Exception: rahmen_t = old_meta.get("oeff_rahmen_tiefe", 0.08)
+            rahmen_p = p.get("rahmenPos", old_meta.get("oeff_rahmen_pos", "mid"))
+            if rahmen_p not in _OEFF_RAHMEN_POS_OPTIONS: rahmen_p = "mid"
+            try: fluegel = int(p.get("fluegel", old_meta.get("oeff_fluegel", 1)))
+            except Exception: fluegel = old_meta.get("oeff_fluegel", 1)
+            if fluegel < 1: fluegel = 1
+            simsa = p.get("simsAus", old_meta.get("oeff_sims_aus", "standard" if otyp == "fenster" else "ohne"))
+            simsi = p.get("simsIn",  old_meta.get("oeff_sims_in",  "standard" if otyp == "fenster" else "ohne"))
+            # Legacy: bool von alter UI - in String konvertieren
+            if isinstance(simsa, bool): simsa = "standard" if simsa else "ohne"
+            if isinstance(simsi, bool): simsi = "standard" if simsi else "ohne"
+            if simsa not in _OEFF_SIMS_STYLES: simsa = "ohne"
+            if simsi not in _OEFF_SIMS_STYLES: simsi = "ohne"
+            glas  = bool(p.get("glas",     old_meta.get("oeff_glas",     otyp == "fenster")))
+            oref = p.get("oeffReferenz", old_meta.get("oeff_referenz", "mid"))
+            if oref not in _OEFF_REFERENZ_OPTIONS: oref = "mid"
+            attrs = axis_obj.Attributes
+            _attach_meta(attrs, wall_id, "oeffnung_point",
+                         old_meta["geschoss"], old_meta["dicke"],
+                         "", "", "mid",
+                         oeff_typ=otyp,
+                         oeff_parent=old_meta.get("oeff_parent", ""),
+                         oeff_breite=breite, oeff_hoehe=hoehe,
+                         oeff_brueest=brueest,
+                         oeff_rahmen_b=rahmen_b,
+                         oeff_rahmen_tiefe=rahmen_t,
+                         oeff_rahmen_pos=rahmen_p,
+                         oeff_fluegel=fluegel,
+                         oeff_sims_aus=simsa, oeff_sims_in=simsi,
+                         oeff_glas=glas,
+                         oeff_referenz=oref)
+            axis_obj.Attributes = attrs
+            axis_obj.CommitChanges()
+            parent_id = old_meta.get("oeff_parent", "")
+            if parent_id:
+                _regenerate_element(doc, parent_id)
+            doc.Views.Redraw()
+            self._send_state()
+            return
+        # Neue Werte mergen
+        geschoss = p.get("geschoss", old_meta["geschoss"])
+        try: dicke = float(p.get("dicke", old_meta["dicke"]))
+        except Exception: dicke = old_meta["dicke"]
+        uk_over = p.get("ukOverride", old_meta["uk_override"])
+        ok_over = p.get("okOverride", old_meta["ok_override"])
+        referenz = p.get("referenz", old_meta.get("referenz", "mid"))
+        if referenz not in ("mid", "left", "right"): referenz = "mid"
+        # Dach-spezifische Felder
+        try: neigung = float(p.get("neigung", old_meta.get("neigung", 30.0)))
+        except Exception: neigung = old_meta.get("neigung", 30.0)
+        try: eave_idx = int(p.get("eaveIdx", old_meta.get("eave_idx", 0)))
+        except Exception: eave_idx = old_meta.get("eave_idx", 0)
+        dach_typ = p.get("dachTyp", old_meta.get("dach_typ", "pult"))
+        if dach_typ not in ("pult", "sattel", "walm", "mansarde"): dach_typ = "pult"
+        try: neigung_unten = float(p.get("neigungUnten", old_meta.get("neigung_unten", 60.0)))
+        except Exception: neigung_unten = old_meta.get("neigung_unten", 60.0)
+        try: knick_h = float(p.get("knickH", old_meta.get("knick_h", 2.0)))
+        except Exception: knick_h = old_meta.get("knick_h", 2.0)
+        dach_variante = p.get("dachVariante", old_meta.get("dach_variante", "walm"))
+        if dach_variante not in ("walm", "giebel", "walm_giebel"): dach_variante = "walm"
+        # Source-Attributes updaten
+        attrs = axis_obj.Attributes
+        # Bei Geschoss-Wechsel: Layer wechseln (passend zum Element-Typ)
+        if geschoss != old_meta["geschoss"]:
+            g = _geschoss_by_id(doc, geschoss)
+            geschoss_name = g.get("name", "EG") if g else "EG"
+            if old_meta["type"] == "wand_axis":
+                attrs.LayerIndex = _ensure_layer(doc, _layer_path_axis(doc, geschoss_name))
+            elif old_meta["type"] == "decke_outline":
+                attrs.LayerIndex = _ensure_layer(doc, _layer_path_decke(doc, geschoss_name))
+            elif old_meta["type"] == "dach_outline":
+                attrs.LayerIndex = _ensure_layer(doc, _layer_path_dach(doc, geschoss_name))
+        _attach_meta(attrs, wall_id, old_meta["type"], geschoss, dicke,
+                     uk_over, ok_over, referenz,
+                     neigung=neigung, eave_idx=eave_idx, dach_typ=dach_typ,
+                     neigung_unten=neigung_unten, knick_h=knick_h,
+                     dach_variante=dach_variante)
+        axis_obj.Attributes = attrs
+        axis_obj.CommitChanges()
+        # Volumen regenerieren (Layer ggf. anpassen)
+        _regenerate_volume(doc, wall_id)
+        doc.Views.Redraw()
+        self._send_state()
+
+    def _delete_wall(self, wall_id):
+        """Achse + Volumen + Children loeschen. Bei Oeffnung wird die
+        Elternwand nach dem Loeschen regeneriert (Loch verschwindet)."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if not wall_id: return
+        # Check ob es eine Oeffnung ist
+        src_obj, src_meta = _find_source(doc, wall_id)
+        parent_id = None
+        if src_meta and src_meta["type"] == "oeffnung_point":
+            parent_id = src_meta.get("oeff_parent") or None
+        # Wenn eine Wand geloescht wird: zugehoerige Oeffnungen kaskadieren
+        cascade_ids = []
+        if src_meta and src_meta["type"] == "wand_axis":
+            for op_obj, op_meta in _find_openings_for_wall(doc, wall_id):
+                cascade_ids.append(op_meta["id"])
+        for cid in cascade_ids:
+            for obj, _m in _find_objects_by_wall_id(doc, cid):
+                try: doc.Objects.Delete(obj.Id, True)
+                except Exception: pass
+        # Haupt-Element loeschen
+        for obj, meta in _find_objects_by_wall_id(doc, wall_id):
+            try: doc.Objects.Delete(obj.Id, True)
+            except Exception as ex: print("[ELEMENTE] delete:", ex)
+        # Bei Oeffnung-Delete: Elternwand regen
+        if parent_id:
+            _regenerate_element(doc, parent_id)
+        doc.Views.Redraw()
+        self._send_state()
+
+    def _regenerate_all(self):
+        """Alle Elemente (Waende + Decken) neu generieren — nuetzlich nach
+        Geschoss-Aenderung."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        seen = set()
+        for obj in list(doc.Objects):
+            meta = _read_meta(obj)
+            if meta is None: continue
+            if meta["type"] not in SOURCE_TYPES: continue
+            if meta["id"] in seen: continue
+            seen.add(meta["id"])
+            _regenerate_element(doc, meta["id"])
+        doc.Views.Redraw()
+        self._send_state()
+
+
+# --- Event-Listener ---------------------------------------------------------
+
+# Re-Entry-Guard: wenn _regenerate_volume die Brep ersetzt, feuert das
+# Rhino-Event nochmal — wir wollen nicht in eine Schleife geraten.
+_REGEN_BUSY = "_elemente_regen_busy"
+
+# Pending-Regenerate-Queue: alle wall_ids die beim naechsten Idle-Tick
+# regeneriert werden sollen. Debounct mehrfache Replace-Events waehrend
+# eines Gumball-Drags.
+def _pending_set():
+    s = sc.sticky.get("elemente_pending_regen")
+    if s is None:
+        s = set()
+        sc.sticky["elemente_pending_regen"] = s
+    return s
+
+
+def _queue_regen(wall_id):
+    _pending_set().add(wall_id)
+
+
+def _on_object_replaced(sender, e):
+    """Wenn eine Wand-Achse verschoben/skaliert/sub-object-editiert wird
+    → Regeneration queuen (wird beim naechsten Idle-Tick ausgefuehrt)."""
+    if sc.sticky.get(_REGEN_BUSY): return
+    try:
+        # Beide Seiten probieren — manchmal verliert e.NewRhinoObject die
+        # UserStrings beim Replace-Roundtrip.
+        meta = None
+        try: meta = _read_meta(e.NewRhinoObject)
+        except Exception: pass
+        if meta is None:
+            try: meta = _read_meta(e.OldRhinoObject)
+            except Exception: pass
+        if meta is None or meta.get("type") not in SOURCE_TYPES:
+            return
+        try:
+            new_obj = e.NewRhinoObject
+            if new_obj and not _read_meta(new_obj):
+                attrs = new_obj.Attributes
+                _attach_meta(attrs, meta["id"], meta["type"], meta["geschoss"],
+                             meta["dicke"], meta["uk_override"], meta["ok_override"],
+                             meta.get("referenz", "mid"),
+                             neigung=meta.get("neigung"),
+                             eave_idx=meta.get("eave_idx"),
+                             dach_typ=meta.get("dach_typ"),
+                             neigung_unten=meta.get("neigung_unten"),
+                             knick_h=meta.get("knick_h"),
+                             dach_variante=meta.get("dach_variante"),
+                             oeff_typ=meta.get("oeff_typ") or None,
+                             oeff_parent=meta.get("oeff_parent") or None,
+                             oeff_breite=meta.get("oeff_breite"),
+                             oeff_hoehe=meta.get("oeff_hoehe"),
+                             oeff_brueest=meta.get("oeff_brueest"),
+                             oeff_rahmen_b=meta.get("oeff_rahmen_b"),
+                             oeff_rahmen_tiefe=meta.get("oeff_rahmen_tiefe"),
+                             oeff_rahmen_pos=meta.get("oeff_rahmen_pos"),
+                             oeff_fluegel=meta.get("oeff_fluegel"),
+                             oeff_sims_aus=meta.get("oeff_sims_aus"),
+                             oeff_sims_in=meta.get("oeff_sims_in"),
+                             oeff_glas=meta.get("oeff_glas"),
+                             oeff_referenz=meta.get("oeff_referenz"),
+                             geschoss_end=meta.get("geschoss_end"),
+                             treppe_breite=meta.get("treppe_breite"),
+                             treppe_n=meta.get("treppe_n"),
+                             treppe_referenz=meta.get("treppe_referenz"),
+                             treppe_modus=meta.get("treppe_modus"),
+                             treppe_lauf_d=meta.get("treppe_lauf_d"),
+                             treppe_art=meta.get("treppe_art"),
+                             treppe_h_over=meta.get("treppe_h_over"),
+                             treppe_soll=meta.get("treppe_soll"))
+                new_obj.Attributes = attrs
+                new_obj.CommitChanges()
+        except Exception: pass
+        # Wenn eine Wand-Achse veraendert wurde: alle daran haengenden
+        # Oeffnungs-Points entlang der neuen Achse migrieren (sticky).
+        if meta.get("type") == "wand_axis":
+            try:
+                old_geom = e.OldRhinoObject.Geometry if e.OldRhinoObject else None
+                new_geom = e.NewRhinoObject.Geometry if e.NewRhinoObject else None
+                _migrate_openings_to_new_axis(meta["id"], old_geom, new_geom)
+            except Exception as ex:
+                print("[ELEMENTE] migrate openings:", ex)
+        _queue_regen(meta["id"])
+    except Exception as ex:
+        print("[ELEMENTE] on_object_replaced:", ex)
+
+
+def _migrate_openings_to_new_axis(wall_id, old_geom, new_geom):
+    """Verschiebt alle Oeffnungs-Points einer Wand mit, wenn deren Achse
+    veraendert wird. Mapping ueber relative Bogenlaenge: ein Oeffnungs-
+    Punkt bei 30 % der alten Kurve sitzt nachher bei 30 % der neuen.
+    So bleiben die Oeffnungen 'sticky' an der Wand bei Verschieben,
+    Drehen, Skalieren oder Reshape der Achse."""
+    if not isinstance(old_geom, rg.Curve) or not isinstance(new_geom, rg.Curve):
+        return
+    doc = Rhino.RhinoDoc.ActiveDoc
+    if doc is None: return
+    try:
+        old_len = old_geom.GetLength()
+        new_len = new_geom.GetLength()
+    except Exception: return
+    if old_len < 1e-9 or new_len < 1e-9: return
+
+    _was_busy = sc.sticky.get(_REGEN_BUSY, False)
+    sc.sticky[_REGEN_BUSY] = True
+    try:
+        for op_obj, op_meta in _find_openings_for_wall(doc, wall_id):
+            try:
+                pt_geom = op_obj.Geometry
+                if hasattr(pt_geom, 'Location'):
+                    cur_pos = pt_geom.Location
+                elif isinstance(pt_geom, rg.Point3d):
+                    cur_pos = pt_geom
+                else:
+                    continue
+                ok_old, t_old = old_geom.ClosestPoint(cur_pos)
+                if not ok_old: continue
+                # Bogenlaenge auf alter Kurve bis t_old → relative Position
+                sub = rg.Interval(old_geom.Domain.Min, t_old)
+                try: arc_old = old_geom.GetLength(sub)
+                except Exception:
+                    # Fallback: lineare Parameter-Interpolation
+                    dom_len = old_geom.Domain.Length
+                    arc_old = ((t_old - old_geom.Domain.Min) / dom_len) * old_len
+                relative = arc_old / old_len if old_len > 1e-9 else 0.0
+                if relative < 0: relative = 0
+                if relative > 1: relative = 1
+                arc_new = relative * new_len
+                # Parameter auf neuer Kurve bei dieser Bogenlaenge
+                lp = new_geom.LengthParameter(arc_new)
+                # LengthParameter Rueckgabe ist (bool, double) Tuple in IronPython3
+                t_new = None
+                if isinstance(lp, tuple) and len(lp) >= 2 and lp[0]:
+                    t_new = lp[1]
+                if t_new is None:
+                    # Fallback: lineare Parameter-Interpolation
+                    new_dom = new_geom.Domain
+                    t_new = new_dom.Min + relative * new_dom.Length
+                new_pos = new_geom.PointAt(t_new)
+                doc.Objects.Replace(op_obj.Id, rg.Point(new_pos))
+            except Exception as ex:
+                print("[ELEMENTE] migrate one opening:", ex)
+    finally:
+        sc.sticky[_REGEN_BUSY] = _was_busy
+
+
+def _count_same_id_type(doc, element_id, type_):
+    n = 0
+    for obj in doc.Objects:
+        m = _read_meta(obj)
+        if m and m["id"] == element_id and m["type"] == type_:
+            n += 1
+            if n > 1: return n
+    return n
+
+
+def _on_object_added(sender, e):
+    """Faengt Duplikate ab (Copy/Mirror/Rotate-Copy): Rhino kopiert die
+    UserStrings auf das neue Objekt mit. Source-Duplikate kriegen eine
+    neue UUID, Volume-Duplikate werden geloescht (Regen baut das neue
+    Volumen am richtigen Ort)."""
+    if sc.sticky.get(_REGEN_BUSY): return
+    try:
+        new_obj = e.TheObject
+        meta = _read_meta(new_obj)
+        if meta is None: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        same_count = _count_same_id_type(doc, meta["id"], meta["type"])
+        if same_count <= 1:
+            return  # einziges Objekt mit dieser id, kein Duplikat
+
+        if meta["type"] in SOURCE_TYPES:
+            # Source-Duplikat: neue ID + Volumen regenerieren
+            if meta["type"] == "wand_axis":      prefix = "wall_"
+            elif meta["type"] == "decke_outline": prefix = "decke_"
+            elif meta["type"] == "dach_outline":  prefix = "dach_"
+            elif meta["type"] == "oeffnung_point":
+                prefix = "fenster_" if meta.get("oeff_typ") == "fenster" else "tuer_"
+            elif meta["type"] == "treppe_axis":   prefix = "treppe_"
+            else: prefix = "elem_"
+            new_id = prefix + uuid.uuid4().hex[:10]
+            attrs = new_obj.Attributes
+            _attach_meta(attrs, new_id, meta["type"], meta["geschoss"],
+                         meta["dicke"], meta["uk_override"], meta["ok_override"],
+                         meta.get("referenz", "mid"),
+                         neigung=meta.get("neigung"),
+                         eave_idx=meta.get("eave_idx"),
+                         dach_typ=meta.get("dach_typ"),
+                         neigung_unten=meta.get("neigung_unten"),
+                         knick_h=meta.get("knick_h"),
+                         dach_variante=meta.get("dach_variante"),
+                         oeff_typ=meta.get("oeff_typ") or None,
+                         oeff_parent=meta.get("oeff_parent") or None,
+                         oeff_breite=meta.get("oeff_breite"),
+                         oeff_hoehe=meta.get("oeff_hoehe"),
+                         oeff_brueest=meta.get("oeff_brueest"))
+            new_obj.Attributes = attrs
+            new_obj.CommitChanges()
+            print("[ELEMENTE] Source-Duplikat erkannt — neue ID {}".format(new_id))
+            _queue_regen(new_id)
+        elif meta["type"] in VOLUME_TYPES:
+            # Volume-Duplikat: das mit-kopierte Volumen ist verwaist,
+            # weil das Source-Duplikat eine neue ID bekommt. Loeschen —
+            # die Regen-Pipeline erstellt das richtige Volumen am
+            # korrekten Ort fuer die neue ID.
+            try: doc.Objects.Delete(new_obj.Id, True)
+            except Exception as ex: print("[ELEMENTE] dup-volume delete:", ex)
+    except Exception as ex:
+        print("[ELEMENTE] on_object_added:", ex)
+
+
+def _on_object_deleted(sender, e):
+    """Wenn das Source-Objekt (Achse/Outline/Oeffnungs-Point) manuell
+    geloescht wird → verknuepftes Volumen entfernen. Bei Oeffnung:
+    Elternwand regenerieren damit das Loch verschwindet."""
+    try:
+        obj = e.TheObject
+        meta = _read_meta(obj)
+        if meta and meta.get("type") in SOURCE_TYPES:
+            doc = Rhino.RhinoDoc.ActiveDoc
+            vol = _find_target_volume(doc, meta["id"])
+            if vol is not None:
+                doc.Objects.Delete(vol.Id, True)
+            if meta["type"] == "oeffnung_point":
+                parent_id = meta.get("oeff_parent")
+                if parent_id:
+                    _queue_regen(parent_id)
+            b = sc.sticky.get("elemente_bridge")
+            if b is not None: b._send_state()
+    except Exception as ex:
+        print("[ELEMENTE] on_object_deleted:", ex)
+
+
+_SELECT_BUSY = "_elemente_select_busy"
+# Welche Typen werden gekoppelt? source ↔ volume bidirectional.
+# Aktuell Wand + Decke. Wenn's gut funktioniert auch fuer Dach, Treppe, Oeffnung.
+_PAIRED_VOLUME_TYPES = ("wand_volume", "decke_volume")
+_PAIRED_SOURCE_TYPES = ("wand_axis", "decke_outline")
+
+
+def _collect_partners(doc, rhino_objects):
+    """Sammelt Partner-Objekte fuer Selection-Sync und die Source-Objekte
+    die Grips brauchen. Liefert (partners_list, sources_with_grips_list)."""
+    partners = []
+    sources = []
+    seen_partner_ids = set()
+    seen_source_ids = set()
+    for obj in rhino_objects:
+        meta = _read_meta(obj)
+        if meta is None: continue
+        t = meta.get("type", "")
+        if t in _PAIRED_VOLUME_TYPES:
+            src, _ = _find_source(doc, meta["id"])
+            if src is not None:
+                if str(src.Id) not in seen_partner_ids:
+                    partners.append(src)
+                    seen_partner_ids.add(str(src.Id))
+                if str(src.Id) not in seen_source_ids:
+                    sources.append(src)
+                    seen_source_ids.add(str(src.Id))
+        elif t in _PAIRED_SOURCE_TYPES:
+            vol = _find_target_volume(doc, meta["id"])
+            if vol is not None:
+                if str(vol.Id) not in seen_partner_ids:
+                    partners.append(vol)
+                    seen_partner_ids.add(str(vol.Id))
+            if str(obj.Id) not in seen_source_ids:
+                sources.append(obj)
+                seen_source_ids.add(str(obj.Id))
+    return partners, sources
+
+
+def _on_select_objects(sender, e):
+    """ArchiCAD-Style bidirektionaler Selection-Sync:
+    - Klick auf Volumen (Wand/Decke) → Source-Achse mitselektieren + Grips an
+    - Klick auf Source-Achse → Volumen mitselektieren + Grips an
+
+    So bewegen sich beide synchron bei Move/Gumball, und die Endpunkte
+    der Lauflinie sind als Grips zum Drag verfuegbar."""
+    if sc.sticky.get(_SELECT_BUSY): return
+    if sc.sticky.get(_REGEN_BUSY): return
+    try:
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        partners, sources = _collect_partners(doc, e.RhinoObjects)
+        if not partners and not sources: return
+        sc.sticky[_SELECT_BUSY] = True
+        try:
+            # Partner selektieren — idempotent
+            for p in partners:
+                try:
+                    if p.IsSelected(False) == 0:
+                        doc.Objects.Select(p.Id, True)
+                except Exception as ex:
+                    print("[ELEMENTE] select partner:", ex)
+            # Grips an Source — idempotent
+            for s in sources:
+                try:
+                    if not s.GripsOn:
+                        s.GripsOn = True
+                        s.CommitChanges()
+                except Exception as ex:
+                    print("[ELEMENTE] grips on:", ex)
+        finally:
+            sc.sticky[_SELECT_BUSY] = False
+    except Exception as ex:
+        print("[ELEMENTE] on_select:", ex)
+
+
+def _on_deselect_objects(sender, e):
+    """Bidirektional zu _on_select_objects:
+    - Volume deselektiert → Source deselektieren + Grips aus
+    - Source deselektiert → Volume deselektieren + Grips aus"""
+    if sc.sticky.get(_SELECT_BUSY): return
+    if sc.sticky.get(_REGEN_BUSY): return
+    try:
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        partners, sources = _collect_partners(doc, e.RhinoObjects)
+        if not partners and not sources: return
+        sc.sticky[_SELECT_BUSY] = True
+        try:
+            for p in partners:
+                try:
+                    if p.IsSelected(False) > 0:
+                        doc.Objects.Select(p.Id, False)
+                except Exception as ex:
+                    print("[ELEMENTE] deselect partner:", ex)
+            for s in sources:
+                try:
+                    if s.GripsOn:
+                        s.GripsOn = False
+                        s.CommitChanges()
+                except Exception as ex:
+                    print("[ELEMENTE] grips off:", ex)
+        finally:
+            sc.sticky[_SELECT_BUSY] = False
+    except Exception as ex:
+        print("[ELEMENTE] on_deselect:", ex)
+
+
+def _on_idle_selection(sender, e):
+    """Pollt periodisch die Selektion + verarbeitet Pending-Regenerate-Queue.
+    Queue-Verarbeitung debounct mehrfache Replace-Events waehrend eines
+    Gumball-Drags — pro Idle-Tick wird jede angefragte Wand einmal regeneriert."""
+    b = sc.sticky.get("elemente_bridge")
+    if b is None: return
+    doc = Rhino.RhinoDoc.ActiveDoc
+    if doc is None: return
+
+    # 1) Pending Regenerations abarbeiten (sofort, jeden Idle)
+    pending = _pending_set()
+    if pending:
+        ids = list(pending)
+        pending.clear()
+        sc.sticky[_REGEN_BUSY] = True
+        try:
+            for wid in ids:
+                try: _regenerate_volume(doc, wid)
+                except Exception as ex: print("[ELEMENTE] regen", wid, ex)
+            try: doc.Views.Redraw()
+            except Exception: pass
+        finally:
+            sc.sticky[_REGEN_BUSY] = False
+        # Bridge updaten — Volumen-Properties (UK/OK) koennten sich
+        # geaendert haben durch die Edit-Aktion
+        try: b._send_state()
+        except Exception: pass
+
+    # 2) Selektions-Poll (langsamer, ~5/s)
+    try:
+        b._idle_count = getattr(b, "_idle_count", 0) + 1
+        if b._idle_count < 10: return
+        b._idle_count = 0
+        ids = tuple(sorted(str(o.Id) for o in doc.Objects.GetSelectedObjects(False, False)))
+        if ids != getattr(b, "_last_selection_ids", ()):
+            b._last_selection_ids = ids
+            b._send_state()
+    except Exception:
+        pass
+
+
+def _install_listeners(bridge):
+    flag = "elemente_listeners"
+    sc.sticky["elemente_bridge"] = bridge
+    if sc.sticky.get(flag):
+        return
+    Rhino.RhinoDoc.ReplaceRhinoObject += _on_object_replaced
+    Rhino.RhinoDoc.AddRhinoObject     += _on_object_added
+    Rhino.RhinoDoc.DeleteRhinoObject  += _on_object_deleted
+    Rhino.RhinoDoc.SelectObjects      += _on_select_objects
+    Rhino.RhinoDoc.DeselectObjects    += _on_deselect_objects
+    Rhino.RhinoApp.Idle               += _on_idle_selection
+    sc.sticky[flag] = True
+    print("[ELEMENTE] Listener aktiv (Replace + Add + Delete + Select + Idle)")
+
+
+def _bridge_factory():
+    b = ElementeBridge()
+    _install_listeners(b)
+    return b
+
+
+panel_base.register_and_open("elemente", "ELEMENTE", PANEL_GUID_STR,
+                             _bridge_factory, icon_spec=("E", "#5fa896"))
diff --git a/rhino/gestaltung.py b/rhino/gestaltung.py
new file mode 100644
index 0000000..341d222
--- /dev/null
+++ b/rhino/gestaltung.py
@@ -0,0 +1,1635 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+gestaltung.py
+GESTALTUNG-Panel: Attribute der Selektion (Farbe, Stiftdicke, Linientyp,
+Hatch-Fuellung).
+"""
+import os
+import sys
+import math
+import json
+import time
+import Rhino
+import Rhino.Geometry as rg
+import scriptcontext as sc
+import System
+import System.Drawing as Drawing
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "4b8d3f2e-5c9d-4e0f-b2c3-d4e5f6071829"
+
+_FROM_LAYER     = Rhino.DocObjects.ObjectColorSource.ColorFromLayer
+_FROM_OBJECT    = Rhino.DocObjects.ObjectColorSource.ColorFromObject
+_LW_FROM_LAYER  = Rhino.DocObjects.ObjectPlotWeightSource.PlotWeightFromLayer
+_LW_FROM_OBJECT = Rhino.DocObjects.ObjectPlotWeightSource.PlotWeightFromObject
+_LT_FROM_LAYER  = Rhino.DocObjects.ObjectLinetypeSource.LinetypeFromLayer
+_LT_FROM_OBJECT = Rhino.DocObjects.ObjectLinetypeSource.LinetypeFromObject
+# Print-Pendants: ohne die plottet eine Hatch mit eigener Display-Farbe in
+# Layerfarbe (= gleiche Farbe wie der Stift). Mit PlotColorFromObject +
+# PlotColor folgt der Druck der gewuenschten Hatch-Farbe.
+_PLOT_FROM_LAYER  = Rhino.DocObjects.ObjectPlotColorSource.PlotColorFromLayer
+_PLOT_FROM_OBJECT = Rhino.DocObjects.ObjectPlotColorSource.PlotColorFromObject
+
+
+def _sync_plot_color_to_display(attrs):
+    """Spiegelt ColorSource/ObjectColor in PlotColorSource/PlotColor.
+    Wird ueberall aufgerufen wo wir eine Hatch-Farbe setzen, damit Print = Display."""
+    try:
+        cs = int(attrs.ColorSource)
+        if cs == int(_FROM_OBJECT):
+            attrs.PlotColorSource = _PLOT_FROM_OBJECT
+            attrs.PlotColor       = attrs.ObjectColor
+        else:
+            attrs.PlotColorSource = _PLOT_FROM_LAYER
+    except Exception as ex:
+        print("[GESTALTUNG] sync plot-color:", ex)
+
+_FILL_KEY        = "ebenen_fill_hatch_id"
+_FILL_SOURCE_KEY = "ebenen_fill_source"  # "layer" oder "object"
+_FILL_OWNER_KEY  = "ebenen_fill_owner"   # Curve-ID, auf Hatch gesetzt
+_NO_FILL_KEY     = "ebenen_no_fill"      # "1" wenn User Fuellung explizit aus hat
+
+# Loop-Guard fuer Live-Update
+_processing = set()
+
+# Sticky-Mapping curve_id_str -> hatch_id_str. Wird beim Anlegen jeder Hatch
+# gefuellt und beim on_delete als Fallback gelesen, falls Rhino die UserStrings
+# der geloeschten Curve schon weggewischt hat.
+def _link_curve_hatch(curve_id, hatch_id):
+    m = sc.sticky.get("gestaltung_curve_hatch")
+    if not isinstance(m, dict):
+        m = {}
+        sc.sticky["gestaltung_curve_hatch"] = m
+    m[str(curve_id)] = str(hatch_id)
+
+def _lookup_hatch_for_curve(curve_id):
+    m = sc.sticky.get("gestaltung_curve_hatch")
+    if isinstance(m, dict):
+        return m.get(str(curve_id))
+    return None
+
+def _unlink_curve(curve_id):
+    m = sc.sticky.get("gestaltung_curve_hatch")
+    if isinstance(m, dict):
+        m.pop(str(curve_id), None)
+
+
+# Rhino feuert bei Drag/Move oft on_delete + on_add (statt on_replace).
+# Wir merken uns kurz die Hatch-Metadaten bei jedem cascade-delete, damit
+# wir die Hatch beim sofortigen Re-Add wiederherstellen koennen.
+_PENDING_HATCH_TTL = 3.0   # Sekunden — danach gilt's als echter Delete
+
+def _save_pending_hatch(curve_id, hatch_obj):
+    try:
+        hg = hatch_obj.Geometry
+        ha = hatch_obj.Attributes
+        meta = {
+            "pattern_idx":  int(hg.PatternIndex),
+            "scale":        float(hg.PatternScale),
+            "rotation":     float(hg.PatternRotation),
+            "color_source": int(ha.ColorSource),
+            "color_argb":   int(ha.ObjectColor.ToArgb()),
+            "fill_source":  ha.GetUserString(_FILL_SOURCE_KEY) or "object",
+            "timestamp":    time.time(),
+        }
+    except Exception as ex:
+        print("[GESTALTUNG] save pending-hatch err:", ex)
+        return
+    m = sc.sticky.get("gestaltung_pending_hatch")
+    if not isinstance(m, dict):
+        m = {}
+        sc.sticky["gestaltung_pending_hatch"] = m
+    m[str(curve_id)] = meta
+
+def _take_pending_hatch(curve_id):
+    m = sc.sticky.get("gestaltung_pending_hatch")
+    if not isinstance(m, dict): return None
+    now = time.time()
+    expired = [k for k, v in list(m.items())
+               if now - v.get("timestamp", 0) > _PENDING_HATCH_TTL]
+    for k in expired: m.pop(k, None)
+    return m.pop(str(curve_id), None)
+
+
+def _restore_hatch_from_pending(doc, obj, meta):
+    """Erzeugt eine Hatch mit den gespeicherten Metadaten (Drag-Recovery)."""
+    try:
+        geom = obj.Geometry
+    except Exception:
+        return False
+    if not _is_closed_planar_curve(geom): return False
+    try:
+        new_hatches = rg.Hatch.Create(geom,
+            meta["pattern_idx"], meta["rotation"], meta["scale"], 0.0)
+    except Exception as ex:
+        print("[GESTALTUNG] restore Hatch.Create:", ex)
+        return False
+    if not new_hatches or len(new_hatches) == 0: return False
+    new_attrs = Rhino.DocObjects.ObjectAttributes()
+    new_attrs.LayerIndex = obj.Attributes.LayerIndex
+    try:
+        new_attrs.ColorSource = Rhino.DocObjects.ObjectColorSource(meta["color_source"])
+    except Exception:
+        try: new_attrs.ColorSource = _FROM_LAYER
+        except Exception: pass
+    try:
+        new_attrs.ObjectColor = Drawing.Color.FromArgb(meta["color_argb"])
+    except Exception:
+        pass
+    new_attrs.SetUserString(_FILL_OWNER_KEY, str(obj.Id))
+    new_attrs.SetUserString(_FILL_SOURCE_KEY, meta.get("fill_source", "object"))
+    _sync_plot_color_to_display(new_attrs)
+    try:
+        hatch_id = doc.Objects.AddHatch(new_hatches[0], new_attrs)
+    except Exception as ex:
+        print("[GESTALTUNG] restore AddHatch:", ex)
+        return False
+    if hatch_id == System.Guid.Empty: return False
+    try:
+        ca = obj.Attributes.Duplicate()
+        ca.SetUserString(_FILL_KEY, str(hatch_id))
+        _processing.add(obj.Id)
+        try: doc.Objects.ModifyAttributes(obj, ca, True)
+        finally: _processing.discard(obj.Id)
+    except Exception:
+        pass
+    _link_curve_hatch(obj.Id, hatch_id)
+    return True
+
+
+def _color_to_hex(c):
+    """System.Drawing.Color -> '#rrggbb'. Defensive: IronPython c.R liefert
+    System.Byte das nicht immer sauber in :02x format einrastet -> int()-Cast."""
+    if c is None:
+        return None
+    try:
+        return "#{:02x}{:02x}{:02x}".format(int(c.R), int(c.G), int(c.B))
+    except Exception as ex:
+        print("[GESTALTUNG] color-hex Fehler:", ex)
+        return None
+
+
+def _hex_to_color(h):
+    if not isinstance(h, str): h = "888888"
+    h = h.strip()
+    if h.startswith("#"):  h = h[1:]
+    if h.startswith(("0x", "0X")): h = h[2:]
+    if len(h) == 3:  # shorthand #rgb -> #rrggbb
+        h = h[0] * 2 + h[1] * 2 + h[2] * 2
+    if len(h) != 6 or any(c not in "0123456789abcdefABCDEF" for c in h):
+        h = "888888"
+    return Drawing.Color.FromArgb(int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16))
+
+
+def _force_load_linetypes(doc):
+    """Rhinos Linetype-Tabelle wird lazy initialisiert — wir triggern es."""
+    # 1) Eingebaute Methode (falls vorhanden)
+    for method_name in ("LoadDefaultLinetypes", "LoadDefaults", "LoadStandardLinetypes"):
+        try:
+            getattr(doc.Linetypes, method_name)()
+            return True
+        except AttributeError:
+            continue
+        except Exception:
+            continue
+    # 2) Standardnamen suchen triggert internes Laden in einigen Versionen
+    for name in ("Hidden", "Dashed", "DashDot", "Dots",
+                 "Border", "Center", "Phantom",
+                 "Hidden2", "Dashed2", "DashDot2"):
+        try:
+            doc.Linetypes.Find(name, True)
+        except Exception:
+            pass
+    return False
+
+
+def _all_linetypes(doc):
+    """Liefert alle nicht-geloeschten Linetypes mit Namen. Continuous immer enthalten."""
+    _force_load_linetypes(doc)
+    out = []
+    seen = set()
+    n = 0
+    try:
+        n = doc.Linetypes.Count
+    except Exception:
+        pass
+    for i in range(n):
+        try:
+            lt = doc.Linetypes[i]
+        except Exception:
+            continue
+        if lt is None:
+            continue
+        try:
+            if lt.IsDeleted:
+                continue
+        except Exception:
+            pass
+        try:
+            name = lt.Name
+        except Exception:
+            name = None
+        if not name or name in seen:
+            continue
+        seen.add(name)
+        out.append(name)
+    # Continuous immer als erstes — Rhinos Default-Linetype, das oft als
+    # virtueller Eintrag oder unter anderem Namen verbucht ist.
+    if "Continuous" not in seen:
+        out.insert(0, "Continuous")
+    return out
+
+
+def _all_hatch_patterns(doc):
+    out = []
+    for i in range(doc.HatchPatterns.Count):
+        hp = doc.HatchPatterns[i]
+        if hp.IsDeleted: continue
+        if hp.Name: out.append(hp.Name)
+    if not out:
+        out.append("Solid")
+    return out
+
+
+def _pattern_name(doc, idx):
+    if idx is None or idx < 0 or idx >= doc.HatchPatterns.Count:
+        return None
+    hp = doc.HatchPatterns[idx]
+    if hp.IsDeleted: return None
+    return hp.Name
+
+
+def _linetype_name(doc, idx):
+    if idx is None or idx < 0 or idx >= doc.Linetypes.Count:
+        return None
+    lt = doc.Linetypes[idx]
+    if lt.IsDeleted:
+        return None
+    return lt.Name
+
+
+def _is_closed_planar_curve(geom):
+    return isinstance(geom, rg.Curve) and geom.IsClosed and geom.IsPlanar()
+
+
+def _ebene_fill_for_layer(doc, layer):
+    """Sucht in dossier_ebenen (doc.Strings) die zur Ebene gehoerige fill-Definition.
+    Match per dossier_code UserString auf dem Sublayer.
+    Returns dict {pattern, source, color, scale, rotation} oder None.
+    """
+    if layer is None: return None
+    try:
+        code = layer.GetUserString("dossier_code")
+    except Exception:
+        code = None
+    if not code:
+        print("[GESTALTUNG] _ebene_fill_for_layer: kein dossier_code auf Layer idx={}".format(
+            getattr(layer, "LayerIndex", "?")))
+        return None
+    raw = doc.Strings.GetValue("dossier_ebenen")
+    if not raw:
+        print("[GESTALTUNG] _ebene_fill_for_layer: dossier_ebenen leer in doc.Strings")
+        return None
+    try:
+        ebenen = json.loads(raw)
+    except Exception as ex:
+        print("[GESTALTUNG] _ebene_fill_for_layer: json-Fehler:", ex)
+        return None
+    if not isinstance(ebenen, list): return None
+    for e in ebenen:
+        if not isinstance(e, dict): continue
+        if e.get("code") != code: continue
+        f = e.get("fill")
+        if not isinstance(f, dict):
+            print("[GESTALTUNG] _ebene_fill_for_layer: Ebene code={} hat KEIN fill-Feld".format(code))
+            return None
+        # lw: Strichstaerke der Hatch-Linien in mm. None = "wie Stift der Ebene"
+        # (ColorSource/PlotWeightSource bleibt auf FromLayer).
+        lw_raw = f.get("lw")
+        lw_val = None
+        if lw_raw is not None:
+            try:
+                v = float(lw_raw)
+                if v >= 0: lw_val = v
+            except Exception:
+                pass
+        result = {
+            "pattern":  f.get("pattern", "None"),
+            "source":   f.get("source", "layer"),
+            "color":    f.get("color"),
+            "scale":    float(f.get("scale", 1.0)) if f.get("scale") is not None else 1.0,
+            "rotation": float(f.get("rotation", 0)) if f.get("rotation") is not None else 0.0,
+            "lw":       lw_val,
+        }
+        print("[GESTALTUNG] _ebene_fill_for_layer code={} -> {}".format(code, result))
+        return result
+    print("[GESTALTUNG] _ebene_fill_for_layer: code={} nicht in dossier_ebenen gefunden".format(code))
+    return None
+
+
+def _apply_ebene_fill(doc, obj):
+    """Wenn obj geschlossene Kurve auf einer Ebene mit fill-Settings ist,
+    erzeugt automatisch eine Hatch entsprechend der Ebenen-Definition."""
+    if obj is None: return False
+    try:
+        attrs = obj.Attributes
+    except Exception:
+        return False
+    # schon gefuellt oder explizit als "keine Fuellung" markiert?
+    try:
+        if attrs.GetUserString(_FILL_KEY): return False
+        if attrs.GetUserString(_NO_FILL_KEY) == "1": return False
+    except Exception:
+        pass
+    try:
+        geom = obj.Geometry
+    except Exception:
+        return False
+    if not _is_closed_planar_curve(geom): return False
+
+    try:
+        layer_idx = int(attrs.LayerIndex)
+    except Exception:
+        return False
+    if layer_idx < 0 or layer_idx >= doc.Layers.Count: return False
+    layer = doc.Layers[layer_idx]
+
+    fill = _ebene_fill_for_layer(doc, layer)
+    if fill is None: return False
+    if fill["pattern"] == "None": return False
+
+    pattern_idx = doc.HatchPatterns.Find(fill["pattern"], True)
+    if pattern_idx < 0:
+        pattern_idx = doc.HatchPatterns.Find("Solid", True)
+    if pattern_idx < 0:
+        pattern_idx = doc.HatchPatterns.CurrentHatchPatternIndex
+
+    scale_v = float(fill["scale"]) or 1.0
+    rot_rad = math.radians(float(fill["rotation"]))
+
+    # Massstabs-Multiplikator: layer-Skala ist in "Paper-Units" definiert
+    # (= so wie sie auf dem Druck aussehen soll). Bei eingestelltem 1:N wird
+    # entsprechend hochskaliert damit die Hatch auf Paper richtig wirkt.
+    try:
+        import massstab
+        m = massstab.get_current_massstab_factor(doc)
+        if m and m > 0:
+            scale_v = scale_v * m
+    except Exception:
+        pass
+
+    try:
+        hatches = rg.Hatch.Create(geom, pattern_idx, rot_rad, scale_v, 0.0)
+    except Exception as ex:
+        print("[GESTALTUNG] Auto-Fill Hatch.Create:", ex)
+        return False
+    if not hatches or len(hatches) == 0: return False
+
+    from_layer = (fill["source"] == "layer")
+    new_attrs = Rhino.DocObjects.ObjectAttributes()
+    new_attrs.LayerIndex = layer_idx
+    if from_layer:
+        new_attrs.ColorSource = _FROM_LAYER
+    else:
+        new_attrs.ColorSource = _FROM_OBJECT
+        new_attrs.ObjectColor = _hex_to_color(fill.get("color") or "#888888")
+    # Hatch-Strichstaerke: wenn lw definiert -> PlotWeight von Object (Print-aware via massstab)
+    lw_val = fill.get("lw")
+    if lw_val is not None:
+        try:
+            import massstab as _ms_lw
+            _ms_lw.write_plotweight(doc, new_attrs, float(lw_val))
+            new_attrs.PlotWeightSource = _LW_FROM_OBJECT
+        except Exception as _ex:
+            new_attrs.PlotWeightSource = _LW_FROM_OBJECT
+            new_attrs.PlotWeight = float(lw_val)
+    new_attrs.SetUserString(_FILL_OWNER_KEY, str(obj.Id))
+    new_attrs.SetUserString(_FILL_SOURCE_KEY, "layer")  # gekoppelt an Ebene
+    _sync_plot_color_to_display(new_attrs)
+
+    try:
+        hatch_id = doc.Objects.AddHatch(hatches[0], new_attrs)
+    except Exception as ex:
+        print("[GESTALTUNG] Auto-Fill AddHatch:", ex)
+        return False
+    if hatch_id == System.Guid.Empty: return False
+
+    # Wenn Print-Mode aktiv ist, neue Hatch sofort mit Massstab skalieren
+    try:
+        import massstab
+        h_obj = doc.Objects.FindId(hatch_id)
+        if h_obj is not None:
+            massstab.post_create_hatch_scale(doc, h_obj, float(fill["scale"]) or 1.0)
+    except Exception as ex:
+        print("[GESTALTUNG] post_create_hatch_scale (auto-fill):", ex)
+
+    try:
+        ca = obj.Attributes.Duplicate()
+        ca.SetUserString(_FILL_KEY, str(hatch_id))
+        _processing.add(obj.Id)
+        try: doc.Objects.ModifyAttributes(obj, ca, True)
+        finally: _processing.discard(obj.Id)
+    except Exception as ex:
+        print("[GESTALTUNG] Auto-Fill UserString:", ex)
+
+    _link_curve_hatch(obj.Id, hatch_id)
+    return True
+
+
+def refresh_layer_fills(doc):
+    """Gleicht Hatches an die aktuellen fill-Settings ihrer zugehoerigen Ebene
+    an — fuer Hatches die ueber 'Nach Ebene' angelegt wurden (Marker
+    FILL_SOURCE_KEY=='layer'). Wird beim Apply der Ebenen-Einstellungen
+    aufgerufen, nicht bei Selection-Events.
+
+    Drei Stufen:
+      1) Pattern/Skala/Rotation der bestehenden Hatches anpassen.
+      2) Farbe / ColorSource an fill.source + fill.color anpassen — Hatches
+         mit source=='layer' folgen der Ebenen-Definition. User-Overrides
+         (source=='object' am Hatch) bleiben unangetastet.
+      3) Auto-Fill nachziehen: geschlossene Kurven auf Ebenen mit aktivem
+         Pattern, die noch keine Hatch UND keinen NO_FILL-Marker haben,
+         bekommen jetzt eine Hatch (so wirken nachtraeglich definierte
+         Fuellungen auch auf alte Zeichnungen).
+
+      * Pattern 'None' in der Ebene loescht KEINE Hatches — der User entfernt
+        Fuellungen explizit ueber die Gestaltung-Panel.
+    """
+    raw = doc.Strings.GetValue("dossier_ebenen")
+    if not raw:
+        return 0
+    try:
+        ebenen = json.loads(raw)
+    except Exception:
+        return 0
+    if not isinstance(ebenen, list):
+        return 0
+
+    # Code -> fill-dict fuer schnellen Lookup
+    fill_by_code = {}
+    for e in ebenen:
+        if not isinstance(e, dict): continue
+        f = e.get("fill")
+        if isinstance(f, dict) and f.get("pattern") not in (None, "None"):
+            fill_by_code[e.get("code")] = {
+                "pattern":  f.get("pattern"),
+                "source":   f.get("source", "layer"),
+                "color":    f.get("color"),
+                "scale":    float(f.get("scale", 1.0)) if f.get("scale") is not None else 1.0,
+                "rotation": float(f.get("rotation", 0.0)) if f.get("rotation") is not None else 0.0,
+            }
+    if not fill_by_code:
+        return 0
+
+    # --- 1+2) Bestehende Layer-Hatches einsammeln ---
+    targets = []
+    owner_ids = set()
+    try:
+        for obj in doc.Objects:
+            if obj is None: continue
+            try:
+                if obj.IsDeleted: continue
+            except Exception:
+                continue
+            try:
+                attrs = obj.Attributes
+                if attrs.GetUserString(_FILL_SOURCE_KEY) != "layer": continue
+                owner_id_str = attrs.GetUserString(_FILL_OWNER_KEY)
+            except Exception:
+                continue
+            if not owner_id_str: continue
+            try:
+                owner_id = System.Guid(owner_id_str)
+            except Exception:
+                continue
+            owner = doc.Objects.FindId(owner_id)
+            if owner is None or owner.IsDeleted: continue
+            targets.append((obj, owner))
+            owner_ids.add(str(owner.Id))
+    except Exception as ex:
+        print("[GESTALTUNG] refresh_layer_fills scan:", ex)
+        return 0
+
+    updated = 0
+    color_updated = 0
+    skipped = 0
+
+    for hatch_obj, owner in targets:
+        try:
+            layer_idx = owner.Attributes.LayerIndex
+        except Exception:
+            continue
+        layer = doc.Layers[layer_idx] if 0 <= layer_idx < doc.Layers.Count else None
+        try:
+            code = layer.GetUserString("dossier_code") if layer is not None else None
+        except Exception:
+            code = None
+        fill = fill_by_code.get(code) if code else None
+        if fill is None:
+            skipped += 1
+            continue
+
+        pattern_idx = doc.HatchPatterns.Find(fill["pattern"], True)
+        if pattern_idx < 0:
+            pattern_idx = doc.HatchPatterns.Find("Solid", True)
+        if pattern_idx < 0:
+            pattern_idx = doc.HatchPatterns.CurrentHatchPatternIndex
+        scale_v = float(fill["scale"]) or 1.0
+        rot_rad = math.radians(float(fill["rotation"]))
+        # Massstab beachten (siehe _apply_ebene_fill)
+        try:
+            import massstab
+            m = massstab.get_current_massstab_factor(doc)
+            if m and m > 0:
+                scale_v = scale_v * m
+        except Exception:
+            pass
+
+        # (1) Geometrie-Refresh wenn Pattern/Skala/Drehung sich geaendert haben
+        try:
+            hg = hatch_obj.Geometry
+            cur_p = hg.PatternIndex
+            cur_s = hg.PatternScale
+            cur_r = hg.PatternRotation
+        except Exception:
+            cur_p, cur_s, cur_r = -1, -1.0, -1.0
+
+        needs_rebuild = not (cur_p == pattern_idx
+                             and abs(cur_s - scale_v) <= 1e-6
+                             and abs(cur_r - rot_rad) <= 1e-6)
+        if needs_rebuild:
+            try:
+                geom = owner.Geometry
+                if _is_closed_planar_curve(geom):
+                    new_h = rg.Hatch.Create(geom, pattern_idx, rot_rad, scale_v, 0.0)
+                    if new_h and len(new_h) > 0:
+                        _processing.add(hatch_obj.Id)
+                        try:
+                            doc.Objects.Replace(hatch_obj.Id, new_h[0])
+                        finally:
+                            _processing.discard(hatch_obj.Id)
+                        updated += 1
+                        # Print-Mode-aware Skalierung + Original-Update
+                        try:
+                            import massstab as _ms
+                            h_obj = doc.Objects.FindId(hatch_obj.Id)
+                            if h_obj is not None:
+                                _ms.post_create_hatch_scale(doc, h_obj, scale_v)
+                        except Exception as _ex:
+                            print("[GESTALTUNG] post_create_hatch_scale (refresh):", _ex)
+            except Exception as ex:
+                print("[GESTALTUNG] refresh rebuild:", ex)
+
+        # (2) Farb-Sync — Hatch mit source=='layer' folgt der Ebenen-Definition
+        try:
+            refreshed = doc.Objects.FindId(hatch_obj.Id) or hatch_obj
+            ha = refreshed.Attributes
+            want_from_layer = (fill["source"] == "layer")
+            want_color = _hex_to_color(fill.get("color") or "#888888")
+            cur_cs = int(ha.ColorSource)
+            need_change = False
+            if want_from_layer:
+                if cur_cs != int(_FROM_LAYER):
+                    need_change = True
+            else:
+                if cur_cs != int(_FROM_OBJECT):
+                    need_change = True
+                else:
+                    try:
+                        if int(ha.ObjectColor.ToArgb()) != int(want_color.ToArgb()):
+                            need_change = True
+                    except Exception:
+                        need_change = True
+            if need_change:
+                na = ha.Duplicate()
+                if want_from_layer:
+                    na.ColorSource = _FROM_LAYER
+                else:
+                    na.ColorSource = _FROM_OBJECT
+                    na.ObjectColor = want_color
+                _sync_plot_color_to_display(na)
+                _processing.add(refreshed.Id)
+                try:
+                    doc.Objects.ModifyAttributes(refreshed, na, True)
+                finally:
+                    _processing.discard(refreshed.Id)
+                color_updated += 1
+        except Exception as ex:
+            print("[GESTALTUNG] refresh color-sync:", ex)
+
+        # (3) Hatch-PlotWeight an fill.lw anpassen (None = wieder ByLayer)
+        try:
+            want_lw = fill.get("lw")
+            refreshed = doc.Objects.FindId(hatch_obj.Id) or hatch_obj
+            ha = refreshed.Attributes
+            cur_src = int(ha.PlotWeightSource)
+            need_lw_change = False
+            if want_lw is None:
+                # Auf ByLayer zuruecksetzen
+                if cur_src != int(_LW_FROM_LAYER):
+                    need_lw_change = True
+            else:
+                if cur_src != int(_LW_FROM_OBJECT):
+                    need_lw_change = True
+                else:
+                    try:
+                        import massstab as _ms_lw_chk
+                        cur_real = _ms_lw_chk.read_plotweight(ha)
+                        if abs(float(cur_real) - float(want_lw)) > 1e-6:
+                            need_lw_change = True
+                    except Exception:
+                        if abs(float(ha.PlotWeight or 0) - float(want_lw)) > 1e-6:
+                            need_lw_change = True
+            if need_lw_change:
+                na = ha.Duplicate()
+                if want_lw is None:
+                    na.PlotWeightSource = _LW_FROM_LAYER
+                else:
+                    na.PlotWeightSource = _LW_FROM_OBJECT
+                    try:
+                        import massstab as _ms_lw_w
+                        _ms_lw_w.write_plotweight(doc, na, float(want_lw))
+                    except Exception:
+                        na.PlotWeight = float(want_lw)
+                _processing.add(refreshed.Id)
+                try:
+                    doc.Objects.ModifyAttributes(refreshed, na, True)
+                finally:
+                    _processing.discard(refreshed.Id)
+        except Exception as ex:
+            print("[GESTALTUNG] refresh lw-sync:", ex)
+
+    # --- 3) Auto-Fill nachziehen fuer Kurven ohne Hatch ---
+    added = 0
+    # Code -> Sublayer-Indizes (alle Zeichnungsebenen)
+    try:
+        layers_by_code = {}
+        for i in range(doc.Layers.Count):
+            layer = doc.Layers[i]
+            if layer is None or layer.IsDeleted: continue
+            try:
+                c = layer.GetUserString("dossier_code")
+            except Exception:
+                c = None
+            if c and c in fill_by_code:
+                layers_by_code.setdefault(c, []).append(i)
+
+        for code, idxs in layers_by_code.items():
+            for layer_idx in idxs:
+                layer = doc.Layers[layer_idx]
+                try:
+                    curves = list(doc.Objects.FindByLayer(layer))
+                except Exception:
+                    continue
+                for obj in curves:
+                    if obj is None: continue
+                    try:
+                        if obj.IsDeleted: continue
+                    except Exception:
+                        continue
+                    # Hatches selbst ueberspringen (FindByLayer liefert auch sie)
+                    if str(obj.Id) in owner_ids:
+                        continue
+                    try:
+                        ga = obj.Attributes
+                        if ga.GetUserString(_FILL_KEY): continue
+                        if ga.GetUserString(_FILL_OWNER_KEY): continue  # ist selbst eine Hatch
+                        if ga.GetUserString(_NO_FILL_KEY) == "1": continue
+                    except Exception:
+                        continue
+                    try:
+                        if not _is_closed_planar_curve(obj.Geometry): continue
+                    except Exception:
+                        continue
+                    try:
+                        if _apply_ebene_fill(doc, obj):
+                            added += 1
+                    except Exception as ex:
+                        print("[GESTALTUNG] refresh auto-fill:", ex)
+    except Exception as ex:
+        print("[GESTALTUNG] refresh auto-fill scan:", ex)
+
+    if updated or color_updated or added:
+        doc.Views.Redraw()
+    print("[GESTALTUNG] refresh_layer_fills: pattern={}, farbe={}, neu={}, unveraendert={}".format(
+        updated, color_updated, added, skipped))
+    return updated + color_updated + added
+
+
+def repair_plot_colors(doc):
+    """Synct PlotColor/PlotColorSource an Color/ColorSource fuer alle Objekte
+    mit benutzerdefinierter Farbe (ColorSource == FromObject).
+
+    Hintergrund: Rhino fuehrt fuer Anzeige und Druck zwei getrennte Farb-
+    Quellen — ColorSource (Display) und PlotColorSource (Plot). Default fuer
+    Plot ist 'PlotColorFromLayer'. Setzt der User die Display-Farbe ueber,
+    bleibt der Plot trotzdem auf Layerfarbe haengen -> Anzeige und Druck
+    weichen ab. Diese Funktion gleicht beides ab.
+
+    Scope: nur Objekte wo ColorSource == FromObject (User hat explizit
+    ueberschrieben). Objekte mit FromLayer werden nicht angefasst — deren
+    PlotColorFromLayer Default ist bereits konsistent.
+
+    No-op falls schon synchron. Laeuft beim Panel-Start und nach Apply.
+    """
+    fixed = 0
+    scanned = 0
+    try:
+        for obj in doc.Objects:
+            if obj is None: continue
+            try:
+                if obj.IsDeleted: continue
+                attrs = obj.Attributes
+                cs = int(attrs.ColorSource)
+            except Exception:
+                continue
+            if cs != int(_FROM_OBJECT):
+                continue  # FromLayer -> Default ist bereits ok
+            scanned += 1
+            try:
+                pcs   = int(attrs.PlotColorSource)
+                need_pcs  = (pcs != int(_PLOT_FROM_OBJECT))
+                need_pcol = False
+                try:
+                    need_pcol = (int(attrs.PlotColor.ToArgb()) != int(attrs.ObjectColor.ToArgb()))
+                except Exception:
+                    need_pcol = True
+                if not (need_pcs or need_pcol):
+                    continue
+                ha = attrs.Duplicate()
+                _sync_plot_color_to_display(ha)
+                _processing.add(obj.Id)
+                try:
+                    doc.Objects.ModifyAttributes(obj, ha, True)
+                finally:
+                    _processing.discard(obj.Id)
+                fixed += 1
+            except Exception as ex:
+                print("[GESTALTUNG] repair_plot_colors entry:", ex)
+    except Exception as ex:
+        print("[GESTALTUNG] repair_plot_colors scan:", ex)
+        return 0
+    if fixed:
+        doc.Views.Redraw()
+        print("[GESTALTUNG] repair_plot_colors: {} Objekte repariert (von {} mit Eigenfarbe gescannt)".format(fixed, scanned))
+    return fixed
+
+
+def _safe_layer_label(doc, layer, idx):
+    """Baut ein ASCII-only Layer-Label aus den dossier_id/dossier_code UserStrings,
+    um layer.FullPath/Name (kann mit Umlauten auf Mac eine UnicodeDecodeError werfen)
+    zu vermeiden. Fallback: layer.Name in try/except, sonst Index."""
+    try:
+        code = layer.GetUserString("dossier_code")
+    except Exception:
+        code = None
+    if code:
+        parent_id_str = None
+        try:
+            parent_id_str = str(layer.ParentLayerId)
+        except Exception:
+            pass
+        z_id = None
+        if parent_id_str and parent_id_str != "00000000-0000-0000-0000-000000000000":
+            try:
+                for pl in doc.Layers:
+                    try:
+                        if pl.IsDeleted: continue
+                        if str(pl.Id) == parent_id_str:
+                            z_id = pl.GetUserString("dossier_id") or None
+                            break
+                    except Exception:
+                        continue
+            except Exception:
+                pass
+        return "{}/{}".format(z_id or "?", code)
+    # Kein DOSSIER-Layer — try Name, dann Index
+    try:
+        return layer.Name
+    except Exception:
+        return "Layer {}".format(idx)
+
+
+def _selection_summary(doc):
+    objs = list(doc.Objects.GetSelectedObjects(False, False))
+    base = {"count": 0, "linetypes": _all_linetypes(doc), "hatchPatterns": _all_hatch_patterns(doc)}
+    if not objs:
+        return base
+
+    color_sources, colors = set(), set()
+    lw_sources,    lws    = set(), set()
+    lt_sources,    lts    = set(), set()
+    lt_scales             = set()
+    layer_colors,  layer_lws, layer_lts, layer_names = set(), set(), set(), set()
+
+    fill_enabled  = set()
+    fill_colors   = set()
+    fill_sources  = set()
+    fill_patterns = set()
+    fill_scales   = set()
+    fill_rots     = set()
+    has_closed_curves = False
+
+    for obj in objs:
+        a = obj.Attributes
+        color_sources.add(int(a.ColorSource))
+        oc = _color_to_hex(a.ObjectColor)
+        if oc: colors.add(oc)
+        lw_sources.add(int(a.PlotWeightSource))
+        # Print-Mode-aware: zeige im Panel den "echten" PlotWeight, nicht den
+        # mit dem Massstab-Faktor multiplizierten Display-Wert.
+        try:
+            import massstab as _ms
+            lws.add(round(_ms.read_plotweight(a), 4))
+        except Exception:
+            lws.add(round(a.PlotWeight, 4))
+        lt_sources.add(int(a.LinetypeSource))
+        ltn = _linetype_name(doc, a.LinetypeIndex)
+        if ltn: lts.add(ltn)
+        for prop in ("LinetypePatternLengthScale", "LinetypeScale"):
+            if hasattr(a, prop):
+                try:
+                    lt_scales.add(round(float(getattr(a, prop)), 4))
+                    break
+                except Exception:
+                    pass
+        if a.LayerIndex >= 0 and a.LayerIndex < doc.Layers.Count:
+            layer = doc.Layers[a.LayerIndex]
+            lc = _color_to_hex(layer.Color)
+            if lc: layer_colors.add(lc)
+            try:
+                import massstab as _ms2
+                layer_lws.add(round(_ms2.read_plotweight(layer), 4))
+            except Exception:
+                layer_lws.add(round(layer.PlotWeight, 4))
+            ll = _linetype_name(doc, layer.LinetypeIndex)
+            if ll: layer_lts.add(ll)
+            # WICHTIG: layer.FullPath/Name liefert auf Mac mit Umlauten (Ä in WAENDE etc.)
+            # eine UnicodeDecodeError ueber die IronPython<->.NET-Bruecke. Wir benutzen
+            # stattdessen unsere ASCII-only UserStrings (dossier_id + dossier_code) die wir
+            # beim Layer-Bau gesetzt haben.
+            nm = _safe_layer_label(doc, layer, a.LayerIndex)
+            layer_names.add(nm)
+
+        # Fuellung
+        if _is_closed_planar_curve(obj.Geometry):
+            has_closed_curves = True
+            hatch_id_str = a.GetUserString(_FILL_KEY)
+            hatch_obj = None
+            if hatch_id_str:
+                try:
+                    hatch_obj = doc.Objects.FindId(System.Guid(hatch_id_str))
+                except Exception:
+                    hatch_obj = None
+            if hatch_obj is not None and not hatch_obj.IsDeleted:
+                fill_enabled.add(True)
+                ha = hatch_obj.Attributes
+                # Source aus UserString-Marker, faellt auf ColorSource zurueck
+                src_marker = None
+                try:
+                    src_marker = ha.GetUserString(_FILL_SOURCE_KEY)
+                except Exception:
+                    src_marker = None
+                if src_marker == "layer":
+                    fill_sources.add("layer")
+                elif src_marker == "object":
+                    fill_sources.add("object")
+                elif int(ha.ColorSource) == int(_FROM_LAYER):
+                    fill_sources.add("layer")
+                else:
+                    fill_sources.add("object")
+                if int(ha.ColorSource) == int(_FROM_LAYER):
+                    if ha.LayerIndex >= 0 and ha.LayerIndex < doc.Layers.Count:
+                        c = _color_to_hex(doc.Layers[ha.LayerIndex].Color)
+                        if c: fill_colors.add(c)
+                else:
+                    c = _color_to_hex(ha.ObjectColor)
+                    if c: fill_colors.add(c)
+                try:
+                    hg = hatch_obj.Geometry
+                    pn = _pattern_name(doc, hg.PatternIndex)
+                    if pn: fill_patterns.add(pn)
+                    # Print-Mode-aware: bei aktivem Print zeigen wir die
+                    # "echte" Skala (= das Original vor der Massstab-
+                    # Multiplikation), nicht den display-skalierten Wert.
+                    eff_scale = hg.PatternScale
+                    try:
+                        orig = hatch_obj.Attributes.GetUserString("dossier_hatch_scale_orig")
+                        if orig: eff_scale = float(orig)
+                    except Exception: pass
+                    fill_scales.add(round(eff_scale, 4))
+                    fill_rots.add(round(math.degrees(hg.PatternRotation), 2))
+                except Exception:
+                    pass
+            else:
+                fill_enabled.add(False)
+                # Tri-State auch ohne Hatch melden:
+                #   NO_FILL_KEY=='1'           -> "none"  (User hat explizit aus)
+                #   Curve auf DOSSIER-Sublayer  -> "layer" (folgt Ebene, aktuell leer)
+                #   sonst                       -> "none"
+                try:
+                    no_fill = (a.GetUserString(_NO_FILL_KEY) == "1")
+                except Exception:
+                    no_fill = False
+                if no_fill:
+                    fill_sources.add("none")
+                else:
+                    on_dossier_layer = False
+                    if a.LayerIndex >= 0 and a.LayerIndex < doc.Layers.Count:
+                        try:
+                            tc = doc.Layers[a.LayerIndex].GetUserString("dossier_code")
+                            on_dossier_layer = bool(tc)
+                        except Exception:
+                            on_dossier_layer = False
+                    fill_sources.add("layer" if on_dossier_layer else "none")
+
+    def single(s):
+        return next(iter(s)) if len(s) == 1 else None
+
+    cs = single(color_sources); ls = single(lw_sources); lts_ = single(lt_sources)
+
+    result = dict(base)
+    result.update({
+        "count":          len(objs),
+        "colorSource":    "layer" if cs == int(_FROM_LAYER) else ("object" if cs == int(_FROM_OBJECT) else "mixed"),
+        "color":          single(colors),
+        "lwSource":       "layer" if ls == int(_LW_FROM_LAYER) else ("object" if ls == int(_LW_FROM_OBJECT) else "mixed"),
+        "lw":             single(lws),
+        "linetypeSource": "layer" if lts_ == int(_LT_FROM_LAYER) else ("object" if lts_ == int(_LT_FROM_OBJECT) else "mixed"),
+        "linetype":       single(lts),
+        "linetypeScale":  single(lt_scales),
+        "layerColor":     single(layer_colors),
+        "layerLw":        single(layer_lws),
+        "layerLinetype":  single(layer_lts),
+        "layerName":      single(layer_names),
+        "canFill":        has_closed_curves,
+        "fillEnabled":    single(fill_enabled),
+        "fillColor":      single(fill_colors),
+        "fillSource":     single(fill_sources),
+        "fillPattern":    single(fill_patterns),
+        "fillScale":      single(fill_scales),
+        "fillRotation":   single(fill_rots),
+        "hatchPatterns":  _all_hatch_patterns(doc),
+    })
+    print("[GESTALTUNG] sel: n={} colorSrc={} color={} layerColor={}".format(
+        result.get("count"), result.get("colorSource"),
+        result.get("color"), result.get("layerColor")))
+    return result
+
+
+class GestaltungBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "gestaltung")
+
+    def _on_ready(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        try:
+            before = doc.Linetypes.Count
+            ok = _force_load_linetypes(doc)
+            after = doc.Linetypes.Count
+            print("[GESTALTUNG] Linetypes vor: {}, nach LoadDefaults({}): {}".format(before, ok, after))
+            entries = []
+            for i in range(after):
+                lt = doc.Linetypes[i]
+                if lt is None: continue
+                try:    flags = "del" if lt.IsDeleted else ("ref" if lt.IsReference else "ok")
+                except Exception: flags = "?"
+                try:    nm = lt.Name
+                except Exception: nm = "?"
+                entries.append("[{}] {} ({})".format(i, nm, flags))
+            print("[GESTALTUNG] {}".format(" | ".join(entries)))
+        except Exception as ex:
+            print("[GESTALTUNG] Linetype-Diagnose:", ex)
+        # One-Shot Repair: aeltere Hatches (vor dem PlotColor-Fix angelegt)
+        # bekommen ihre Print-Attribute mit Display synchronisiert.
+        try:
+            repair_plot_colors(doc)
+        except Exception as ex:
+            print("[GESTALTUNG] repair on ready:", ex)
+        self._send_selection()
+
+    def handle(self, data):
+        if not isinstance(data, dict):
+            return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict):
+            p = {}
+
+        if t == "READY":
+            self._on_ready()
+        elif t == "GET_SELECTION":
+            self._send_selection()
+        elif t == "SET_COLOR_SOURCE":
+            self._set_color_source(p.get("source", "layer"), p.get("color"))
+        elif t == "SET_LW_SOURCE":
+            self._set_lw_source(p.get("source", "layer"), p.get("lw"))
+        elif t == "SET_LINETYPE_SOURCE":
+            self._set_linetype_source(p.get("source", "layer"), p.get("name"))
+        elif t == "SET_LINETYPE_SCALE":
+            self._set_linetype_scale(p.get("scale"))
+        elif t == "SET_FILL":
+            self._set_fill(
+                bool(p.get("enabled")),
+                p.get("source", "object"),
+                p.get("color"),
+                p.get("pattern"),
+                p.get("scale"),
+                p.get("rotation"),
+            )
+
+    def _send_selection(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        try:
+            self.send("SELECTION", _selection_summary(doc))
+        except Exception as ex:
+            print("[GESTALTUNG] Selection:", ex)
+
+    # ---- Attribute-Setter ------------------------------------------------
+
+    def _modify_each(self, mutator):
+        """mutator(attrs) muss die Attrs in-place anpassen."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = list(doc.Objects.GetSelectedObjects(False, False))
+        for obj in objs:
+            a = obj.Attributes.Duplicate()
+            mutator(a, obj)
+            doc.Objects.ModifyAttributes(obj, a, True)
+        doc.Views.Redraw()
+        self._send_selection()
+
+    def _set_color_source(self, source, color_hex):
+        col = _hex_to_color(color_hex) if (source == "object" and color_hex) else None
+        def m(a, _obj):
+            if source == "layer":
+                a.ColorSource = _FROM_LAYER
+            else:
+                a.ColorSource = _FROM_OBJECT
+                if col is not None: a.ObjectColor = col
+            # Plot-Pendant mitspiegeln — sonst druckt eine Curve mit eigener
+            # Display-Farbe trotzdem in Layerfarbe (PlotColorSource bleibt
+            # auf Default 'PlotColorFromLayer').
+            _sync_plot_color_to_display(a)
+        self._modify_each(m)
+
+    def _set_lw_source(self, source, lw):
+        # Print-Mode-aware: bei aktivem Print-View werden PlotWeights skaliert.
+        # write_plotweight() kuemmert sich um beides (Original-Speicherung +
+        # Skalierungs-Multiplier).
+        try:
+            import massstab
+        except Exception:
+            massstab = None
+        doc = Rhino.RhinoDoc.ActiveDoc
+        def m(a, _obj):
+            if source == "layer":
+                a.PlotWeightSource = _LW_FROM_LAYER
+            else:
+                a.PlotWeightSource = _LW_FROM_OBJECT
+                if lw is not None:
+                    if massstab is not None:
+                        massstab.write_plotweight(doc, a, float(lw))
+                    else:
+                        a.PlotWeight = float(lw)
+        self._modify_each(m)
+
+    def _set_linetype_scale(self, scale):
+        if scale is None: return
+        try:
+            s = float(scale)
+        except Exception:
+            return
+        if s <= 0: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = list(doc.Objects.GetSelectedObjects(False, False))
+        ok = 0
+        for obj in objs:
+            a = obj.Attributes.Duplicate()
+            applied = False
+            # Versuch 1: Attribut-Property (Rhino 8)
+            for prop in ("LinetypePatternLengthScale", "LinetypeScale"):
+                if hasattr(a, prop):
+                    try:
+                        setattr(a, prop, s)
+                        doc.Objects.ModifyAttributes(obj, a, True)
+                        applied = True
+                        break
+                    except Exception as ex:
+                        print("[GESTALTUNG] attr {} fehler: {}".format(prop, ex))
+            # Versuch 2: direkt auf RhinoObject
+            if not applied:
+                for prop in ("LinetypePatternLengthScale", "LinetypeScale"):
+                    if hasattr(obj, prop):
+                        try:
+                            setattr(obj, prop, s)
+                            applied = True
+                            break
+                        except Exception as ex:
+                            print("[GESTALTUNG] obj {} fehler: {}".format(prop, ex))
+            if applied:
+                ok += 1
+        doc.Views.Redraw()
+        if ok == 0:
+            print("[GESTALTUNG] Linetype-Scale nicht unterstuetzt (Rhino-Version?)")
+        else:
+            print("[GESTALTUNG] Linetype-Scale auf {} Objekt(e) angewendet".format(ok))
+        self._send_selection()
+
+    def _set_linetype_source(self, source, name):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        idx = -1
+        if source == "object" and name:
+            try:
+                idx = doc.Linetypes.Find(name, True)
+            except Exception:
+                idx = -1
+        def m(a, _obj):
+            if source == "layer":
+                a.LinetypeSource = _LT_FROM_LAYER
+            else:
+                a.LinetypeSource = _LT_FROM_OBJECT
+                if idx >= 0: a.LinetypeIndex = idx
+        self._modify_each(m)
+
+    # ---- Fuellung (Hatch) -----------------------------------------------
+
+    def _set_fill(self, enabled, source, color_hex, pattern_name=None, scale=None, rotation_deg=None):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        objs = list(doc.Objects.GetSelectedObjects(False, False))
+        is_layer_source = (source == "layer")
+
+        # Werte aus React (nur fuer Object-Source relevant)
+        passed_pattern_idx = -1
+        if pattern_name:
+            passed_pattern_idx = doc.HatchPatterns.Find(pattern_name, True)
+        if passed_pattern_idx < 0:
+            passed_pattern_idx = doc.HatchPatterns.Find("Solid", True)
+        if passed_pattern_idx < 0:
+            passed_pattern_idx = doc.HatchPatterns.CurrentHatchPatternIndex
+        passed_color   = _hex_to_color(color_hex) if color_hex else _hex_to_color("#cccccc")
+        passed_scale   = float(scale) if scale is not None else 1.0
+        passed_rot_rad = math.radians(float(rotation_deg)) if rotation_deg is not None else 0.0
+
+        for obj in objs:
+            geom = obj.Geometry
+            if not _is_closed_planar_curve(geom):
+                continue
+            a = obj.Attributes
+            existing_id_str = a.GetUserString(_FILL_KEY)
+            existing_hatch = None
+            if existing_id_str:
+                try:
+                    existing_hatch = doc.Objects.FindId(System.Guid(existing_id_str))
+                except Exception:
+                    existing_hatch = None
+
+            # Effektive Werte je nach Source bestimmen
+            # "Nach Ebene" = die fill-Settings der zugehoerigen DOSSIER-Ebene
+            # (Pattern/Scale/Rotation/Source/Color aus dem Ebenen-Einstellungen-Dialog).
+            if is_layer_source:
+                layer_idx = a.LayerIndex
+                layer = doc.Layers[layer_idx] if 0 <= layer_idx < doc.Layers.Count else None
+                fill = _ebene_fill_for_layer(doc, layer) if layer is not None else None
+                if fill is None or fill["pattern"] == "None":
+                    # "Nach Ebene" aber die Ebene hat KEINE Fuellung definiert:
+                    # nichts erzeugen — Curve in "folgt Ebene, aktuell leer"-Zustand
+                    # setzen, damit sie spaeter Auto-Fill bekommt, sobald die Ebene
+                    # ein Pattern bekommt. KEIN Solid-Fallback (gab eine Solid in
+                    # Stiftfarbe, was nicht gewollt ist).
+                    if existing_hatch is not None and not existing_hatch.IsDeleted:
+                        _processing.add(existing_hatch.Id)
+                        try: doc.Objects.Delete(existing_hatch.Id, True)
+                        finally: _processing.discard(existing_hatch.Id)
+                    try:
+                        ca = obj.Attributes.Duplicate()
+                        ca.SetUserString(_FILL_KEY, "")
+                        ca.SetUserString(_NO_FILL_KEY, "")
+                        _processing.add(obj.Id)
+                        try: doc.Objects.ModifyAttributes(obj, ca, True)
+                        finally: _processing.discard(obj.Id)
+                    except Exception as ex:
+                        print("[GESTALTUNG] _set_fill follow-layer empty:", ex)
+                    continue
+                else:
+                    pattern_idx = doc.HatchPatterns.Find(fill["pattern"], True)
+                    if pattern_idx < 0:
+                        pattern_idx = doc.HatchPatterns.Find("Solid", True)
+                    if pattern_idx < 0:
+                        pattern_idx = doc.HatchPatterns.CurrentHatchPatternIndex
+                    scale_v     = float(fill["scale"]) or 1.0
+                    rot_rad     = math.radians(float(fill["rotation"]))
+                    eff_from_layer = (fill["source"] == "layer")
+                    eff_color   = _hex_to_color(fill.get("color") or "#888888") if not eff_from_layer else passed_color
+            else:
+                pattern_idx = passed_pattern_idx
+                scale_v     = passed_scale
+                rot_rad     = passed_rot_rad
+                eff_from_layer = False  # Eigene Quelle -> Farbe vom Objekt
+                eff_color      = passed_color
+
+            # Massstab-Multiplikator anwenden (Paper-Skala * 1:N).
+            try:
+                import massstab
+                _m = massstab.get_current_massstab_factor(doc)
+                if _m and _m > 0:
+                    scale_v = scale_v * _m
+            except Exception:
+                pass
+
+            if enabled:
+                # Marker "keine Fuellung" aufheben — User will explizit fuellen
+                try:
+                    if a.GetUserString(_NO_FILL_KEY):
+                        ca = obj.Attributes.Duplicate()
+                        ca.SetUserString(_NO_FILL_KEY, "")
+                        _processing.add(obj.Id)
+                        try: doc.Objects.ModifyAttributes(obj, ca, True)
+                        finally: _processing.discard(obj.Id)
+                except Exception:
+                    pass
+                if existing_hatch is not None and not existing_hatch.IsDeleted:
+                    # Pattern / Scale / Rotation: nur Geometrie ersetzen wenn anders
+                    try:
+                        hg              = existing_hatch.Geometry
+                        cur_pattern_idx = hg.PatternIndex
+                        cur_scale       = hg.PatternScale
+                        cur_rot         = hg.PatternRotation
+                    except Exception:
+                        cur_pattern_idx = pattern_idx
+                        cur_scale       = scale_v
+                        cur_rot         = rot_rad
+                    needs_rebuild = (
+                        cur_pattern_idx != pattern_idx
+                        or abs(cur_scale - scale_v) > 1e-6
+                        or abs(cur_rot   - rot_rad) > 1e-6
+                    )
+                    if needs_rebuild:
+                        try:
+                            new_hatches = rg.Hatch.Create(geom, pattern_idx, rot_rad, scale_v, 0.0)
+                        except Exception:
+                            new_hatches = None
+                        if new_hatches and len(new_hatches) > 0:
+                            _processing.add(existing_hatch.Id)
+                            try:
+                                doc.Objects.Replace(existing_hatch.Id, new_hatches[0])
+                            finally:
+                                _processing.discard(existing_hatch.Id)
+                            # Replace: Original-Wert + ggf. Print-Skalierung aktualisieren
+                            try:
+                                import massstab as _ms2
+                                h_obj = doc.Objects.FindId(existing_hatch.Id)
+                                if h_obj is not None:
+                                    _ms2.post_create_hatch_scale(doc, h_obj, scale_v)
+                            except Exception as _ex:
+                                print("[GESTALTUNG] post_create_hatch_scale (replace):", _ex)
+                    # Farbe / Source / FILL_SOURCE-Marker aktualisieren
+                    refreshed = doc.Objects.FindId(existing_hatch.Id) or existing_hatch
+                    ha = refreshed.Attributes.Duplicate()
+                    if eff_from_layer:
+                        ha.ColorSource = _FROM_LAYER
+                    else:
+                        ha.ColorSource = _FROM_OBJECT
+                        ha.ObjectColor = eff_color
+                    ha.SetUserString(_FILL_SOURCE_KEY, "layer" if is_layer_source else "object")
+                    _sync_plot_color_to_display(ha)
+                    _processing.add(refreshed.Id)
+                    try:
+                        doc.Objects.ModifyAttributes(refreshed, ha, True)
+                    finally:
+                        _processing.discard(refreshed.Id)
+                else:
+                    try:
+                        hatches = rg.Hatch.Create(geom, pattern_idx, rot_rad, scale_v, 0.0)
+                    except Exception:
+                        hatches = None
+                    if hatches and len(hatches) > 0:
+                        new_attrs = Rhino.DocObjects.ObjectAttributes()
+                        if eff_from_layer:
+                            new_attrs.ColorSource = _FROM_LAYER
+                        else:
+                            new_attrs.ColorSource = _FROM_OBJECT
+                            new_attrs.ObjectColor = eff_color
+                        new_attrs.LayerIndex = a.LayerIndex
+                        new_attrs.SetUserString(_FILL_OWNER_KEY, str(obj.Id))
+                        new_attrs.SetUserString(_FILL_SOURCE_KEY,
+                                                "layer" if is_layer_source else "object")
+                        _sync_plot_color_to_display(new_attrs)
+                        hatch_id = doc.Objects.AddHatch(hatches[0], new_attrs)
+                        if hatch_id != System.Guid.Empty:
+                            ca = obj.Attributes.Duplicate()
+                            ca.SetUserString(_FILL_KEY, str(hatch_id))
+                            _processing.add(obj.Id)
+                            try:
+                                doc.Objects.ModifyAttributes(obj, ca, True)
+                            finally:
+                                _processing.discard(obj.Id)
+                            _link_curve_hatch(obj.Id, hatch_id)
+                            # Neue Hatch: Print-Mode-aware skalieren
+                            try:
+                                import massstab as _ms
+                                h_obj = doc.Objects.FindId(hatch_id)
+                                if h_obj is not None:
+                                    _ms.post_create_hatch_scale(doc, h_obj, scale_v)
+                            except Exception as _ex:
+                                print("[GESTALTUNG] post_create_hatch_scale (set_fill):", _ex)
+            else:
+                if existing_hatch is not None and not existing_hatch.IsDeleted:
+                    _processing.add(existing_hatch.Id)
+                    try:
+                        doc.Objects.Delete(existing_hatch.Id, True)
+                    finally:
+                        _processing.discard(existing_hatch.Id)
+                ca = obj.Attributes.Duplicate()
+                ca.SetUserString(_FILL_KEY, "")
+                # Marker setzen: Auto-Fill ueberspringt diese Curve in Zukunft
+                ca.SetUserString(_NO_FILL_KEY, "1")
+                _processing.add(obj.Id)
+                try:
+                    doc.Objects.ModifyAttributes(obj, ca, True)
+                finally:
+                    _processing.discard(obj.Id)
+
+        doc.Views.Redraw()
+        self._send_selection()
+
+
+# --- Selection-Events ----------------------------------------------------
+
+def _install_selection_listener(bridge):
+    flag = "gestaltung_selection_listener"
+    sc.sticky["gestaltung_bridge"] = bridge
+    if sc.sticky.get(flag):
+        return
+
+    def refresh(*args):
+        b = sc.sticky.get("gestaltung_bridge")
+        if b is not None:
+            try: b._send_selection()
+            except Exception: pass
+
+    def on_replace(sender, args):
+        """Hatch der zugehoerigen Curve mitziehen wenn Curve veraendert wird."""
+        new_obj = args.NewRhinoObject
+        if new_obj is None or new_obj.Id in _processing:
+            return
+        a = new_obj.Attributes
+        hatch_id_str = a.GetUserString(_FILL_KEY)
+        if not hatch_id_str:
+            return
+        print("[GESTALTUNG] on_replace fuer Curve mit Fill")
+        try:
+            hatch_id = System.Guid(hatch_id_str)
+        except Exception:
+            return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        hatch_obj = doc.Objects.FindId(hatch_id)
+        if hatch_obj is None or hatch_obj.IsDeleted:
+            return
+        geom = new_obj.Geometry
+        if not _is_closed_planar_curve(geom):
+            return
+        try:
+            hg          = hatch_obj.Geometry
+            pattern_idx = hg.PatternIndex
+            cur_scale   = hg.PatternScale
+            cur_rot     = hg.PatternRotation
+        except Exception:
+            pattern_idx = doc.HatchPatterns.CurrentHatchPatternIndex
+            cur_scale   = 1.0
+            cur_rot     = 0.0
+        try:
+            new_hatches = rg.Hatch.Create(geom, pattern_idx, cur_rot, cur_scale, 0.0)
+        except Exception:
+            return
+        if not new_hatches or len(new_hatches) == 0:
+            return
+        _processing.add(hatch_id)
+        try:
+            doc.Objects.Replace(hatch_id, new_hatches[0])
+        except Exception as ex:
+            print("[GESTALTUNG] Hatch-Update:", ex)
+        finally:
+            _processing.discard(hatch_id)
+
+    def on_delete(sender, args):
+        """Wenn eine Curve geloescht wird, ihre gekoppelte Hatch mitloeschen.
+        Wenn umgekehrt eine Hatch direkt geloescht wird, den Verweis auf der
+        Curve aufraeumen damit beim naechsten Toggle keine Geister-Referenz steht."""
+        obj = args.TheObject
+        try:
+            print("[GESTALTUNG] on_delete fired id={}".format(obj.Id if obj else None))
+        except Exception:
+            pass
+        if obj is None or obj.Id in _processing:
+            return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        try:
+            attrs = obj.Attributes
+        except Exception:
+            return
+
+        # Pfad A: geloeschte Curve hatte eine Hatch -> Hatch mitloeschen
+        try:
+            hatch_id_str = attrs.GetUserString(_FILL_KEY)
+        except Exception:
+            hatch_id_str = None
+        # Fallback: Mapping in sc.sticky (UserStrings koennen nach Delete leer sein)
+        if not hatch_id_str:
+            hatch_id_str = _lookup_hatch_for_curve(obj.Id)
+            if hatch_id_str:
+                print("[GESTALTUNG] on_delete: hatch via sticky map gefunden")
+        if hatch_id_str:
+            try:
+                hatch_id = System.Guid(hatch_id_str)
+            except Exception:
+                hatch_id = None
+            if hatch_id is not None:
+                hatch_obj = doc.Objects.FindId(hatch_id)
+                if hatch_obj is not None and not hatch_obj.IsDeleted:
+                    # Metadaten merken fuer eventuelles Drag-Recovery (Rhino feuert
+                    # bei Drag/Move oft on_delete+on_add statt on_replace)
+                    _save_pending_hatch(obj.Id, hatch_obj)
+                    _processing.add(hatch_id)
+                    try:
+                        ok = doc.Objects.Delete(hatch_id, True)
+                        print("[GESTALTUNG] Curve geloescht -> Hatch {} ({})".format(
+                            "weg" if ok else "konnte nicht geloescht werden", hatch_id))
+                    except Exception as ex:
+                        print("[GESTALTUNG] Hatch-Loeschen:", ex)
+                    finally:
+                        _processing.discard(hatch_id)
+            _unlink_curve(obj.Id)
+            return  # Curve-Fall fertig
+
+        # Pfad B: geloeschte Hatch hatte einen Owner-Verweis -> Curve aufraeumen
+        try:
+            owner_id_str = attrs.GetUserString(_FILL_OWNER_KEY)
+        except Exception:
+            owner_id_str = None
+        if owner_id_str:
+            try:
+                owner_id = System.Guid(owner_id_str)
+            except Exception:
+                owner_id = None
+            if owner_id is not None:
+                owner_obj = doc.Objects.FindId(owner_id)
+                if owner_obj is not None and not owner_obj.IsDeleted:
+                    try:
+                        ca = owner_obj.Attributes.Duplicate()
+                        ca.SetUserString(_FILL_KEY, "")
+                        _processing.add(owner_id)
+                        try:
+                            doc.Objects.ModifyAttributes(owner_obj, ca, True)
+                        finally:
+                            _processing.discard(owner_id)
+                    except Exception as ex:
+                        print("[GESTALTUNG] Curve-Verweis aufraeumen:", ex)
+
+    def on_add(sender, args):
+        """Auto-Fill bzw. Drag-Recovery: neues Objekt -> ggf. Hatch erzeugen.
+        - Wenn das Objekt eben gerade als Teil eines Drag/Move geloescht wurde,
+          stellen wir die Hatch mit den gemerkten Metadaten wieder her.
+        - Sonst pruefen wir ob die Ebene ein Auto-Fill konfiguriert hat."""
+        obj = args.TheObject
+        if obj is None:
+            return
+        try:
+            geom_kind = type(obj.Geometry).__name__
+        except Exception:
+            geom_kind = "?"
+        if obj.Id in _processing:
+            return
+        print("[GESTALTUNG] on_add: id={} type={}".format(obj.Id, geom_kind))
+        doc = Rhino.RhinoDoc.ActiveDoc
+
+        # 1) Drag-Recovery: Hatch-Metadaten wurden gerade in on_delete gespeichert?
+        pending = _take_pending_hatch(obj.Id)
+        if pending is not None:
+            try:
+                ok = _restore_hatch_from_pending(doc, obj, pending)
+            except Exception as ex:
+                print("[GESTALTUNG] on_add restore Exception:", ex)
+                ok = False
+            if ok:
+                print("[GESTALTUNG] Drag-Recovery: Hatch wiederhergestellt fuer {}".format(obj.Id))
+                b = sc.sticky.get("gestaltung_bridge")
+                if b is not None:
+                    try: b._send_selection()
+                    except Exception: pass
+                return
+
+        # 2) Auto-Fill aus Ebenen-Definition
+        try:
+            ok = _apply_ebene_fill(doc, obj)
+        except Exception as ex:
+            print("[GESTALTUNG] on_add Exception:", ex)
+            return
+        print("[GESTALTUNG] on_add ok={}".format(ok))
+        if ok:
+            b = sc.sticky.get("gestaltung_bridge")
+            if b is not None:
+                try: b._send_selection()
+                except Exception: pass
+
+    def on_modify_attrs(sender, args):
+        """Reagiert auf Attribut-Aenderungen an Objekten:
+        1) Curve auf neue Ebene -> gekoppelte Hatch zieht mit
+        2) ColorSource -> FromObject -> PlotColorSource/PlotColor mitsynchen
+           (sonst druckt das Objekt trotz eigener Display-Farbe in Layerfarbe)."""
+        try:
+            obj      = args.RhinoObject
+            old_attr = args.OldAttributes
+            new_attr = args.NewAttributes
+            old_lyr  = old_attr.LayerIndex
+            new_lyr  = new_attr.LayerIndex
+        except Exception:
+            return
+        if obj is None or obj.Id in _processing:
+            return
+
+        # --- (2) Plot-Color Auto-Sync ---
+        try:
+            new_cs = int(new_attr.ColorSource)
+            if new_cs == int(_FROM_OBJECT):
+                new_pcs = int(new_attr.PlotColorSource)
+                need_pcs  = (new_pcs != int(_PLOT_FROM_OBJECT))
+                need_pcol = False
+                try:
+                    need_pcol = (int(new_attr.PlotColor.ToArgb()) != int(new_attr.ObjectColor.ToArgb()))
+                except Exception:
+                    need_pcol = True
+                if need_pcs or need_pcol:
+                    doc = Rhino.RhinoDoc.ActiveDoc
+                    ha = new_attr.Duplicate()
+                    _sync_plot_color_to_display(ha)
+                    _processing.add(obj.Id)
+                    try:
+                        doc.Objects.ModifyAttributes(obj, ha, True)
+                    finally:
+                        _processing.discard(obj.Id)
+        except Exception as ex:
+            print("[GESTALTUNG] on_modify_attrs plot-sync:", ex)
+
+        # --- (1) Layer-Wechsel -> Hatch mitziehen ---
+        if old_lyr == new_lyr:
+            return
+        try:
+            hatch_id_str = new_attr.GetUserString(_FILL_KEY)
+        except Exception:
+            hatch_id_str = None
+        if not hatch_id_str:
+            return  # nur Curves mit gekoppelter Hatch interessieren uns
+        try:
+            hatch_id = System.Guid(hatch_id_str)
+        except Exception:
+            return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        hatch_obj = doc.Objects.FindId(hatch_id)
+        if hatch_obj is None or hatch_obj.IsDeleted:
+            return
+        try:
+            ha = hatch_obj.Attributes.Duplicate()
+            if ha.LayerIndex == new_lyr:
+                return
+            ha.LayerIndex = new_lyr
+            _processing.add(hatch_id)
+            try:
+                doc.Objects.ModifyAttributes(hatch_obj, ha, True)
+            finally:
+                _processing.discard(hatch_id)
+            print("[GESTALTUNG] Curve {} Layer geaendert -> Hatch mitgezogen".format(obj.Id))
+        except Exception as ex:
+            print("[GESTALTUNG] on_modify_attrs:", ex)
+            return
+        # Falls die neue Ebene andere Fill-Settings hat (Pattern/Skala/Drehung),
+        # die Hatch entsprechend an die neue Layer-Definition angleichen.
+        try:
+            refresh_layer_fills(doc)
+        except Exception as ex:
+            print("[GESTALTUNG] on_modify_attrs refresh:", ex)
+
+    Rhino.RhinoDoc.SelectObjects         += refresh
+    Rhino.RhinoDoc.DeselectObjects       += refresh
+    Rhino.RhinoDoc.DeselectAllObjects    += refresh
+    Rhino.RhinoDoc.ReplaceRhinoObject    += on_replace
+    Rhino.RhinoDoc.DeleteRhinoObject     += on_delete
+    Rhino.RhinoDoc.AddRhinoObject        += on_add
+    Rhino.RhinoDoc.ModifyObjectAttributes += on_modify_attrs
+    sc.sticky[flag] = True
+    print("[GESTALTUNG] Listener aktiv (Selection + Hatch-Live-Update + Ebene-Auto-Fill + Layer-Sync)")
+
+
+def _bridge_factory():
+    b = GestaltungBridge()
+    _install_selection_listener(b)
+    return b
+
+
+panel_base.register_and_open("gestaltung", "GESTALTUNG", PANEL_GUID_STR, _bridge_factory,
+                             icon_spec=("G", "#5fa896"))
diff --git a/rhino/inspect_section.py b/rhino/inspect_section.py
new file mode 100644
index 0000000..373693b
--- /dev/null
+++ b/rhino/inspect_section.py
@@ -0,0 +1,163 @@
+# ! python3
+"""
+inspect_section.py
+Schreibt ALLE Eigenschaften der SectionStyle der aktuellen Ebene ins Log,
+ohne dass irgendein Panel-Setup gebraucht wird.
+
+Aufruf:
+    _-RunPythonScript "/Users/karim/STUDIO/rhino-panel/rhino/inspect_section.py"
+"""
+import Rhino
+
+
+def dump(label, obj):
+    print("--- {} ({})".format(label, type(obj).__name__ if obj is not None else "None"))
+    if obj is None:
+        return
+    for name in dir(obj):
+        if name.startswith("_"):
+            continue
+        try:
+            v = getattr(obj, name)
+        except Exception as ex:
+            print("  {} -> err: {}".format(name, ex))
+            continue
+        if callable(v):
+            continue
+        try:
+            print("  {} = {!r}".format(name, v))
+        except Exception:
+            try:
+                print("  {} = (unprintable)".format(name))
+            except Exception:
+                pass
+
+
+doc   = Rhino.RhinoDoc.ActiveDoc
+layer = doc.Layers.CurrentLayer
+print("============================================")
+print("Aktive Ebene:")
+print("  Name        =", layer.Name)
+try: print("  Id          =", layer.Id)
+except Exception: pass
+
+print("\n--- Layer-Properties die mit 'Section' anfangen ---")
+for n in dir(layer):
+    if n.startswith("_"):
+        continue
+    if "section" in n.lower() or "hatch" in n.lower() or "fill" in n.lower():
+        try:
+            v = getattr(layer, n)
+            if callable(v):
+                continue
+            print("  layer.{} = {!r}".format(n, v))
+        except Exception as ex:
+            print("  layer.{} -> err: {}".format(n, ex))
+
+# layer.SectionStyle dumpen wenn vorhanden
+try:
+    if hasattr(layer, "SectionStyle"):
+        dump("layer.SectionStyle", layer.SectionStyle)
+except Exception as ex:
+    print("  layer.SectionStyle err:", ex)
+
+# Via doc.SectionStyles + layer.SectionStyleId
+try:
+    if hasattr(layer, "SectionStyleId"):
+        sid = layer.SectionStyleId
+        print("\n  layer.SectionStyleId =", sid)
+        for tname in ("SectionStyles", "SectionAttributes"):
+            if hasattr(doc, tname):
+                tbl = getattr(doc, tname)
+                print("  doc.{} =".format(tname), tbl, "Count:",
+                      getattr(tbl, "Count", "?"))
+                try:
+                    ss = tbl.FindId(sid)
+                    dump("doc.{}.FindId({})".format(tname, sid), ss)
+                except Exception as ex:
+                    print("  FindId err:", ex)
+except Exception as ex:
+    print("SectionStyleId-Zweig err:", ex)
+
+print("\n--- Doc-Tabellen (alles was 'Section' enthaelt) ---")
+for n in dir(doc):
+    if n.startswith("_"): continue
+    if "section" in n.lower():
+        try:
+            v = getattr(doc, n)
+            if callable(v): continue
+            print("  doc.{} = {!r} (count={})".format(
+                n, v, getattr(v, "Count", "?")))
+        except Exception as ex:
+            print("  doc.{} -> err: {}".format(n, ex))
+
+print("\n--- Layer UserDictionary ---")
+try:
+    ud = layer.UserDictionary
+    cnt = ud.Count
+    print("  Count:", cnt)
+    for key in ud.Keys:
+        try:
+            v = ud[key]
+            print("    [{}] = {!r}  (type={})".format(key, v, type(v).__name__))
+        except Exception as ex:
+            print("    [{}] err: {}".format(key, ex))
+except Exception as ex:
+    print("  UserDictionary err:", ex)
+
+print("\n--- Layer UserStrings (NameValueCollection) ---")
+try:
+    nvc = layer.GetUserStrings()
+    print("  Count:", nvc.Count)
+    for k in nvc.AllKeys:
+        print("    [{}] = {!r}".format(k, nvc[k]))
+except Exception as ex:
+    print("  GetUserStrings err:", ex)
+# Fallback: ueber Count + GetUserString
+try:
+    # Manche Rhino-Versionen haben GetUserStringKeys() oder iterieren anders
+    if hasattr(layer, "GetUserStringKeys"):
+        keys = layer.GetUserStringKeys()
+        print("  GetUserStringKeys ->", list(keys))
+except Exception as ex:
+    print("  GetUserStringKeys err:", ex)
+
+print("\n--- Layer UserData (Custom .NET Blobs) ---")
+try:
+    udl = layer.UserData
+    print("  Count:", udl.Count if udl else "None")
+    if udl:
+        for i in range(udl.Count):
+            ud_item = udl[i]
+            print("  UserData[{}]:".format(i))
+            for prop in ("Description", "Name", "Id", "DataCRC", "InstanceId"):
+                try:
+                    if hasattr(ud_item, prop):
+                        print("    {} = {!r}".format(prop, getattr(ud_item, prop)))
+                except Exception as ex:
+                    print("    {} err: {}".format(prop, ex))
+            print("    type:", type(ud_item).__name__)
+            print("    full type:", type(ud_item).__module__ + "." + type(ud_item).__name__)
+            # Dump alle public Attrs
+            for a in sorted(dir(ud_item)):
+                if a.startswith("_"): continue
+                try:
+                    v = getattr(ud_item, a)
+                    if callable(v): continue
+                    print("    .{} = {!r}".format(a, v))
+                except Exception:
+                    pass
+except Exception as ex:
+    print("  UserData err:", ex)
+
+print("\n--- Layer-Properties vollstaendig (alphabetisch) ---")
+for n in sorted(dir(layer)):
+    if n.startswith("_"): continue
+    try:
+        v = getattr(layer, n)
+        if callable(v): continue
+        print("  layer.{} = {!r}".format(n, v))
+    except Exception as ex:
+        print("  layer.{} -> err: {}".format(n, ex))
+
+print("============================================")
diff --git a/rhino/layer_builder.py b/rhino/layer_builder.py
new file mode 100644
index 0000000..094bd9f
--- /dev/null
+++ b/rhino/layer_builder.py
@@ -0,0 +1,436 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+layer_builder.py
+Layer-Struktur:
+  <Zeichnungsebene-Name>
+    +-- 00_RASTER
+    +-- 01_VERMESSUNG
+    +-- 20_WAENDE
+    +-- ...
+Jede Zeichnungsebene erhaelt alle definierten Ebenen als Sublayer.
+"""
+import System
+import System.Drawing as Drawing
+import Rhino
+
+GREY         = Drawing.Color.FromArgb(150, 150, 150)
+_FROM_LAYER  = Rhino.DocObjects.ObjectColorSource.ColorFromLayer
+_FROM_OBJECT = Rhino.DocObjects.ObjectColorSource.ColorFromObject
+_EMPTY_GUID  = System.Guid.Empty
+
+
+def _color(hex_str):
+    h = (hex_str or "#888888").lstrip("#")
+    if len(h) == 3:
+        h = "".join(c * 2 for c in h)
+    return Drawing.Color.FromArgb(int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16))
+
+
+def _is_top_level(layer):
+    return layer.ParentLayerId == _EMPTY_GUID
+
+
+def _find_top_by_id(doc, dossier_id):
+    for i, layer in enumerate(doc.Layers):
+        if not _is_top_level(layer):
+            continue
+        v = layer.GetUserString("dossier_id")
+        if v == dossier_id:
+            return i
+    return -1
+
+
+def _find_top_by_name(doc, name):
+    for i, layer in enumerate(doc.Layers):
+        if _is_top_level(layer) and layer.Name == name:
+            return i
+    return -1
+
+
+def _find_sublayer_by_code(doc, parent_id, code):
+    prefix = code + "_"
+    for i, layer in enumerate(doc.Layers):
+        if layer.ParentLayerId == parent_id and layer.Name.startswith(prefix):
+            return i
+    return -1
+
+
+def _add_layer(doc, name, parent_id=None, color=None, lw=None):
+    layer = Rhino.DocObjects.Layer()
+    layer.Name = name
+    if parent_id is not None and parent_id != _EMPTY_GUID:
+        layer.ParentLayerId = parent_id
+    if color is not None:
+        layer.Color = color
+    if lw is not None:
+        layer.PlotWeight = lw
+    return doc.Layers.Add(layer)
+
+
+def build_layers(doc, zeichnungsebenen, ebenen):
+    """
+    Stellt sicher dass fuer jede Zeichnungsebene ein Parent-Layer existiert
+    und unter jedem alle Ebenen als Sublayer angelegt/aktualisiert sind.
+    """
+    for z in zeichnungsebenen:
+        z_id   = z["id"]
+        z_name = z["name"]
+
+        # Parent finden oder anlegen
+        idx = _find_top_by_id(doc, z_id)
+        if idx < 0:
+            idx = _find_top_by_name(doc, z_name)
+        if idx < 0:
+            idx = _add_layer(doc, z_name)
+            doc.Layers[idx].SetUserString("dossier_id", z_id)
+        else:
+            parent = doc.Layers[idx]
+            if parent.Name != z_name:
+                parent.Name = z_name
+            parent.SetUserString("dossier_id", z_id)
+
+        parent_id = doc.Layers[idx].Id
+
+        # Sublayer pro Ebene
+        for e in ebenen:
+            sub_name = "{}_{}".format(e["code"], e["name"])
+            col      = _color(e.get("color"))
+            lw       = float(e.get("lw", 0.13))
+            sub_idx  = _find_sublayer_by_code(doc, parent_id, e["code"])
+            if sub_idx < 0:
+                sub_idx = _add_layer(doc, sub_name, parent_id, col, lw)
+                doc.Layers[sub_idx].SetUserString("dossier_code", e["code"])
+            else:
+                sub = doc.Layers[sub_idx]
+                if sub.Name != sub_name:
+                    sub.Name = sub_name
+                sub.Color = col
+                try:
+                    import massstab as _ms
+                    _ms.write_plotweight(doc, sub, float(lw))
+                except Exception:
+                    sub.PlotWeight = lw
+                sub.SetUserString("dossier_code", e["code"])
+
+    doc.Views.Redraw()
+    print("[EBENEN] {} Zeichnungsebenen x {} Ebenen aktualisiert".format(
+        len(zeichnungsebenen), len(ebenen)))
+
+
+def update_layer_style(doc, code, color_hex=None, lw=None):
+    """Aendert Farbe und/oder Stiftdicke fuer alle Sublayer mit dem gegebenen Code."""
+    col = _color(color_hex) if color_hex else None
+    try:
+        import massstab as _ms
+    except Exception:
+        _ms = None
+    for i, layer in enumerate(doc.Layers):
+        if _is_top_level(layer):
+            continue
+        if layer.Name.startswith(code + "_"):
+            if col is not None:
+                layer.Color = col
+            if lw is not None:
+                if _ms is not None:
+                    _ms.write_plotweight(doc, layer, float(lw))
+                else:
+                    layer.PlotWeight = float(lw)
+    doc.Views.Redraw()
+
+
+def set_ebene_visible(doc, code, visible):
+    """Schaltet alle Sublayer mit Code in/aus Zeichnungsebenen."""
+    for i, layer in enumerate(doc.Layers):
+        if _is_top_level(layer):
+            continue
+        if layer.Name.startswith(code + "_"):
+            layer.IsVisible = visible
+    doc.Views.Redraw()
+
+
+def set_ebene_locked(doc, code, locked):
+    for i, layer in enumerate(doc.Layers):
+        if _is_top_level(layer):
+            continue
+        if layer.Name.startswith(code + "_"):
+            layer.IsLocked = locked
+    doc.Views.Redraw()
+
+
+def delete_ebene(doc, code, move_to=None):
+    """
+    Loescht alle Sublayer mit dem gegebenen Code in allen Zeichnungsebenen.
+    Falls move_to gesetzt: verschiebt vorher alle Objekte zum Sublayer
+    mit move_to-Code unter dem selben Parent. Sonst: loescht Objekte mit.
+    """
+    if not code:
+        return
+
+    from_prefix = code + "_"
+    to_prefix   = (move_to + "_") if move_to else None
+
+    # Top-Level Parents finden
+    parents = [layer for layer in doc.Layers if _is_top_level(layer)]
+
+    moved = 0
+    deleted_objs = 0
+    deleted_layers = 0
+
+    for parent in parents:
+        from_layer = None
+        to_layer   = None
+        for layer in doc.Layers:
+            if layer.ParentLayerId != parent.Id:
+                continue
+            if layer.Name.startswith(from_prefix):
+                from_layer = layer
+            elif to_prefix and layer.Name.startswith(to_prefix):
+                to_layer = layer
+
+        if from_layer is None:
+            continue
+
+        from_idx = doc.Layers.FindByFullPath(from_layer.FullPath, -1)
+        if from_idx < 0:
+            continue
+
+        objs = list(doc.Objects.FindByLayer(doc.Layers[from_idx]))
+
+        if move_to and to_layer is not None:
+            to_idx = doc.Layers.FindByFullPath(to_layer.FullPath, -1)
+            if to_idx >= 0:
+                for obj in objs:
+                    attrs = obj.Attributes.Duplicate()
+                    attrs.LayerIndex = to_idx
+                    if doc.Objects.ModifyAttributes(obj, attrs, True):
+                        moved += 1
+        else:
+            for obj in objs:
+                if doc.Objects.Delete(obj.Id, True):
+                    deleted_objs += 1
+
+        # Sublayer loeschen
+        try:
+            if doc.Layers.Delete(from_idx, True):
+                deleted_layers += 1
+        except Exception as ex:
+            print("[EBENEN] Layer-Delete:", ex)
+
+    doc.Views.Redraw()
+    print("[EBENEN] Ebene {} entfernt: {} Sublayer, {} Objekte verschoben, {} Objekte geloescht".format(
+        code, deleted_layers, moved, deleted_objs))
+
+
+# --- Clipping Plane Management ----------------------------------------------
+
+_CLIP_KEY = "dossier_clipping_plane"
+
+
+def _find_clipping_plane(doc):
+    for obj in doc.Objects:
+        try:
+            if obj.Attributes.GetUserString(_CLIP_KEY) == "1":
+                return obj
+        except Exception:
+            pass
+    return None
+
+
+def update_clipping_plane(doc, active_z, enabled):
+    """
+    Erstellt/aktualisiert/entfernt die DOSSIER-Clipping-Plane an OKFF + Schnitthoehe
+    des aktiven Geschosses. Plane zeigt nach +Z, schneidet alles oberhalb weg.
+    """
+    import Rhino.Geometry as rg
+    existing = _find_clipping_plane(doc)
+    is_geschoss = bool(active_z and active_z.get("isGeschoss") and active_z.get("okff") is not None)
+    if (not enabled) or (not is_geschoss):
+        if existing is not None:
+            try:
+                doc.Objects.Delete(existing.Id, True)
+            except Exception:
+                pass
+        return
+    okff = float(active_z.get("okff", 0.0))
+    sh   = float(active_z.get("schnitthoehe", 1.0))
+    cut_z = okff + sh
+    plane = rg.Plane(rg.Point3d(0.0, 0.0, cut_z), rg.Vector3d.ZAxis)
+    du, dv = 50000.0, 50000.0
+    if existing is not None:
+        try:
+            new_surf = rg.PlaneSurface(plane, rg.Interval(-du/2.0, du/2.0), rg.Interval(-dv/2.0, dv/2.0))
+            doc.Objects.Replace(existing.Id, new_surf)
+        except Exception as ex:
+            print("[EBENEN] Clip-Update:", ex)
+    else:
+        vp_ids = []
+        for view in doc.Views:
+            try:
+                vp_ids.append(view.ActiveViewportID)
+            except Exception:
+                try: vp_ids.append(view.ActiveViewport.Id)
+                except Exception: pass
+        try:
+            new_id = doc.Objects.AddClippingPlane(plane, du, dv, vp_ids)
+            if new_id != System.Guid.Empty:
+                obj = doc.Objects.FindId(new_id)
+                if obj is not None:
+                    attrs = obj.Attributes.Duplicate()
+                    attrs.SetUserString(_CLIP_KEY, "1")
+                    attrs.Mode = Rhino.DocObjects.ObjectMode.Locked
+                    doc.Objects.ModifyAttributes(obj, attrs, True)
+                    print("[EBENEN] Clipping-Plane bei Z={} erstellt".format(cut_z))
+        except Exception as ex:
+            print("[EBENEN] Clip-Create:", ex)
+    doc.Views.Redraw()
+
+
+def cleanup_default_layers(doc):
+    """Loescht leere Rhino-Default-Layer (Default, Layer 01, ...) — nicht-leere bleiben unberuehrt."""
+    import re
+    pattern = re.compile(r'^(default|layer\s*0*\d+)$', re.IGNORECASE)
+    deleted = []
+    for i in range(doc.Layers.Count - 1, -1, -1):
+        layer = doc.Layers[i]
+        if layer.IsDeleted:
+            continue
+        if not _is_top_level(layer):
+            continue
+        if not pattern.match(layer.Name.strip()):
+            continue
+        try:
+            # Name VOR Delete sichern — sonst liefert layer.Name danach None
+            nm = layer.Name
+            if doc.Layers.Delete(i, True):
+                if nm: deleted.append(nm)
+        except Exception:
+            pass
+    if deleted:
+        print("[EBENEN] Default-Layer entfernt: {}".format(", ".join(deleted)))
+
+
+def set_active_sublayer(doc, zeichnungsebene_id, code):
+    """Macht den Sublayer 'code' unter Zeichnungsebene 'zeichnungsebene_id' aktiv."""
+    parent_idx = _find_top_by_id(doc, zeichnungsebene_id)
+    if parent_idx < 0:
+        print("[EBENEN] Parent-Layer fuer Zeichnungsebene {} nicht gefunden".format(zeichnungsebene_id))
+        return
+    parent_id = doc.Layers[parent_idx].Id
+    sub_idx = _find_sublayer_by_code(doc, parent_id, code)
+    if sub_idx >= 0:
+        doc.Layers.SetCurrentLayerIndex(sub_idx, True)
+    else:
+        print("[EBENEN] Sublayer mit Code {} unter Parent {} nicht gefunden".format(code, doc.Layers[parent_idx].Name))
+
+
+def apply_visibility(doc, zeichnungsebenen, ebenen, active_z_id, active_code, z_mode, e_mode):
+    """
+    Kombinierte Sichtbarkeit aus Z-Mode (Zeichnungsebenen) und E-Mode (Ebenen).
+    Beide Modi: 'all' | 'active' | 'grey' | 'grey_locked'
+    """
+    canonical    = {e["code"]: _color(e.get("color")) for e in ebenen}
+    e_eye_vis    = {e["code"]: e.get("visible", True) for e in ebenen}
+    e_eye_locked = {e["code"]: e.get("locked",  False) for e in ebenen}
+
+    id_to_top, name_to_top, children_by_parent = {}, {}, {}
+    for layer in doc.Layers:
+        if _is_top_level(layer):
+            uid = layer.GetUserString("dossier_id")
+            if uid:
+                id_to_top[uid] = layer
+            name_to_top[layer.Name] = layer
+        else:
+            children_by_parent.setdefault(layer.ParentLayerId, []).append(layer)
+
+    for z in zeichnungsebenen:
+        parent = id_to_top.get(z["id"]) or name_to_top.get(z["name"])
+        if parent is None:
+            continue
+        children       = children_by_parent.get(parent.Id, [])
+        is_active_z    = z["id"] == active_z_id
+        z_visible_flag = z.get("visible", True)
+
+        # Z-Mode -> Parent-Zustand
+        if is_active_z:
+            p_vis, p_grey, p_lock = True, False, False
+        elif z_mode == "active":
+            p_vis, p_grey, p_lock = False, False, False
+        elif not z_visible_flag:
+            p_vis, p_grey, p_lock = False, False, False
+        elif z_mode == "all":
+            p_vis, p_grey, p_lock = True, False, False
+        elif z_mode == "grey_locked":
+            p_vis, p_grey, p_lock = True, True, True
+        else:  # grey
+            p_vis, p_grey, p_lock = True, True, False
+
+        parent_changed = False
+        if parent.IsVisible != p_vis:
+            parent.IsVisible = p_vis
+            parent_changed = True
+        if parent.IsLocked != p_lock:
+            parent.IsLocked = p_lock
+            parent_changed = True
+        if parent_changed:
+            try: doc.Layers.Modify(parent, parent.LayerIndex, True)
+            except Exception: pass
+
+        if not p_vis:
+            continue  # Children erben Parent-Hidden
+
+        # E-Mode -> Sublayer-Zustand
+        for child in children:
+            if "_" not in child.Name:
+                continue
+            code = child.Name.split("_", 1)[0]
+            if code not in canonical:
+                continue
+            is_active_e = (code == active_code)
+            eye_v = e_eye_vis.get(code, True)
+            eye_l = e_eye_locked.get(code, False)
+
+            if is_active_e:
+                e_vis, e_grey, e_lock = True, False, False
+            elif e_mode == "active":
+                e_vis, e_grey, e_lock = False, False, False
+            elif not eye_v:
+                e_vis, e_grey, e_lock = False, False, False
+            elif e_mode == "all":
+                e_vis, e_grey, e_lock = True, False, False
+            elif e_mode == "grey_locked":
+                e_vis, e_grey, e_lock = True, True, True
+            else:  # grey
+                e_vis, e_grey, e_lock = True, True, False
+
+            # Kombination
+            child_vis  = e_vis
+            child_grey = p_grey or e_grey
+            child_lock = e_lock or eye_l
+
+            changed = False
+            if child.IsVisible != child_vis:
+                child.IsVisible = child_vis
+                changed = True
+            if child.IsLocked != child_lock:
+                child.IsLocked = child_lock
+                changed = True
+            if child_grey:
+                if child.Color != GREY:
+                    child.Color = GREY
+                    changed = True
+            else:
+                canon = canonical.get(code)
+                if canon is not None and child.Color != canon:
+                    child.Color = canon
+                    changed = True
+            # In neueren Rhino-Versionen committed der Property-Setter direkt,
+            # in manchen Faellen (besonders auf Mac) wird IsLocked nicht
+            # persistiert ohne explizites Modify. Defensiv:
+            if changed:
+                try:
+                    doc.Layers.Modify(child, child.LayerIndex, True)
+                except Exception:
+                    pass
+
+    doc.Views.Redraw()
diff --git a/rhino/layouts.py b/rhino/layouts.py
new file mode 100644
index 0000000..fe188fd
--- /dev/null
+++ b/rhino/layouts.py
@@ -0,0 +1,748 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+layouts.py
+LAYOUTS-Panel: Layout-Pages erstellen + Details mit Ausschnitten bestuecken.
+Phase 1 — Snapshot-Mode: Ausschnitt wird beim Zuweisen auf das Detail angewendet,
+Re-Sync per Knopf. Live-Link und Masterlayouts kommen spaeter.
+"""
+import os
+import sys
+import json
+import Rhino
+import Rhino.Geometry as rg
+import System
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "4e5d6c7b-8a9f-4e3d-c4b5-a6b7c8d9e0f1"
+
+# UserString-Key auf jedem Detail — speichert die Ausschnitt-Bindung.
+_BIND_KEY = "dossier_bound_ausschnitt"
+# Doc-Strings fuer Layout-Folder-Organisation (analog Ausschnitte-Ordner).
+_FOLDER_LIST_KEY = "dossier_layout_folders"        # JSON-Array: ["A","B",...]
+_FOLDER_MAP_KEY  = "dossier_layout_folder_map"     # JSON-Dict: {pageId: "A"}
+
+# Vordefinierte Papierformate in Millimetern (Welt-Einheit wird beim Erstellen
+# umgerechnet, falls das Doc nicht auf mm steht).
+PAPER_SIZES_MM = {
+    "A0": (841, 1189),
+    "A1": (594, 841),
+    "A2": (420, 594),
+    "A3": (297, 420),
+    "A4": (210, 297),
+    "Letter": (216, 279),
+}
+
+
+def _page_unit_system(doc):
+    """Rhino hat ein eigenes Unit-System fuer Layouts (PageUnitSystem), das
+    sich vom Modell-Unit-System unterscheiden kann (z.B. Modell in Meter,
+    Plan in Millimeter — Standard bei Architektur). AddPageView und
+    SetPageSize erwarten Werte in PageUnitSystem, NICHT in ModelUnitSystem."""
+    try:
+        return doc.PageUnitSystem
+    except Exception:
+        return doc.ModelUnitSystem
+
+
+def _mm_to_page(doc):
+    """Faktor: mm -> Page-Unit. Wird fuer AddPageView/SetPageSize benutzt."""
+    try:
+        return Rhino.RhinoMath.UnitScale(Rhino.UnitSystem.Millimeters,
+                                         _page_unit_system(doc))
+    except Exception:
+        return 1.0
+
+
+def _page_to_mm(doc):
+    """Faktor: Page-Unit -> mm. Wird beim PDF-Export gebraucht."""
+    try:
+        return Rhino.RhinoMath.UnitScale(_page_unit_system(doc),
+                                         Rhino.UnitSystem.Millimeters)
+    except Exception:
+        return 1.0
+
+
+def _page_size_in_doc(doc, fmt, landscape):
+    """Liefert (width, height) in Page-Units."""
+    if fmt not in PAPER_SIZES_MM: return None
+    w_mm, h_mm = PAPER_SIZES_MM[fmt]
+    if landscape:
+        w_mm, h_mm = h_mm, w_mm
+    f = _mm_to_page(doc)
+    return (w_mm * f, h_mm * f)
+
+
+def _load_folder_list(doc):
+    """Liefert die Liste explizit angelegter Ordner (Reihenfolge bleibt)."""
+    raw = doc.Strings.GetValue(_FOLDER_LIST_KEY)
+    if not raw: return []
+    try:
+        data = json.loads(raw)
+        return [n for n in data if isinstance(n, str) and n]
+    except Exception:
+        return []
+
+
+def _save_folder_list(doc, names):
+    try:
+        doc.Strings.SetString(_FOLDER_LIST_KEY, json.dumps(list(names), ensure_ascii=False))
+    except Exception as ex:
+        print("[LAYOUTS] _save_folder_list:", ex)
+
+
+def _load_folder_map(doc):
+    """page_id -> folder_name."""
+    raw = doc.Strings.GetValue(_FOLDER_MAP_KEY)
+    if not raw: return {}
+    try:
+        data = json.loads(raw)
+        if isinstance(data, dict):
+            return {k: v for k, v in data.items() if isinstance(v, str) and v}
+    except Exception:
+        pass
+    return {}
+
+
+def _save_folder_map(doc, m):
+    try:
+        doc.Strings.SetString(_FOLDER_MAP_KEY, json.dumps(m, ensure_ascii=False))
+    except Exception as ex:
+        print("[LAYOUTS] _save_folder_map:", ex)
+
+
+def _list_layouts(doc):
+    """Liefert dict-Liste aller PageView-Layouts inkl. Ordner-Zuweisung.
+    Groessen werden ZUSAETZLICH in mm geliefert, damit das Frontend ohne
+    Unit-Kenntnis formatieren kann."""
+    fmap = _load_folder_map(doc)
+    pu_to_mm = _page_to_mm(doc)
+    out = []
+    for v in doc.Views:
+        if isinstance(v, Rhino.Display.RhinoPageView):
+            try:
+                pid = str(v.MainViewport.Id)
+                w = float(v.PageWidth)
+                h = float(v.PageHeight)
+                out.append({
+                    "id":          pid,
+                    "name":        v.PageName or "",
+                    "width":       w,
+                    "height":      h,
+                    "widthMm":     w * pu_to_mm,
+                    "heightMm":    h * pu_to_mm,
+                    "detailCount": len(v.GetDetailViews() or []),
+                    "folder":      fmap.get(pid, ""),
+                })
+            except Exception as ex:
+                print("[LAYOUTS] list_layouts:", ex)
+    return out
+
+
+def _find_page_by_id(doc, page_id):
+    """page_id ist die MainViewport.Id (str). Liefert RhinoPageView oder None."""
+    for v in doc.Views:
+        if isinstance(v, Rhino.Display.RhinoPageView):
+            try:
+                if str(v.MainViewport.Id) == page_id:
+                    return v
+            except Exception:
+                pass
+    return None
+
+
+def _find_detail_by_id(doc, page, detail_id):
+    """Detail-Object auf einer Page anhand seiner Detail-ID."""
+    try:
+        for d in page.GetDetailViews():
+            if str(d.Id) == detail_id:
+                return d
+    except Exception as ex:
+        print("[LAYOUTS] find_detail:", ex)
+    return None
+
+
+def _get_detail_binding(detail):
+    """Liest gebundene Ausschnitt-ID aus dem Detail-UserString."""
+    try:
+        v = detail.Attributes.GetUserString(_BIND_KEY)
+        return v if v else None
+    except Exception:
+        return None
+
+
+def _set_detail_binding(detail, snap_id):
+    """Schreibt/loescht die Ausschnitt-ID auf das Detail-UserString."""
+    try:
+        if snap_id:
+            detail.Attributes.SetUserString(_BIND_KEY, snap_id)
+        else:
+            detail.Attributes.SetUserString(_BIND_KEY, "")  # leerer String = "kein Binding"
+        detail.CommitChanges()
+        return True
+    except Exception as ex:
+        print("[LAYOUTS] set_binding:", ex)
+        return False
+
+
+def _detail_dict(detail, snap_lookup):
+    """Serialisiert ein Detail fuer das Frontend."""
+    bbox = detail.Geometry.GetBoundingBox(True)  # in Welt-Koordinaten der Page
+    bound_id   = _get_detail_binding(detail)
+    bound_name = (snap_lookup.get(bound_id, {}) or {}).get("name") if bound_id else None
+    try:
+        vp_name = detail.Viewport.Name
+    except Exception:
+        vp_name = ""
+    return {
+        "id":            str(detail.Id),
+        "name":          vp_name,
+        "x":             float(bbox.Min.X),
+        "y":             float(bbox.Min.Y),
+        "width":         float(bbox.Max.X - bbox.Min.X),
+        "height":        float(bbox.Max.Y - bbox.Min.Y),
+        "boundAusschnitt":     bound_id,
+        "boundAusschnittName": bound_name,
+    }
+
+
+def _snap_lookup(doc):
+    """Map snap_id -> snap dict. Wird fuer Detail-Display gebraucht."""
+    out = {}
+    try:
+        raw = doc.Strings.GetValue("dossier_ausschnitte")
+        if raw:
+            data = json.loads(raw)
+            if isinstance(data, list):
+                for s in data:
+                    if isinstance(s, dict) and s.get("id"):
+                        out[s["id"]] = s
+    except Exception:
+        pass
+    return out
+
+
+def _slim_snaps(doc):
+    """Schlanke Liste von Snapshots fuer Frontend-Dropdown."""
+    out = []
+    try:
+        raw = doc.Strings.GetValue("dossier_ausschnitte")
+        if not raw: return []
+        data = json.loads(raw)
+        if not isinstance(data, list): return []
+        for s in data:
+            if isinstance(s, dict) and s.get("id"):
+                out.append({
+                    "id":     s.get("id"),
+                    "name":   s.get("name"),
+                    "folder": s.get("folder", ""),
+                    "scale":  s.get("scale", ""),
+                })
+    except Exception:
+        pass
+    return out
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class LayoutsBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "layouts")
+
+    def _on_ready(self):
+        self._send_state()
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+
+        if   t == "READY":               self._on_ready()
+        elif t == "LIST":                self._send_state()
+        elif t == "NEW_LAYOUT":          self._new_layout(p)
+        elif t == "DELETE_LAYOUT":       self._delete_layout(p.get("id"))
+        elif t == "RENAME_LAYOUT":       self._rename_layout(p.get("id"), p.get("name"))
+        elif t == "SET_PAGE_SIZE":       self._set_page_size(p)
+        elif t == "ACTIVATE_LAYOUT":     self._activate_layout(p.get("id"))
+        elif t == "EXPORT_PDF":          self._export_pdf(p)
+        elif t == "ADD_DETAIL":          self._add_detail(p)
+        elif t == "DELETE_DETAIL":       self._delete_detail(p.get("pageId"), p.get("detailId"))
+        elif t == "BIND_AUSSCHNITT":     self._bind_ausschnitt(p)
+        elif t == "SYNC_DETAIL":         self._sync_detail(p.get("pageId"), p.get("detailId"))
+        elif t == "SYNC_LAYOUT":         self._sync_layout(p.get("id"))
+        # Ordner-Management
+        elif t == "ADD_FOLDER":          self._add_folder(p.get("name"))
+        elif t == "REMOVE_FOLDER":       self._remove_folder(p.get("name"))
+        elif t == "SET_FOLDER":          self._set_folder(p.get("id"), p.get("folder") or "")
+
+    # --- State-Snapshot -----------------------------------------------------
+
+    def _send_state(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None:
+            self.send("STATE", {"layouts": [], "snapshots": [], "details": {}, "folders": []})
+            return
+        layouts = _list_layouts(doc)
+        snaps = _slim_snaps(doc)
+        snap_lookup = _snap_lookup(doc)
+        # Ordner: explizite Liste + alle in Layouts referenzierten
+        explicit_folders = _load_folder_list(doc)
+        for l in layouts:
+            f = l.get("folder")
+            if f and f not in explicit_folders:
+                explicit_folders.append(f)
+        # Pro Layout die Details mitgeben
+        details = {}
+        for v in doc.Views:
+            if isinstance(v, Rhino.Display.RhinoPageView):
+                try:
+                    pid = str(v.MainViewport.Id)
+                    details[pid] = [_detail_dict(d, snap_lookup) for d in v.GetDetailViews()]
+                except Exception as ex:
+                    print("[LAYOUTS] details for page:", ex)
+        self.send("STATE", {
+            "layouts":   layouts,
+            "snapshots": snaps,
+            "details":   details,
+            "folders":   explicit_folders,
+        })
+
+    # --- Ordner -------------------------------------------------------------
+
+    def _add_folder(self, name):
+        if not name: return
+        name = name.strip()
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        folders = _load_folder_list(doc)
+        if name not in folders:
+            folders.append(name)
+            _save_folder_list(doc, folders)
+        self._send_state()
+
+    def _remove_folder(self, name):
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        folders = [f for f in _load_folder_list(doc) if f != name]
+        _save_folder_list(doc, folders)
+        # Layouts aus diesem Ordner herausnehmen (zurueck auf Root)
+        m = _load_folder_map(doc)
+        m = {k: v for k, v in m.items() if v != name}
+        _save_folder_map(doc, m)
+        self._send_state()
+
+    def _set_folder(self, page_id, folder):
+        if not page_id: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        m = _load_folder_map(doc)
+        if folder:
+            m[page_id] = folder
+            # Sicherstellen dass der Ordner-Name in der expliziten Liste ist
+            folders = _load_folder_list(doc)
+            if folder not in folders:
+                folders.append(folder)
+                _save_folder_list(doc, folders)
+        else:
+            if page_id in m: del m[page_id]
+        _save_folder_map(doc, m)
+        self._send_state()
+
+    # --- Layouts ------------------------------------------------------------
+
+    def _resolve_size(self, doc, p):
+        """Bestimmt (w, h) in Page-Units aus Payload — Format-Name ODER
+        customWidth/customHeight in mm."""
+        fmt = p.get("format")
+        if fmt == "custom":
+            try:
+                wmm = float(p.get("customWidth"))
+                hmm = float(p.get("customHeight"))
+            except Exception:
+                return None
+            if wmm <= 0 or hmm <= 0: return None
+            f = _mm_to_page(doc)
+            return (wmm * f, hmm * f)
+        if fmt in PAPER_SIZES_MM:
+            return _page_size_in_doc(doc, fmt, bool(p.get("landscape", True)))
+        return None
+
+    def _new_layout(self, p):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        name = (p.get("name") or "").strip()
+        size = self._resolve_size(doc, p)
+        if size is None:
+            print("[LAYOUTS] ungueltige Groesse:", p); return
+        w, h = size
+        if not name:
+            name = "Layout {}".format(len(_list_layouts(doc)) + 1)
+        try:
+            page = doc.Views.AddPageView(name, w, h)
+            if page is None:
+                print("[LAYOUTS] AddPageView fehlgeschlagen"); return
+            print("[LAYOUTS] '{}' angelegt ({}x{})".format(name, w, h))
+        except Exception as ex:
+            print("[LAYOUTS] AddPageView Fehler:", ex)
+        self._send_state()
+
+    def _set_page_size(self, p):
+        """Aendert die Groesse einer bestehenden Layout-Seite via
+        RhinoPageView.SetPageSize (Rhino 8). Faellt zurueck auf Property-
+        Setter, falls die Methode nicht existiert."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, p.get("id"))
+        if page is None: return
+        size = self._resolve_size(doc, p)
+        if size is None:
+            print("[LAYOUTS] ungueltige Groesse fuer set_page_size:", p); return
+        w, h = size
+        done = False
+        # 1) SetPageSize(double, double) — Rhino 8
+        if hasattr(page, "SetPageSize"):
+            try:
+                page.SetPageSize(float(w), float(h))
+                done = True
+                print("[LAYOUTS] SetPageSize -> {}x{}".format(w, h))
+            except Exception as ex:
+                print("[LAYOUTS] SetPageSize fehlgeschlagen:", ex)
+        # 2) Fallback: Properties (haengt von Rhino-Version ab)
+        if not done:
+            try:
+                page.PageWidth  = float(w)
+                page.PageHeight = float(h)
+                done = True
+                print("[LAYOUTS] PageWidth/Height-Properties -> {}x{}".format(w, h))
+            except Exception as ex:
+                print("[LAYOUTS] Property-Setter fehlgeschlagen:", ex)
+        if not done:
+            print("[LAYOUTS] Konnte Seiten-Groesse nicht setzen — bitte ueber Rhinos Layout-Dialog aendern")
+        try: page.Redraw()
+        except Exception: pass
+        self._send_state()
+
+    def _export_pdf(self, p):
+        """Exportiert Layouts als ein gemeinsames PDF. Akzeptiert:
+           - "ids": Liste von Layout-IDs (Multi-Export)
+           - "id":  einzelne Layout-ID
+           - sonst alle Layouts.
+        Save-Dialog via Eto.Forms, Inhalt via FilePdf API mit
+        EXPLIZITER Pixel-Groesse aus Page-Dimensionen (sonst wird's ein
+        Mini-Bildchen)."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None: return
+        ids = p.get("ids")
+        if not ids and p.get("id"): ids = [p.get("id")]
+        dpi = float(p.get("dpi") or 300)
+        targets = []
+        if ids:
+            for pid in ids:
+                page = _find_page_by_id(doc, pid)
+                if page is not None: targets.append(page)
+        else:
+            for v in doc.Views:
+                if isinstance(v, Rhino.Display.RhinoPageView):
+                    targets.append(v)
+        if not targets:
+            print("[LAYOUTS] kein Layout zu exportieren"); return
+        path = self._pick_save_path(doc, targets)
+        if not path:
+            print("[LAYOUTS] Export abgebrochen")
+            return
+        # PageWidth/PageHeight sind in Page-Units — fuer die Pixel-Berechnung
+        # rechnen wir in mm um (1 inch = 25.4 mm).
+        mm_per_pu = _page_to_mm(doc)
+        # Remember current active view to restore afterwards
+        prev_view = None
+        try: prev_view = doc.Views.ActiveView
+        except Exception: pass
+        try:
+            pdf = Rhino.FileIO.FilePdf.Create()
+            n_added = 0
+            for page in targets:
+                try:
+                    # Page muss kurz aktiv sein — sonst rendert ViewCapture
+                    # leer (vor allem auf macOS). Kurzer Idle-Wait gibt dem
+                    # Renderer Zeit, sonst kommt's beim ERSTEN Page-Wechsel
+                    # zu Race-Bedingungen.
+                    try:
+                        page.SetPageAsActive()
+                        doc.Views.ActiveView = page
+                        page.Redraw()
+                        doc.Views.Redraw()
+                        Rhino.RhinoApp.Wait()  # einen Idle-Tick verarbeiten
+                    except Exception: pass
+                    # Page-Size in mm -> Pixel @dpi
+                    w_mm = float(page.PageWidth)  * mm_per_pu
+                    h_mm = float(page.PageHeight) * mm_per_pu
+                    if w_mm <= 0 or h_mm <= 0:
+                        print("[LAYOUTS] Page '{}' hat ungueltige Groesse: {}x{} mm".format(
+                            page.PageName, w_mm, h_mm))
+                        continue
+                    px_w = max(1, int(round(w_mm / 25.4 * dpi)))
+                    px_h = max(1, int(round(h_mm / 25.4 * dpi)))
+                    # Settings mit expliziter Groesse — die Drei-Argument-
+                    # Variante ist die zuverlaessige fuer PDF-Export.
+                    settings = None
+                    try:
+                        size = System.Drawing.Size(px_w, px_h)
+                        settings = Rhino.Display.ViewCaptureSettings(page, size, dpi)
+                    except Exception as ex:
+                        print("[LAYOUTS] 3-arg Settings:", ex)
+                    if settings is None:
+                        settings = Rhino.Display.ViewCaptureSettings(page, dpi)
+                    # Vector-Output — sonst wird's gerastert und klein
+                    try: settings.RasterMode = False
+                    except Exception: pass
+                    pdf.AddPage(settings)
+                    n_added += 1
+                    print("[LAYOUTS] add page '{}': {}x{}mm -> {}x{}px".format(
+                        page.PageName, w_mm, h_mm, px_w, px_h))
+                except Exception as ex:
+                    print("[LAYOUTS] add_page '{}': {}".format(page.PageName, ex))
+            if n_added == 0:
+                print("[LAYOUTS] Keine Seiten konnten hinzugefuegt werden")
+            else:
+                pdf.Write(path)
+                print("[LAYOUTS] PDF geschrieben: {} ({} Seite(n))".format(path, n_added))
+        except Exception as ex:
+            print("[LAYOUTS] PDF-Export fehlgeschlagen:", ex)
+        finally:
+            # Vorherige View wieder aktivieren
+            if prev_view is not None:
+                try: doc.Views.ActiveView = prev_view
+                except Exception: pass
+
+    def _pick_save_path(self, doc, targets):
+        """Eto.Forms SaveFileDialog — Default: Doc-Folder + erster Layout-Name."""
+        try:
+            import Eto.Forms as forms
+            dlg = forms.SaveFileDialog()
+            dlg.Filters.Add(forms.FileFilter("PDF", ".pdf"))
+            try: dlg.CurrentFilterIndex = 0
+            except Exception: pass
+            # Default-Filename — Layout-Name oder Doc-Name
+            if len(targets) == 1:
+                base = targets[0].PageName or "Layout"
+            else:
+                base = "Layouts"
+                if doc.Path:
+                    base = os.path.splitext(os.path.basename(doc.Path))[0] + "_Layouts"
+            dlg.FileName = "{}.pdf".format(base)
+            # Default-Folder — neben der .3dm wenn vorhanden
+            if doc.Path:
+                try: dlg.Directory = System.Uri(os.path.dirname(doc.Path))
+                except Exception: pass
+            try:
+                import Rhino.UI as RhinoUI
+                parent = RhinoUI.RhinoEtoApp.MainWindow
+            except Exception:
+                parent = None
+            result = dlg.ShowDialog(parent)
+            if str(result) != "Ok":
+                return None
+            path = dlg.FileName
+            if path and not path.lower().endswith(".pdf"):
+                path += ".pdf"
+            return path
+        except Exception as ex:
+            print("[LAYOUTS] SaveFileDialog:", ex)
+            return None
+
+    def _delete_layout(self, page_id):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, page_id)
+        if page is None:
+            print("[LAYOUTS] delete: page not found", page_id); return
+        name = page.PageName
+        # Andere View aktivieren — Rhino verweigert oft, die aktive Page zu loeschen
+        try:
+            for v in doc.Views:
+                if v is not page and not isinstance(v, Rhino.Display.RhinoPageView):
+                    doc.Views.ActiveView = v
+                    break
+            else:
+                # Nur PageViews da — irgendeine andere aktivieren
+                for v in doc.Views:
+                    if v is not page:
+                        doc.Views.ActiveView = v
+                        break
+        except Exception as ex:
+            print("[LAYOUTS] activate other view:", ex)
+        done = False
+        # Methode 1: doc.Views.Remove
+        try:
+            r = doc.Views.Remove(page)
+            print("[LAYOUTS] doc.Views.Remove returned:", r)
+            # Verify
+            if _find_page_by_id(doc, page_id) is None:
+                done = True
+        except Exception as ex:
+            print("[LAYOUTS] doc.Views.Remove failed:", ex)
+        # Methode 2: Close + Delete via RunScript-Fallback
+        if not done:
+            try:
+                Rhino.RhinoApp.RunScript('_-CommandHistory _Hide _Enter', False)
+            except Exception: pass
+            try:
+                # Rhino 8 hat _-Layout _Delete <name>
+                Rhino.RhinoApp.RunScript('_-Layout _Delete "{}" _Enter'.format(name), False)
+                if _find_page_by_id(doc, page_id) is None:
+                    done = True
+                    print("[LAYOUTS] geloescht via _-Layout _Delete")
+            except Exception as ex:
+                print("[LAYOUTS] _-Layout _Delete failed:", ex)
+        if not done:
+            print("[LAYOUTS] Konnte Layout '{}' nicht loeschen — bitte manuell ueber Layout-Tab".format(name))
+        # Folder-Mapping aufraeumen
+        try:
+            m = _load_folder_map(doc)
+            if page_id in m:
+                del m[page_id]
+                _save_folder_map(doc, m)
+        except Exception: pass
+        self._send_state()
+
+    def _rename_layout(self, page_id, name):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, page_id)
+        if page is None or not name: return
+        try:
+            page.PageName = name.strip()
+        except Exception as ex:
+            print("[LAYOUTS] Rename page:", ex)
+        self._send_state()
+
+    def _activate_layout(self, page_id):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, page_id)
+        if page is None: return
+        try:
+            page.SetPageAsActive()
+            doc.Views.ActiveView = page
+        except Exception as ex:
+            print("[LAYOUTS] activate page:", ex)
+
+    # --- Details ------------------------------------------------------------
+
+    def _add_detail(self, p):
+        """Neues Detail auf einer Seite anlegen. Optional gleich an einen
+        Ausschnitt binden (= Snapshot anwenden)."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, p.get("pageId"))
+        if page is None: return
+        # Bounding-Box auf der Seite: default 80% der Seitenflaeche, zentriert
+        try:
+            pw = page.PageWidth
+            ph = page.PageHeight
+            margin_x = pw * 0.1
+            margin_y = ph * 0.1
+            c0 = rg.Point2d(margin_x, margin_y)
+            c1 = rg.Point2d(pw - margin_x, ph - margin_y)
+            # Erlaubt Override per Payload
+            for k_min, default in (("x", margin_x), ("y", margin_y)):
+                v = p.get(k_min)
+                if isinstance(v, (int, float)):
+                    if k_min == "x": c0 = rg.Point2d(float(v), c0.Y)
+                    if k_min == "y": c0 = rg.Point2d(c0.X, float(v))
+            for k_max, default in (("x2", pw - margin_x), ("y2", ph - margin_y)):
+                v = p.get(k_max)
+                if isinstance(v, (int, float)):
+                    if k_max == "x2": c1 = rg.Point2d(float(v), c1.Y)
+                    if k_max == "y2": c1 = rg.Point2d(c1.X, float(v))
+            proj = Rhino.Display.DefinedViewportProjection.Top
+            detail = page.AddDetailView("Detail", c0, c1, proj)
+            if detail is None:
+                print("[LAYOUTS] AddDetailView gab None"); return
+            page.Redraw()
+            # Optional Ausschnitt binden + anwenden
+            snap_id = p.get("ausschnittId")
+            if snap_id:
+                _set_detail_binding(detail, snap_id)
+                try:
+                    import ausschnitte
+                    ausschnitte.apply_snapshot_to_detail(doc, detail, snap_id)
+                except Exception as ex:
+                    print("[LAYOUTS] initial apply:", ex)
+        except Exception as ex:
+            print("[LAYOUTS] AddDetailView:", ex)
+        self._send_state()
+
+    def _delete_detail(self, page_id, detail_id):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, page_id)
+        if page is None: return
+        detail = _find_detail_by_id(doc, page, detail_id)
+        if detail is None: return
+        try:
+            doc.Objects.Delete(detail.Id, True)
+            page.Redraw()
+        except Exception as ex:
+            print("[LAYOUTS] Delete detail:", ex)
+        self._send_state()
+
+    def _bind_ausschnitt(self, p):
+        """Setzt die Binding und wendet den Ausschnitt sofort an (Snapshot-Mode)."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, p.get("pageId"))
+        if page is None: return
+        detail = _find_detail_by_id(doc, page, p.get("detailId"))
+        if detail is None: return
+        snap_id = p.get("ausschnittId") or None
+        _set_detail_binding(detail, snap_id)
+        if snap_id:
+            try:
+                import ausschnitte
+                ausschnitte.apply_snapshot_to_detail(doc, detail, snap_id)
+            except Exception as ex:
+                print("[LAYOUTS] apply on bind:", ex)
+        self._send_state()
+
+    def _sync_detail(self, page_id, detail_id):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, page_id)
+        if page is None: return
+        detail = _find_detail_by_id(doc, page, detail_id)
+        if detail is None: return
+        snap_id = _get_detail_binding(detail)
+        if not snap_id:
+            print("[LAYOUTS] sync: kein Binding auf diesem Detail")
+            return
+        try:
+            import ausschnitte
+            ausschnitte.apply_snapshot_to_detail(doc, detail, snap_id)
+        except Exception as ex:
+            print("[LAYOUTS] sync:", ex)
+        self._send_state()
+
+    def _sync_layout(self, page_id):
+        """Alle Details der Page mit ihren Bindings re-applien."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        page = _find_page_by_id(doc, page_id)
+        if page is None: return
+        try:
+            import ausschnitte
+            for d in page.GetDetailViews():
+                snap_id = _get_detail_binding(d)
+                if snap_id:
+                    ausschnitte.apply_snapshot_to_detail(doc, d, snap_id)
+            page.Redraw()
+        except Exception as ex:
+            print("[LAYOUTS] sync layout:", ex)
+        self._send_state()
+
+
+def _bridge_factory():
+    b = LayoutsBridge()
+    sc.sticky["layouts_bridge"] = b
+    return b
+
+
+panel_base.register_and_open("layouts", "LAYOUTS", PANEL_GUID_STR,
+                             _bridge_factory, icon_spec=("L", "#7a5fa8"))
diff --git a/rhino/massstab.py b/rhino/massstab.py
new file mode 100644
index 0000000..7bbf1fc
--- /dev/null
+++ b/rhino/massstab.py
@@ -0,0 +1,1096 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+massstab.py
+MASSSTAB-Panel: zeigt + setzt den aktuellen Massstab des aktiven Viewports.
+Funktioniert nur in Parallelprojektion. In Perspective wird "—" gemeldet.
+
+Maesstabs-Mathematik:
+  frustum_width_in_doc_units = vp.GetFrustum() -> (right - left)
+  frustum_width_mm = frustum_width_in_doc_units * mm_per_doc_unit
+  screen_width_mm  = pixel_width * 25.4 / dpi
+  N = frustum_width_mm / screen_width_mm   (Skala 1:N)
+
+DPI kann pro Doc kalibriert werden (Default 96), gespeichert in doc.Strings.
+"""
+import os
+import sys
+import math
+import json
+import Rhino
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "5c8e4f3f-6d0e-4f1a-a3d4-e5f607182941"
+
+# DPI ist eine Hardware-Eigenschaft (Bildschirm) — NICHT pro Dokument speichern.
+# Wir legen sie in einer Config-Datei im Home des Users ab.
+_DOC_DPI_KEY   = "dossier_dpi"   # Legacy, fuer Migration
+
+# Pro Viewport-Name der zuletzt vom User explizit gesetzte Massstab
+# (Dropdown/Input/100%-Button/Ausschnitt-Restore). NICHT der Live-Zoom — der
+# drifted bei Pan/Zoom. Wird von Ausschnitten beim Speichern als "der
+# eingestellte Massstab" gelesen. Per-doc persistiert in doc.Strings als
+# JSON-Dict, damit ein Wechsel zurueck auf einen frueher gesetzten Viewport
+# den korrekten Wert wieder rausgibt — auch nach Restart.
+_user_set_scales = {}  # {viewport_name: float}
+_user_set_scales_loaded = False  # lazy load aus doc.Strings beim ersten Zugriff
+_DOC_USER_SCALES_KEY = "dossier_user_scales"  # JSON-Dict {vp_name: ratio}
+_DOC_USER_SCALE_KEY  = "dossier_user_scale"   # Legacy: globaler letzter Wert,
+                                              # wird fuer Plotweight/Hatch-Rescale
+                                              # weiter doc-weit genutzt.
+_CONFIG_DIR    = os.path.expanduser("~/Library/Application Support/RhinoPanel")
+_CONFIG_PATH   = os.path.join(_CONFIG_DIR, "config.json")
+_DEFAULT_DPI   = 96.0
+
+# Mac WKWebView verschluckt schnelle ExecuteScript-Bursts -> wir limitieren
+# das Live-Update auf alle N Idle-Ticks (~5-10/s).
+_IDLE_THROTTLE = 6
+
+
+def _mm_per_doc_unit(doc):
+    """Faktor: doc-Einheit -> Millimeter."""
+    us = doc.ModelUnitSystem
+    UnitSystem = Rhino.UnitSystem
+    if us == UnitSystem.Millimeters: return 1.0
+    if us == UnitSystem.Centimeters: return 10.0
+    if us == UnitSystem.Meters:      return 1000.0
+    if us == UnitSystem.Kilometers:  return 1000000.0
+    if us == UnitSystem.Inches:      return 25.4
+    if us == UnitSystem.Feet:        return 304.8
+    if us == UnitSystem.Yards:       return 914.4
+    if us == UnitSystem.Miles:       return 1609344.0
+    # Fallback ueber Rhinos UnitScale
+    try:
+        return Rhino.RhinoMath.UnitScale(us, UnitSystem.Millimeters)
+    except Exception:
+        return 1.0
+
+
+_DETECT_JXA = (
+    'ObjC.import("CoreGraphics");'
+    'var id=$.CGMainDisplayID();'
+    'var sz=$.CGDisplayScreenSize(id);'
+    'var m=$.CGDisplayCopyDisplayMode(id);'
+    'JSON.stringify({mm:sz.width,mh:sz.height,'
+    'px:$.CGDisplayModeGetPixelWidth(m),'      # echte/physische Pixel
+    'py:$.CGDisplayModeGetPixelHeight(m),'
+    'lpx:$.CGDisplayPixelsWide(id),'           # logische Pixel (zum Vergleich)
+    'lpy:$.CGDisplayPixelsHigh(id)});'
+)
+
+
+
+def _detect_dpi():
+    """Automatische DPI-Erkennung auf macOS via CoreGraphics.
+
+    Ruft `osascript -l JavaScript` mit einem CoreGraphics-Snippet auf:
+      CGDisplayScreenSize(mainDisplay) -> physische Groesse in mm
+      CGDisplayPixelsWide              -> logische Aufloesung in px
+
+    DPI = px * 25.4 / mm. Funktioniert auf Intel- und Apple-Silicon-Macs
+    und passt sich automatisch an macOS-Scaling-Aenderungen an.
+
+    Implementiert ueber System.Diagnostics.Process (IronPython auf .NET
+    unterstuetzt kein `subprocess.check_output`).
+    """
+    try:
+        from System.Diagnostics import Process, ProcessStartInfo
+    except Exception as ex:
+        print("[MASSSTAB] auto-detect: .NET Process nicht verfuegbar:", ex)
+        return None
+    if not os.path.isfile("/usr/bin/osascript"):
+        # Vermutlich nicht macOS -> nichts zu detecten
+        return None
+    # JXA-Snippet in eine temp-Datei schreiben, damit wir uns das
+    # Shell-Quoting fuer Argumente sparen koennen.
+    script_path = None
+    try:
+        import tempfile
+        fd, script_path = tempfile.mkstemp(suffix=".js", prefix="rhinopanel_dpi_")
+        try:
+            os.write(fd, _DETECT_JXA.encode("utf-8"))
+        finally:
+            os.close(fd)
+        psi = ProcessStartInfo()
+        psi.FileName  = "/usr/bin/osascript"
+        psi.Arguments = '-l JavaScript "' + script_path + '"'
+        psi.RedirectStandardOutput = True
+        psi.RedirectStandardError  = True
+        psi.UseShellExecute = False
+        psi.CreateNoWindow  = True
+        p = Process.Start(psi)
+        out = p.StandardOutput.ReadToEnd()
+        err = p.StandardError.ReadToEnd()
+        # Timeout-Schutz: maximal 2s warten
+        try:
+            finished = p.WaitForExit(2000)
+        except Exception:
+            finished = True
+        if not finished:
+            try: p.Kill()
+            except Exception: pass
+            print("[MASSSTAB] auto-detect: osascript timeout")
+            return None
+        if p.ExitCode != 0:
+            print("[MASSSTAB] auto-detect osascript ExitCode={}:".format(p.ExitCode), err)
+            return None
+        import json as _json
+        data = _json.loads((out or "").strip())
+        mm  = float(data.get("mm")  or 0)
+        # Rhinos vp.Size auf Mac liefert PHYSISCHE Pixel (Retina-Backing),
+        # daher physische Pixelzahl fuer die DPI verwenden — sonst sind
+        # die Modelle nach Skala-Anwendung halb so gross.
+        px  = float(data.get("px")  or 0)
+        lpx = float(data.get("lpx") or 0)
+        if mm <= 0 or px <= 0:
+            return None
+        dpi = px * 25.4 / mm
+        if dpi < 30.0 or dpi > 600.0:
+            print("[MASSSTAB] auto-detect: DPI {:.1f} ausserhalb 30..600 -> ignoriert".format(dpi))
+            return None
+        print("[MASSSTAB] DPI auto-detected: {:.1f} physisch (Bildschirm {:.0f}x{:.0f}px / {:.1f}x{:.1f}mm, logisch {:.0f}x{:.0f})".format(
+            dpi, px, float(data.get("py") or 0),
+            mm, float(data.get("mh") or 0),
+            lpx, float(data.get("lpy") or 0)))
+        return dpi
+    except Exception as ex:
+        print("[MASSSTAB] auto-detect fehlgeschlagen:", ex)
+        return None
+    finally:
+        if script_path:
+            try: os.remove(script_path)
+            except Exception: pass
+
+
+_config_cache = None  # in-memory Cache fuer die Config-Datei (DPI etc.)
+
+
+def _read_config():
+    """Liest die Config-Datei nur einmal, danach aus Memory-Cache.
+    Wird via _compute_scale/_get_dpi sehr haeufig (jeden Idle-Tick) aufgerufen
+    -> File-IO darf nicht jeden Tick passieren."""
+    global _config_cache
+    if _config_cache is not None:
+        return _config_cache
+    cfg = {}
+    try:
+        if os.path.isfile(_CONFIG_PATH):
+            with open(_CONFIG_PATH, "rb") as f:
+                data = json.loads(f.read().decode("utf-8"))
+                if isinstance(data, dict):
+                    cfg = data
+    except Exception as ex:
+        print("[MASSSTAB] config lesen:", ex)
+    _config_cache = cfg
+    return cfg
+
+
+def _write_config(cfg):
+    """Schreibt + invalidiert den Cache."""
+    global _config_cache
+    try:
+        if not os.path.isdir(_CONFIG_DIR):
+            os.makedirs(_CONFIG_DIR)
+        with open(_CONFIG_PATH, "wb") as f:
+            f.write(json.dumps(cfg, ensure_ascii=False, indent=2).encode("utf-8"))
+        _config_cache = cfg  # Cache mit dem geschriebenen Stand aktualisieren
+        return True
+    except Exception as ex:
+        print("[MASSSTAB] config schreiben:", ex)
+        return False
+
+
+def _get_dpi(doc):
+    """Liefert den aktuell gueltigen DPI-Wert aus der Config. Loest KEINEN
+    Subprocess aus — Auto-Detection passiert nur explizit (bei READY,
+    Button-Klick oder via _force_redetect_dpi)."""
+    cfg = _read_config()
+    # Legacy-Migration: alter doc.Strings Wert -> einmalig in Config
+    if doc is not None and "dpi" not in cfg:
+        try:
+            legacy = doc.Strings.GetValue(_DOC_DPI_KEY)
+            if legacy:
+                v = float(legacy)
+                if 30.0 <= v <= 600.0:
+                    cfg["dpi"]        = v
+                    cfg["dpi_source"] = "manual"
+                    _write_config(cfg)
+                    return v
+        except Exception:
+            pass
+    try:
+        v = float(cfg.get("dpi"))
+        if 30.0 <= v <= 600.0:
+            return v
+    except Exception:
+        pass
+    return _DEFAULT_DPI
+
+
+def _bootstrap_dpi():
+    """Beim Panel-Start einmal aufgerufen. Verhalten:
+      - Keine Config:        detected + speichert
+      - Source 'manual':     unangetastet (User hat bewusst gewaehlt)
+      - Source 'auto'/sonst: detected, ueberschreibt
+        (so faengt eine neue Detection-Logik auch alte Werte ein und der
+         User reagiert auf Display-Scaling-Wechsel automatisch)
+    Subprocess laeuft hier nur einmal pro Panel-Open."""
+    cfg = _read_config()
+    if cfg.get("dpi_source") == "manual":
+        return  # User-Override respektieren
+    auto = _detect_dpi()
+    if auto is None:
+        return
+    cfg["dpi"]        = auto
+    cfg["dpi_source"] = "auto"
+    _write_config(cfg)
+
+
+def _set_dpi(doc, value, source="manual"):
+    try:
+        v = float(value)
+    except Exception:
+        return False
+    if not (30.0 <= v <= 600.0):
+        return False
+    cfg = _read_config()
+    cfg["dpi"]        = v
+    cfg["dpi_source"] = source
+    if not _write_config(cfg):
+        return False
+    print("[MASSSTAB] DPI={:.1f} ({}) -> {}".format(v, source, _CONFIG_PATH))
+    return True
+
+
+def _force_redetect_dpi():
+    """Manueller "Auto-Detect"-Trigger via Button. Ueberschreibt auch
+    einen manuellen Override. Liefert den neuen Wert oder None."""
+    auto = _detect_dpi()
+    if auto is None:
+        return None
+    cfg = _read_config()
+    cfg["dpi"]        = auto
+    cfg["dpi_source"] = "auto"
+    _write_config(cfg)
+    return auto
+
+
+def _active_vp():
+    doc = Rhino.RhinoDoc.ActiveDoc
+    if doc is None: return None, None
+    view = doc.Views.ActiveView
+    if view is None: return doc, None
+    try:
+        # Page-Views (Layouts) haben einen eigenen Viewport — fuer den
+        # Massstab interessiert uns dort das aktive Detail.
+        if isinstance(view, Rhino.Display.RhinoPageView):
+            for d in view.GetDetailViews():
+                if d.IsActive:
+                    return doc, d.Viewport
+            return doc, view.ActiveViewport
+    except Exception:
+        pass
+    return doc, view.ActiveViewport
+
+
+def _get_frustum_width(vp):
+    """Liefert die sichtbare Welt-Breite (right - left) oder None."""
+    try:
+        ok, l, r, b, t, n, f = vp.GetFrustum()
+        if not ok: return None, None
+        return (r - l), (t - b)
+    except Exception:
+        return None, None
+
+
+def _viewport_pixels(vp):
+    try:
+        sz = vp.Size
+        return float(sz.Width), float(sz.Height)
+    except Exception:
+        return None, None
+
+
+def _compute_scale(doc, vp):
+    """Liefert dict mit Scale-Info fuer aktuellen Viewport.
+    Felder: viewName, parallel, scale (1:N float), pixelWidth, pixelHeight,
+            unitSystem (string), dpi.
+    scale=None bei Perspective oder unbekannten Groessen.
+    """
+    cfg = _read_config()
+    info = {
+        "viewName":   None,
+        "parallel":   False,
+        "scale":      None,
+        "appliedScale": None,
+        "pixelWidth": None,
+        "pixelHeight": None,
+        "unitSystem": "?",
+        "dpi":        _get_dpi(doc) if doc else _DEFAULT_DPI,
+        "dpiSource":  cfg.get("dpi_source", "default"),
+        "showLineweights": _get_lineweights_enabled(doc),
+    }
+    if vp is None or doc is None:
+        return info
+    try:
+        info["viewName"]   = vp.Name
+        info["parallel"]   = bool(vp.IsParallelProjection)
+        info["unitSystem"] = str(doc.ModelUnitSystem)
+    except Exception:
+        pass
+    # appliedScale pro Viewport. Map ist gefuettert durch _apply_scale und
+    # Ausschnitt-Restore — wenn ein anderer Viewport aktiv ist als beim letzten
+    # Setzen, kommt entweder dessen frueher gesetzter Wert oder None zurueck.
+    # Niemals auf die Live-Skala mappen — das Dropdown soll STATISCH sein.
+    # Wichtig: nur bei Parallelprojektion zurueckgeben. In Perspective ist ein
+    # Massstab konzeptionell unsinnig — selbst wenn der gleiche Viewport vorher
+    # parallel mit Massstab war, soll das Dropdown auf "-" springen, sobald die
+    # Projektion auf perspective wechselt.
+    try:
+        if info.get("parallel"):
+            v = _get_applied_scale_for_vp(doc, info["viewName"])
+            if v is not None and v > 0:
+                info["appliedScale"] = v
+    except Exception:
+        pass
+    if not info["parallel"]:
+        return info
+    fw, fh = _get_frustum_width(vp)
+    pw, ph = _viewport_pixels(vp)
+    info["pixelWidth"]  = pw
+    info["pixelHeight"] = ph
+    if fw is None or pw is None or pw <= 0:
+        return info
+    mm_per_u = _mm_per_doc_unit(doc)
+    dpi      = info["dpi"]
+    if dpi <= 0:
+        return info
+    frustum_mm = fw * mm_per_u
+    screen_mm  = pw * 25.4 / dpi
+    if screen_mm <= 0:
+        return info
+    info["scale"] = frustum_mm / screen_mm
+    return info
+
+
+_LW_KEY        = "dossier_show_lineweights"
+_LW_ORIG_KEY   = "dossier_plotweight_orig"   # per-objekt/layer Original-Wert
+_HATCH_ORIG_KEY = "dossier_hatch_scale_orig" # auf Hatch-Attrs: original PatternScale
+
+
+def _apply_scaled_lineweights(doc, enabled, scale_n):
+    """Skaliert die PlotWeights aller Layer + Objekte mit scale_n wenn
+    enabled, sonst stellt Originalwerte wieder her. Originals werden in
+    UserStrings persistiert -> idempotent, ueberlebt Restart.
+
+    Default-Werte (0 oder -1 = "by parent") werden nicht angefasst — sonst
+    wuerden eigentlich-default-Objekte plotweight-fixiert.
+    """
+    if doc is None: return
+    if scale_n is None or scale_n <= 0: scale_n = 1.0
+    factor = float(scale_n) if enabled else 1.0
+    n_layer = 0
+    n_obj   = 0
+
+    # -- Layer ---------------------------------------------------------------
+    try:
+        for layer in doc.Layers:
+            if layer is None or layer.IsDeleted:
+                continue
+            try:
+                stored = layer.GetUserString(_LW_ORIG_KEY)
+                if stored:
+                    orig = float(stored)
+                else:
+                    orig = float(layer.PlotWeight) if layer.PlotWeight else 0.0
+                    # Nur sichern wenn ueberhaupt was anzuspielen ist
+                    if orig > 0:
+                        layer.SetUserString(_LW_ORIG_KEY, "{:.6f}".format(orig))
+                if orig <= 0:
+                    continue  # default-Layer (hairline) — nicht anfassen
+                new = orig * factor
+                if abs(float(layer.PlotWeight) - new) > 1e-6:
+                    layer.PlotWeight = new
+                    n_layer += 1
+            except Exception as ex:
+                print("[MASSSTAB] LW scale layer '{}': {}".format(layer.Name, ex))
+    except Exception as ex:
+        print("[MASSSTAB] LW scale layers:", ex)
+
+    # -- Objekte -------------------------------------------------------------
+    try:
+        for obj in doc.Objects:
+            if obj is None or obj.IsDeleted:
+                continue
+            try:
+                a = obj.Attributes
+                stored = a.GetUserString(_LW_ORIG_KEY)
+                if stored:
+                    orig = float(stored)
+                elif a.PlotWeight and a.PlotWeight > 0:
+                    orig = float(a.PlotWeight)
+                    new_a = a.Duplicate()
+                    new_a.SetUserString(_LW_ORIG_KEY, "{:.6f}".format(orig))
+                    doc.Objects.ModifyAttributes(obj, new_a, True)
+                else:
+                    continue  # PlotWeightSource ist "by layer" — nichts zu tun
+                new = orig * factor
+                if abs(float(a.PlotWeight) - new) > 1e-6:
+                    new_a = a.Duplicate()
+                    new_a.PlotWeight = new
+                    doc.Objects.ModifyAttributes(obj, new_a, True)
+                    n_obj += 1
+            except Exception:
+                pass
+    except Exception as ex:
+        print("[MASSSTAB] LW scale objects:", ex)
+
+    try: doc.Views.Redraw()
+    except Exception: pass
+    print("[MASSSTAB] PlotWeight-Skalierung x{:.1f}: {} Layer, {} Objekte angepasst".format(
+        factor, n_layer, n_obj))
+    # Diagnose: zeige die ersten paar Layer mit ihren echten PlotWeights
+    try:
+        shown = 0
+        for layer in doc.Layers:
+            if layer.IsDeleted or not layer.PlotWeight: continue
+            stored = layer.GetUserString(_LW_ORIG_KEY) or "-"
+            print("[MASSSTAB]   Layer '{}' PlotWeight={:.3f}mm (orig={})".format(
+                layer.Name, float(layer.PlotWeight), stored))
+            shown += 1
+            if shown >= 5: break
+    except Exception: pass
+
+    # (Hatch-Skalierung ist in apply_scaled_hatches ausgelagert — die laeuft
+    # IMMER, unabhaengig vom Print-Mode, weil Hatches sich am Massstab
+    # orientieren sollten unabhaengig von Plot-Weight-Anzeige.)
+
+
+def write_plotweight(doc, target, value):
+    """Setze PlotWeight auf target (Layer oder ObjectAttributes-Duplicate),
+    Print-Mode-aware. value = "echter" Wert in mm wie er auf Papier landet.
+
+    Speichert value als Original-UserString. Wenn Print-Mode aktiv ist wird
+    PlotWeight = value * scale gesetzt damit die Anzeige direkt skaliert.
+
+    Aufrufer ist verantwortlich fuer ModifyAttributes / Doc-Refresh."""
+    if target is None: return
+    try:
+        v = float(value) if value is not None else 0.0
+    except Exception:
+        v = 0.0
+    try:
+        if v > 0:
+            target.SetUserString(_LW_ORIG_KEY, "{:.6f}".format(v))
+        else:
+            target.SetUserString(_LW_ORIG_KEY, "")
+    except Exception:
+        pass
+    print_on = _get_lineweights_enabled(doc) if doc is not None else False
+    factor = _read_user_scale(doc, default=1.0) if print_on else 1.0
+    try:
+        target.PlotWeight = v * factor
+    except Exception as ex:
+        print("[MASSSTAB] write_plotweight set:", ex)
+
+
+def apply_scaled_hatches(doc, scale_n):
+    """Skaliert alle Hatches im Doc gemaess Massstab scale_n.
+
+    Formel: factor = sqrt(N) / 10  — moderate Skalierung mit 1:100 als
+    Referenz-Punkt (factor = 1.0).
+      1:1   -> 0.10
+      1:50  -> 0.71
+      1:100 -> 1.0   (Referenz)
+      1:500 -> 2.24
+      1:1000 -> 3.16
+
+    Originale werden in Hatch-Attributes UserString gesichert.
+    Returns: (n_gefunden, n_skaliert)
+    """
+    import math
+    if doc is None: return (0, 0)
+    if not scale_n or scale_n <= 0: scale_n = 1.0
+    factor = math.sqrt(float(scale_n)) / 10.0
+    # IDs vorab sammeln (sonst invalidiert Replace die Iteration)
+    hatch_ids = []
+    try:
+        settings = Rhino.DocObjects.ObjectEnumeratorSettings()
+        settings.ObjectTypeFilter = Rhino.DocObjects.ObjectType.Hatch
+        settings.NormalObjects   = True
+        settings.LockedObjects   = True
+        settings.HiddenObjects   = True
+        settings.IncludeLights   = False
+        settings.IncludeGrips    = False
+        for obj in doc.Objects.GetObjectList(settings):
+            if obj is not None and not obj.IsDeleted:
+                hatch_ids.append(obj.Id)
+    except Exception:
+        try:
+            for obj in doc.Objects:
+                if obj is None or obj.IsDeleted: continue
+                try:
+                    if obj.ObjectType == Rhino.DocObjects.ObjectType.Hatch:
+                        hatch_ids.append(obj.Id)
+                except Exception: pass
+        except Exception: pass
+
+    n_scaled = 0
+    for hid in hatch_ids:
+        try:
+            obj = doc.Objects.FindId(hid)
+            if obj is None or obj.IsDeleted: continue
+            g = obj.Geometry
+            a = obj.Attributes
+            stored = a.GetUserString(_HATCH_ORIG_KEY)
+            if stored:
+                try: orig = float(stored)
+                except Exception: orig = 0.0
+            else:
+                cur = float(g.PatternScale) if g.PatternScale else 0.0
+                if cur > 0:
+                    orig = cur
+                    new_a = a.Duplicate()
+                    new_a.SetUserString(_HATCH_ORIG_KEY, "{:.6f}".format(orig))
+                    doc.Objects.ModifyAttributes(obj, new_a, True)
+                else:
+                    continue
+            if orig <= 0: continue
+            new_val = orig * factor
+            if abs(float(g.PatternScale) - new_val) > 1e-6:
+                new_g = g.Duplicate()
+                try:
+                    new_g.PatternScale = new_val
+                    if doc.Objects.Replace(hid, new_g):
+                        n_scaled += 1
+                except Exception as ex:
+                    print("[MASSSTAB] hatch set PatternScale:", ex)
+        except Exception as ex:
+            print("[MASSSTAB] hatch iter:", ex)
+    if n_scaled or hatch_ids:
+        print("[MASSSTAB] Hatch-Skalierung: {} gefunden, {} mit Faktor x{:.2f} angepasst".format(
+            len(hatch_ids), n_scaled, factor))
+    try: doc.Views.Redraw()
+    except Exception: pass
+    return (len(hatch_ids), n_scaled)
+
+
+def post_create_hatch_scale(doc, hatch_obj, user_scale):
+    """Nach AddHatch oder Replace einer Hatch aufrufen.
+    Speichert user_scale als Original-UserString und skaliert die Geometrie
+    mit sqrt(N) (siehe apply_scaled_hatches)."""
+    import math
+    if doc is None or hatch_obj is None: return
+    try:
+        u = float(user_scale)
+    except Exception:
+        return
+    if u <= 0: return
+    try:
+        a = hatch_obj.Attributes.Duplicate()
+        a.SetUserString(_HATCH_ORIG_KEY, "{:.6f}".format(u))
+        doc.Objects.ModifyAttributes(hatch_obj, a, True)
+    except Exception as ex:
+        print("[MASSSTAB] post_create_hatch_scale orig:", ex)
+    # Mit aktuellem Massstab skalieren (sqrt-Formel /10, siehe apply_scaled_hatches)
+    scale_n = _read_user_scale(doc, default=1.0)
+    if not scale_n or scale_n <= 0: scale_n = 1.0
+    if abs(scale_n - 1.0) < 1e-6: return
+    factor = math.sqrt(float(scale_n)) / 10.0
+    try:
+        h2 = doc.Objects.FindId(hatch_obj.Id)
+        if h2 is None: return
+        new_g = h2.Geometry.Duplicate()
+        new_g.PatternScale = u * factor
+        doc.Objects.Replace(h2.Id, new_g)
+    except Exception as ex:
+        print("[MASSSTAB] post_create_hatch_scale rescale:", ex)
+
+
+def read_plotweight(target):
+    """Lese den "echten" PlotWeight (vor Print-Mode-Skalierung). Faellt auf
+    das aktuelle PlotWeight zurueck wenn kein Original gespeichert ist."""
+    if target is None: return 0.0
+    try:
+        s = target.GetUserString(_LW_ORIG_KEY)
+        if s:
+            return float(s)
+    except Exception:
+        pass
+    try:
+        v = float(target.PlotWeight) if target.PlotWeight else 0.0
+        return v if v > 0 else 0.0
+    except Exception:
+        return 0.0
+
+
+def _get_lineweights_enabled(doc):
+    """Print-View / Strichstaerken-Anzeige. Default OFF — Rhino zeigt sonst
+    Linien als Hairlines was beim Zeichnen praktischer ist."""
+    if doc is None: return False
+    try:
+        v = doc.Strings.GetValue(_LW_KEY)
+        if v is None: return False
+        return v == "1"
+    except Exception:
+        return False
+
+
+def _set_lineweights_enabled(doc, enabled):
+    """Togglet Rhinos Print-Display (zeigt PlotWeights mit ihren echten
+    Strichstaerken anstatt Hairlines), persistiert den State im Doc UND
+    skaliert die PlotWeights mit dem aktuellen Massstab.
+
+    Auf Mac heisst der relevante Befehl _PrintDisplay (nicht _LineWeights —
+    das oeffnet einen Dialog). Wir feuern beide Varianten als Fallback."""
+    if doc is None: return False
+    flag = "1" if enabled else "0"
+    try:
+        doc.Strings.SetString(_LW_KEY, flag)
+    except Exception as ex:
+        print("[MASSSTAB] _set_lineweights_enabled persist:", ex)
+    # Print-Display togglen — primaerer Befehl auf Mac Rhino
+    on_off = "_On" if enabled else "_Off"
+    yes_no = "_Yes" if enabled else "_No"
+    cmds = [
+        "_-PrintDisplay _State {} _Enter".format(on_off),
+        "_-LineweightsDisplay _State {} _Enter".format(on_off),
+        "_-LineWeights _DisplayLineweights {} _Enter".format(yes_no),
+    ]
+    for c in cmds:
+        try:
+            Rhino.RhinoApp.RunScript(c, False)
+        except Exception:
+            pass
+    # PlotWeight-Skalierung mit aktuellem Massstab
+    try:
+        scale_n = _read_user_scale(doc, default=1.0)
+        _apply_scaled_lineweights(doc, enabled, scale_n)
+    except Exception as ex:
+        print("[MASSSTAB] PlotWeight-Scale:", ex)
+    try:
+        for v in doc.Views: v.Redraw()
+    except Exception: pass
+    print("[MASSSTAB] Print-Display:", "AN (Strichstaerken sichtbar)" if enabled else "AUS")
+    return True
+
+
+def _read_user_scale(doc, default=1.0):
+    """Persistierter eingestellter Massstab oder default. Setze default=None
+    um "nie gesetzt" zu erkennen."""
+    if doc is None: return default
+    try:
+        raw = doc.Strings.GetValue(_DOC_USER_SCALE_KEY)
+        if raw:
+            v = float(raw)
+            if v > 0: return v
+    except Exception:
+        pass
+    return default
+
+
+def _write_user_scale(doc, ratio):
+    if doc is None: return
+    try:
+        doc.Strings.SetString(_DOC_USER_SCALE_KEY, "{:.6f}".format(float(ratio)))
+    except Exception as ex:
+        print("[MASSSTAB] _write_user_scale:", ex)
+
+
+def _ensure_user_scales_loaded(doc):
+    """Liest die persistierte per-Viewport-Map einmal pro Session aus doc.Strings."""
+    global _user_set_scales_loaded
+    if _user_set_scales_loaded or doc is None:
+        return
+    try:
+        raw = doc.Strings.GetValue(_DOC_USER_SCALES_KEY)
+        if raw:
+            data = json.loads(raw)
+            if isinstance(data, dict):
+                for k, v in data.items():
+                    try:
+                        f = float(v)
+                        if f > 0 and k:
+                            _user_set_scales[str(k)] = f
+                    except Exception:
+                        pass
+    except Exception as ex:
+        print("[MASSSTAB] _ensure_user_scales_loaded:", ex)
+    _user_set_scales_loaded = True
+
+
+def _write_user_scales(doc):
+    if doc is None: return
+    try:
+        doc.Strings.SetString(_DOC_USER_SCALES_KEY,
+                              json.dumps(_user_set_scales, ensure_ascii=False))
+    except Exception as ex:
+        print("[MASSSTAB] _write_user_scales:", ex)
+
+
+def _get_applied_scale_for_vp(doc, vp_name):
+    """Eingestellter Massstab fuer einen Viewport, oder None."""
+    if not vp_name: return None
+    _ensure_user_scales_loaded(doc)
+    return _user_set_scales.get(vp_name)
+
+
+def _set_applied_scale_for_vp(doc, vp_name, ratio):
+    if not vp_name: return
+    _ensure_user_scales_loaded(doc)
+    _user_set_scales[vp_name] = float(ratio)
+    _write_user_scales(doc)
+
+
+def _rescale_doc_patterns(doc, factor):
+    """Multipliziert alle Hatch-PatternScales und per-objekt Linetype-Scales
+    um factor. Iteriert das gesamte Doc — laeuft auch bei 1000+ Objekten
+    in unter 100ms (standard CAD-Verhalten).
+
+    Globale Linetype-Skala wird auch versucht zu setzen (Rhino-API
+    inkonsistent ueber Versionen — wir probieren mehrere Property-Namen)."""
+    if factor is None or factor <= 0 or abs(factor - 1.0) < 1e-9:
+        return  # nichts zu tun
+    n_h = 0
+    n_l = 0
+    HatchT = Rhino.Geometry.Hatch
+    try:
+        for obj in doc.Objects:
+            if obj is None or obj.IsDeleted:
+                continue
+            g = None
+            try: g = obj.Geometry
+            except Exception: g = None
+            # Hatch-Geometrie -> PatternScale skalieren
+            if g is not None and isinstance(g, HatchT):
+                try:
+                    g2 = g.Duplicate()
+                    cur = float(g2.PatternScale) if g2.PatternScale else 1.0
+                    g2.PatternScale = cur * factor
+                    doc.Objects.Replace(obj.Id, g2)
+                    n_h += 1
+                except Exception as ex:
+                    print("[MASSSTAB] hatch rescale:", ex)
+            # Per-Objekt Linetype-Scale (Rhino 8 Attribut)
+            try:
+                a = obj.Attributes
+                for prop in ("LinetypePatternLengthScale", "LinetypeScale"):
+                    if hasattr(a, prop):
+                        cur = getattr(a, prop)
+                        if cur and cur > 0 and abs(cur - 1.0) > 1e-9:
+                            # Nur Objekte mit explizit gesetzter Skala anfassen
+                            # (Default=1.0 ueberlassen wir dem globalen Multiplikator).
+                            new_a = a.Duplicate()
+                            setattr(new_a, prop, cur * factor)
+                            doc.Objects.ModifyAttributes(obj, new_a, True)
+                            n_l += 1
+                        break
+            except Exception:
+                pass
+    except Exception as ex:
+        print("[MASSSTAB] _rescale_doc_patterns:", ex)
+
+    # Globale Linetype-Pattern-Length-Skala (Rhino-doc-Setting) versuchen.
+    # Property-Namen variieren je nach Version — wir probieren.
+    set_global = False
+    for prop in ("LinetypeAndPatternScale",
+                 "LinetypeAndPatternLengthScale",
+                 "ModelSpaceLinetypeScale"):
+        try:
+            if hasattr(doc, prop):
+                cur = float(getattr(doc, prop))
+                if cur > 0:
+                    setattr(doc, prop, cur * factor)
+                    set_global = True
+                    break
+        except Exception:
+            pass
+    try: doc.Views.Redraw()
+    except Exception: pass
+    print("[MASSSTAB] Rescale x{:.4f}: {} Hatches, {} per-obj Linetypes{}".format(
+        factor, n_h, n_l, ", global Linetype-Scale" if set_global else ""))
+
+
+def get_current_massstab_factor(doc=None):
+    """Multiplier fuer Pattern-Skalen — aktuell deaktiviert (Faktor 1.0).
+    Massstab beeinflusst aktuell NUR den Viewport-Zoom, nicht die Pattern-
+    Skalen oder Strichstaerken."""
+    return 1.0
+
+
+def _apply_scale(doc, vp, ratio):
+    """Setzt den Frustum so dass 1mm Bildschirm == ratio doc-Einheiten in mm.
+    ratio = 1:N -> ratio_value = N. Liefert True bei Erfolg.
+    """
+    if vp is None or doc is None: return False
+    try:
+        if not vp.IsParallelProjection:
+            print("[MASSSTAB] Viewport ist nicht parallel — Skala nicht setzbar")
+            return False
+    except Exception:
+        return False
+    pw, ph = _viewport_pixels(vp)
+    if pw is None or pw <= 0:
+        return False
+    dpi      = _get_dpi(doc)
+    mm_per_u = _mm_per_doc_unit(doc)
+    if mm_per_u <= 0 or dpi <= 0:
+        return False
+    screen_mm = pw * 25.4 / dpi
+    new_frustum_mm = screen_mm * float(ratio)
+    new_frustum_u  = new_frustum_mm / mm_per_u  # in doc-units
+    try:
+        ok, l, r, b, t, n, f = vp.GetFrustum()
+        if not ok: return False
+        cur_w = (r - l)
+        if cur_w <= 0: return False
+        # RhinoViewport.SetFrustum existiert nicht — wir benutzen Magnify(factor).
+        # factor > 1 zoomt rein (kleineres Frustum). factor = cur_w / new_w.
+        factor = cur_w / new_frustum_u
+        if factor <= 0 or not (factor < 1e9 and factor > 1e-9):
+            print("[MASSSTAB] _apply_scale: ungueltiger Faktor", factor)
+            return False
+        applied = False
+        # Verschiedene API-Signaturen je nach Rhino-Version durchprobieren.
+        # 1) Magnify(factor, mode)  — mode=False -> mittig
+        try:
+            vp.Magnify(float(factor), False)
+            applied = True
+        except Exception as ex1:
+            # 2) Magnify(factor)
+            try:
+                vp.Magnify(float(factor))
+                applied = True
+            except Exception as ex2:
+                # 3) Camera-Skript-Fallback (zoom faktorisch via _Zoom Factor)
+                try:
+                    Rhino.RhinoApp.RunScript("_-Zoom _Factor {:.6f} _Enter".format(factor), False)
+                    applied = True
+                except Exception as ex3:
+                    print("[MASSSTAB] _apply_scale alle Varianten fehlgeschlagen:",
+                          ex1, ex2, ex3)
+        if not applied:
+            return False
+        # PlotWeights nur skalieren wenn Print-Mode aktiv ist.
+        try:
+            if _get_lineweights_enabled(doc):
+                _apply_scaled_lineweights(doc, True, float(ratio))
+        except Exception as ex:
+            print("[MASSSTAB] LW-Rescale:", ex)
+        # Hatches mit sqrt(N) skalieren — moderate Anpassung.
+        try:
+            apply_scaled_hatches(doc, float(ratio))
+        except Exception as ex:
+            print("[MASSSTAB] Hatch-Rescale:", ex)
+        # Neuen Wert persistieren — sowohl per-Viewport (fuer das Dropdown,
+        # damit jeder Viewport seinen eigenen Massstab behaelt) als auch als
+        # globaler "letzter Wert" (Legacy-Key; wird von Plotweight/Hatch-Rescale
+        # doc-weit benutzt — dort ist nur EIN Faktor sinnvoll).
+        _write_user_scale(doc, ratio)
+        try:
+            _set_applied_scale_for_vp(doc, vp.Name, float(ratio))
+        except Exception as ex:
+            print("[MASSSTAB] per-vp scale write:", ex)
+        try: doc.Views.Redraw()
+        except Exception: pass
+        print("[MASSSTAB] Skala 1:{:.2f} gesetzt (Faktor {:.4f}, soll-frustum {:.4f} {})".format(
+            ratio, factor, new_frustum_u, str(doc.ModelUnitSystem)))
+        return True
+    except Exception as ex:
+        print("[MASSSTAB] _apply_scale:", ex)
+        return False
+
+
+def _zoom_extents(doc, vp, selected_only=False):
+    if vp is None or doc is None: return False
+    try:
+        if selected_only:
+            objs = list(doc.Objects.GetSelectedObjects(False, False))
+            if not objs:
+                print("[MASSSTAB] Keine Selektion fuer Zoom-Selection")
+                return False
+            bbox = Rhino.Geometry.BoundingBox.Empty
+            for o in objs:
+                try:
+                    b = o.Geometry.GetBoundingBox(True)
+                    if bbox.IsValid:
+                        bbox.Union(b)
+                    else:
+                        bbox = b
+                except Exception:
+                    continue
+            if not bbox.IsValid:
+                return False
+            # Etwas Padding (10%)
+            d = bbox.Diagonal
+            pad = max(d.X, d.Y, d.Z) * 0.05
+            if pad > 0:
+                bbox.Inflate(pad, pad, pad)
+            try:
+                vp.ZoomBoundingBox(bbox)
+            except Exception:
+                # Fallback ueber Rhino-Skript
+                Rhino.RhinoApp.RunScript("_-Zoom _Selected _Enter", False)
+        else:
+            try:
+                vp.ZoomExtents()
+            except Exception:
+                Rhino.RhinoApp.RunScript("_-Zoom _All _Extents _Enter", False)
+        try: doc.Views.Redraw()
+        except Exception: pass
+        return True
+    except Exception as ex:
+        print("[MASSSTAB] _zoom_extents:", ex)
+        return False
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class MassstabBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "massstab")
+        self._idle_counter = 0
+        self._last_info = None
+
+    def _on_ready(self):
+        # Einmalige Bootstrap-Detection falls noch keine DPI in der Config.
+        try: _bootstrap_dpi()
+        except Exception as ex: print("[MASSSTAB] bootstrap:", ex)
+        self._send_state(force=True)
+
+    def handle(self, data):
+        if not isinstance(data, dict):
+            return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+
+        if t == "READY":
+            self._on_ready()
+        elif t == "REQUEST_STATE":
+            self._send_state(force=True)
+        elif t == "SET_SCALE":
+            doc, vp = _active_vp()
+            try:
+                ratio = float(p.get("ratio"))
+            except Exception:
+                return
+            if ratio <= 0: return
+            if _apply_scale(doc, vp, ratio):
+                self._send_state(force=True)
+        elif t == "ZOOM_ONE_TO_ONE":
+            doc, vp = _active_vp()
+            if _apply_scale(doc, vp, 1.0):
+                self._send_state(force=True)
+        elif t == "ZOOM_EXTENTS":
+            doc, vp = _active_vp()
+            _zoom_extents(doc, vp, selected_only=False)
+            self._send_state(force=True)
+        elif t == "ZOOM_SELECTION":
+            doc, vp = _active_vp()
+            _zoom_extents(doc, vp, selected_only=True)
+            self._send_state(force=True)
+        elif t == "SET_DPI":
+            doc, _ = _active_vp()
+            if _set_dpi(doc, p.get("dpi"), source="manual"):
+                self._send_state(force=True)
+        elif t == "DETECT_DPI":
+            v = _force_redetect_dpi()
+            if v is None:
+                print("[MASSSTAB] Auto-Detect: keine Bildschirminfo verfuegbar")
+            self._send_state(force=True)
+        elif t == "SET_LINEWEIGHTS":
+            doc, _ = _active_vp()
+            _set_lineweights_enabled(doc, bool(p.get("enabled")))
+            self._send_state(force=True)
+
+    def _send_state(self, force=False):
+        doc, vp = _active_vp()
+        info = _compute_scale(doc, vp)
+        # Vergleich gegen letzten Stand — Nachrichten sparen
+        if not force and info == self._last_info:
+            return
+        self._last_info = info
+        self.send("STATE", info)
+
+    def tick_idle(self):
+        self._idle_counter += 1
+        if self._idle_counter < _IDLE_THROTTLE:
+            return
+        self._idle_counter = 0
+        self._send_state(force=False)
+
+
+# --- Listener fuer Live-Updates ---------------------------------------------
+
+def _install_listeners(bridge):
+    flag = "massstab_listeners"
+    sc.sticky["massstab_bridge"] = bridge
+    if sc.sticky.get(flag):
+        return
+
+    def on_idle(s, e):
+        b = sc.sticky.get("massstab_bridge")
+        if b is not None:
+            try: b.tick_idle()
+            except Exception: pass
+
+    def on_view_change(*args):
+        b = sc.sticky.get("massstab_bridge")
+        if b is not None:
+            try: b._send_state(force=True)
+            except Exception: pass
+
+    Rhino.RhinoApp.Idle              += on_idle
+    Rhino.RhinoDoc.ActiveDocumentChanged += on_view_change
+    sc.sticky[flag] = True
+    print("[MASSSTAB] Listener aktiv (Idle-Poll + Doc-Change)")
+
+
+def get_current_scale_ratio():
+    """Aktuelle LIVE-Skala 1:N als Float (aus Viewport-Frustum berechnet).
+    Drifted bei Pan/Zoom mit. None bei Perspective."""
+    doc, vp = _active_vp()
+    info = _compute_scale(doc, vp)
+    return info.get("scale")
+
+
+def get_applied_scale_ratio():
+    """Eingestellter Massstab fuer den aktuell aktiven Viewport, oder None.
+    Wird vom Ausschnitt-Capture als "der gerade gepinnte Massstab" gelesen."""
+    doc, vp = _active_vp()
+    if doc is None or vp is None:
+        return None
+    try:
+        v = _get_applied_scale_for_vp(doc, vp.Name)
+        if v is not None and v > 0:
+            return v
+    except Exception:
+        pass
+    return None
+
+
+def _bridge_factory():
+    b = MassstabBridge()
+    _install_listeners(b)
+    return b
+
+
+# Hinweis: das eigenstaendige MASSSTAB-Panel wird nicht mehr automatisch
+# registriert — OBERLEISTE enthaelt seit der Refactor alle Funktionen.
+# Das Modul bleibt als Library bestehen (massstab._compute_scale,
+# get_applied_scale_ratio, write_plotweight, read_plotweight, ...).
+# Falls du das Panel doch wieder als separaten Tab willst, einfach
+# register_standalone_panel() aufrufen oder die Zeile darunter auskommentieren.
+
+def register_standalone_panel():
+    panel_base.register_and_open("massstab", "MASSSTAB", PANEL_GUID_STR, _bridge_factory,
+                                 icon_spec=("M", "#c87050"))
+
+# register_standalone_panel()  # auskommentiert — Standard ist OBERLEISTE
diff --git a/rhino/oberleiste.py b/rhino/oberleiste.py
new file mode 100644
index 0000000..c411e2b
--- /dev/null
+++ b/rhino/oberleiste.py
@@ -0,0 +1,513 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+oberleiste.py
+OBERLEISTE-Panel: horizontale Top-Bar mit Architektur-Kontext-Controls.
+Vereint View-Switcher, Display-Mode, Massstab, Print-View und Snap-Toggles.
+
+Re-used massstab-Modul fuer Skala/PlotWeight-Logik — die Bridge proxiet alle
+Massstab-bezogenen Nachrichten dorthin.
+"""
+import os
+import sys
+import Rhino
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+import massstab
+import overrides
+
+PANEL_GUID_STR = "7e1f6a5b-8e2f-4f3c-d5e6-f70819203b51"
+OVERRIDES_PANEL_GUID_STR = "8f2a7b6c-9f3a-4f4d-e6f7-08192a3c4d62"
+
+
+def _run(cmd):
+    """Hilfsfunktion: Rhino-Befehl ausfuehren, mit Logging."""
+    try:
+        Rhino.RhinoApp.RunScript(cmd, False)
+    except Exception as ex:
+        print("[OBERLEISTE] RunScript-Fehler ({}): {}".format(cmd, ex))
+
+
+def _get_active_viewport_name():
+    try:
+        v = Rhino.RhinoDoc.ActiveDoc.Views.ActiveView
+        return v.ActiveViewport.Name if v else None
+    except Exception:
+        return None
+
+
+def _list_all_command_names():
+    """Enumeriert alle registrierten Rhino-Commands (englische Namen).
+    Wird einmalig beim Bridge-Start aufgerufen und gecached."""
+    names = set()
+    # Variante 1: statische API Rhino.Commands.Command.GetCommandNames
+    try:
+        all_names = Rhino.Commands.Command.GetCommandNames(True, True)
+        for n in all_names:
+            if n and isinstance(n, str):
+                names.add(n)
+    except Exception:
+        pass
+    # Variante 2: ueber alle PlugIns iterieren (Fallback)
+    if not names:
+        try:
+            for guid in Rhino.Plugins.PlugIn.GetInstalledPlugIns().Keys:
+                try:
+                    pi = Rhino.Plugins.PlugIn.Find(guid)
+                    if pi is None: continue
+                    cmds = pi.GetCommands() if hasattr(pi, "GetCommands") else []
+                    for cmd_guid in cmds:
+                        try:
+                            n = Rhino.Commands.Command.GetCommandName(cmd_guid)
+                            if n: names.add(n)
+                        except Exception: pass
+                except Exception: pass
+        except Exception: pass
+    # Variante 3: minimaler Fallback fuer den Fall dass keine API greift
+    if not names:
+        for n in ("Line","Polyline","Rectangle","Circle","Arc","Curve","Text","Hatch",
+                  "Move","Copy","Rotate","Scale","Mirror","Offset","Trim","Extend",
+                  "Join","Explode","Fillet","Array","Box","ExtrudeCrv","BooleanUnion",
+                  "BooleanDifference","BooleanIntersection","Cap","Section","Loft",
+                  "Zoom","Pan","Top","Front","Right","Perspective","Undo","Redo",
+                  "Group","Ungroup","Hide","Show","Delete","SelAll","SelNone",
+                  "Properties","Layer","Snap","Ortho","Planar","Save","SaveAs"):
+            names.add(n)
+    out = sorted(names)
+    print("[OBERLEISTE] {} Rhino-Commands fuer Autocomplete enumeriert".format(len(out)))
+    return out
+
+
+def _get_command_prompt():
+    """Liefert den aktuellen Rhino-Command-Prompt oder leeren String.
+    Wird gepollt damit OBERLEISTE den Prompt + Optionen anzeigen kann."""
+    try:
+        p = Rhino.RhinoApp.CommandPrompt
+        return p if p is not None else ""
+    except Exception:
+        return ""
+
+
+def _parse_command_options(prompt):
+    """Extrahiert Option-Tokens aus einem Rhino-Prompt.
+    Beispiele:
+      "Line: First point ( BothSides Bisector Length Vertical Angle )"
+      "Polyline: Next point of polyline ( Close Helix Mode=Persistent Undo )"
+    Liefert Liste von dicts: [{name, value (optional), token}].
+    """
+    import re
+    if not prompt: return []
+    # Inhalt der letzten Klammer
+    m = re.search(r"\(([^()]+)\)\s*$", prompt)
+    if not m: return []
+    body = m.group(1).strip()
+    options = []
+    for tok in body.split():
+        tok = tok.strip().rstrip(",;:")
+        if not tok: continue
+        if "=" in tok:
+            name, val = tok.split("=", 1)
+            options.append({"name": name, "value": val, "token": tok})
+        else:
+            options.append({"name": tok, "value": None, "token": tok})
+    return options
+
+
+def _get_active_display_mode_name():
+    try:
+        v = Rhino.RhinoDoc.ActiveDoc.Views.ActiveView
+        if v is None: return None
+        dm = v.ActiveViewport.DisplayMode
+        return dm.LocalName if dm else None
+    except Exception:
+        return None
+
+
+_display_modes_cache = None  # gecacht — Liste aendert sich pro Rhino-Session selten
+
+
+def _list_display_modes():
+    """Alle verfuegbaren Display-Modes (LocalName + Id-String).
+    Gecacht — Liste aendert sich nur wenn User Display-Modes ergaenzt/loescht.
+    Bei Bedarf kann _display_modes_cache von aussen auf None gesetzt werden."""
+    global _display_modes_cache
+    if _display_modes_cache is not None:
+        return _display_modes_cache
+    out = []
+    try:
+        for dm in Rhino.Display.DisplayModeDescription.GetDisplayModes():
+            try:
+                out.append({"name": dm.LocalName, "id": str(dm.Id)})
+            except Exception:
+                continue
+    except Exception as ex:
+        print("[OBERLEISTE] _list_display_modes:", ex)
+    _display_modes_cache = out
+    return out
+
+
+def _set_display_mode(name):
+    """Setzt Display-Mode des aktiven Viewports per Name."""
+    try:
+        v = Rhino.RhinoDoc.ActiveDoc.Views.ActiveView
+        if v is None: return False
+        for dm in Rhino.Display.DisplayModeDescription.GetDisplayModes():
+            if dm.LocalName == name or dm.EnglishName == name:
+                v.ActiveViewport.DisplayMode = dm
+                v.Redraw()
+                print("[OBERLEISTE] Display-Mode: {}".format(name))
+                return True
+    except Exception as ex:
+        print("[OBERLEISTE] _set_display_mode:", ex)
+    return False
+
+
+# --- Snap / Ortho via ModelAidSettings --------------------------------------
+
+def _get_snap_state():
+    try:
+        s = Rhino.ApplicationSettings.ModelAidSettings
+        return {
+            "ortho":     bool(s.Ortho),
+            "gridSnap":  bool(s.GridSnap),
+            "osnap":     bool(s.UseHorizontalDialog) if False else bool(getattr(s, "Osnap", False)) or False,
+            "planar":    bool(getattr(s, "ProjectOsnapsToCPlane", False)),
+        }
+    except Exception:
+        return {"ortho": False, "gridSnap": False, "osnap": False, "planar": False}
+
+
+def _set_ortho(v):
+    try:
+        Rhino.ApplicationSettings.ModelAidSettings.Ortho = bool(v)
+    except Exception as ex:
+        print("[OBERLEISTE] _set_ortho:", ex)
+
+
+def _set_grid_snap(v):
+    try:
+        Rhino.ApplicationSettings.ModelAidSettings.GridSnap = bool(v)
+    except Exception as ex:
+        print("[OBERLEISTE] _set_grid_snap:", ex)
+
+
+def _set_osnap_master(v):
+    """Master-Toggle fuer Object-Snap (alle aktiven Snaps)."""
+    try:
+        s = Rhino.ApplicationSettings.ModelAidSettings
+        if hasattr(s, "Osnap"):
+            s.Osnap = bool(v)
+        elif hasattr(s, "UsePoints"):
+            # Fallback: einzelne Modi durch
+            pass
+    except Exception as ex:
+        print("[OBERLEISTE] _set_osnap_master:", ex)
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class OberleisteBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "oberleiste")
+        self._idle_counter = 0
+        self._last_prompt = ""
+        self._last_state_sig = None      # Fingerprint des letzten Push — dedupe
+        self._cached_overrides = None    # (enabled, count) — invalidiert bei Toggle/Update
+        # Command-Liste einmalig laden (kann teuer sein -> cachen)
+        try:
+            self._all_commands = _list_all_command_names()
+        except Exception as ex:
+            print("[OBERLEISTE] command-enum:", ex)
+            self._all_commands = []
+
+    def _on_ready(self):
+        # Bootstrap DPI (gemeinsam mit massstab.py)
+        try: massstab._bootstrap_dpi()
+        except Exception: pass
+        # WebView wurde (neu) gemountet — Frontend-State ist leer, also one-shot
+        # Listen (displayModes, allCommands) neu mitsenden. Sonst zeigt das
+        # Display-Dropdown nach einem Re-Mount (z.B. Andocken, Layout-Wechsel)
+        # nur die "—"-Option und wirkt wie ein toter Button.
+        self._dm_sent = False
+        self._commands_sent = False
+        self._send_state(force=True)
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+
+        # --- Lifecycle --------------------------------------------------
+        if t == "READY":
+            self._on_ready()
+        elif t == "REQUEST_STATE":
+            self._send_state(force=True)
+
+        # --- Massstab (delegiert an massstab-Modul) ---------------------
+        elif t == "SET_SCALE":
+            doc, vp = massstab._active_vp()
+            try: ratio = float(p.get("ratio"))
+            except Exception: return
+            if ratio > 0 and massstab._apply_scale(doc, vp, ratio):
+                self._send_state(force=True)
+        elif t == "ZOOM_EXTENTS":
+            doc, vp = massstab._active_vp()
+            massstab._zoom_extents(doc, vp, selected_only=False)
+            self._send_state(force=True)
+        elif t == "ZOOM_SELECTION":
+            doc, vp = massstab._active_vp()
+            massstab._zoom_extents(doc, vp, selected_only=True)
+            self._send_state(force=True)
+        elif t == "SET_LINEWEIGHTS":
+            doc, _ = massstab._active_vp()
+            massstab._set_lineweights_enabled(doc, bool(p.get("enabled")))
+            self._send_state(force=True)
+        elif t == "SET_DPI":
+            doc, _ = massstab._active_vp()
+            massstab._set_dpi(doc, p.get("dpi"), source="manual")
+            self._send_state(force=True)
+        elif t == "DETECT_DPI":
+            massstab._force_redetect_dpi()
+            self._send_state(force=True)
+
+        # --- View-Switcher ----------------------------------------------
+        elif t == "SET_VIEW":
+            v = p.get("view")
+            if v in ("Top", "Front", "Right", "Perspective", "Left", "Back", "Bottom"):
+                _run("_-{} _Enter".format(v))
+                self._send_state(force=True)
+
+        # --- Display-Mode -----------------------------------------------
+        elif t == "SET_DISPLAY_MODE":
+            n = p.get("name")
+            if n:
+                _set_display_mode(n)
+                self._send_state(force=True)
+
+        # --- Snap-Toggles -----------------------------------------------
+        elif t == "TOGGLE_ORTHO":
+            _set_ortho(bool(p.get("enabled")))
+            self._send_state(force=True)
+        elif t == "TOGGLE_GRID_SNAP":
+            _set_grid_snap(bool(p.get("enabled")))
+            self._send_state(force=True)
+        elif t == "TOGGLE_OSNAP":
+            _set_osnap_master(bool(p.get("enabled")))
+            self._send_state(force=True)
+
+        # --- Graphical Overrides ----------------------------------------
+        elif t == "TOGGLE_OVERRIDES":
+            doc = Rhino.RhinoDoc.ActiveDoc
+            overrides.set_enabled(doc, bool(p.get("enabled")))
+            self._cached_overrides = None  # Cache invalidieren
+            self._send_state(force=True)
+        elif t == "SET_OVERRIDES_PRESET":
+            doc = Rhino.RhinoDoc.ActiveDoc
+            name = p.get("name") or None
+            overrides.set_active_preset(doc, name)
+            self._cached_overrides = None  # Cache invalidieren
+            self._send_state(force=True)
+            # OVERRIDES-Panel mit-informieren: dort haben sich die Rules
+            # geaendert (Preset wurde reingeladen).
+            try:
+                b = sc.sticky.get("overrides_bridge")
+                if b is not None:
+                    b._send_state()
+            except Exception as ex:
+                print("[OBERLEISTE] notify overrides:", ex)
+        elif t == "SAVE_OVERRIDES_PRESET":
+            # Quick-Save direkt aus der Topbar: aktuelle Doc-Rules unter
+            # gegebenem Namen ablegen und sofort als activePreset markieren.
+            # Spart dem User den Umweg ueber den grossen OVERRIDES-Editor.
+            doc = Rhino.RhinoDoc.ActiveDoc
+            name = (p.get("name") or "").strip()
+            if not name:
+                pass
+            else:
+                cfg = overrides.load_config(doc)
+                rules = cfg.get("rules") or []
+                if overrides.save_preset(name, rules):
+                    overrides.set_active_preset(doc, name)
+            self._cached_overrides = None
+            self._send_state(force=True)
+            try:
+                b = sc.sticky.get("overrides_bridge")
+                if b is not None:
+                    b._send_state()
+            except Exception as ex:
+                print("[OBERLEISTE] notify overrides:", ex)
+        elif t == "OPEN_OVERRIDES_PANEL":
+            try:
+                import System
+                import Rhino.UI as RhinoUI
+                RhinoUI.Panels.OpenPanel(System.Guid(OVERRIDES_PANEL_GUID_STR))
+            except Exception as ex:
+                print("[OBERLEISTE] OpenPanel Overrides:", ex)
+
+        # --- Command-Line Integration -----------------------------------
+        elif t == "RUN_COMMAND":
+            cmd = (p.get("cmd") or "").strip()
+            if cmd:
+                # Auto-Praefix mit "_" falls nicht vorhanden, damit auch
+                # lokalisierte Rhino-Installationen die EN-Namen verstehen.
+                if not (cmd.startswith("_") or cmd.startswith("'")):
+                    cmd = "_" + cmd
+                try:
+                    # WICHTIG: Mac Rhinos Command-Bar sammelt parallel
+                    # User-Keystrokes (globaler Keyhook). Wenn unsere React-
+                    # Eingabe tippt landet die da auch. ESC clearen sonst
+                    # haben wir doppelten Text und braucht 2x Enter.
+                    Rhino.RhinoApp.SendKeystrokes("\x1b", False)
+                    Rhino.RhinoApp.RunScript(cmd, False)
+                except Exception as ex:
+                    print("[OBERLEISTE] RunScript-Fehler:", ex)
+        elif t == "SEND_KEYS":
+            text = p.get("text") or ""
+            append_enter = bool(p.get("enter", True))
+            try:
+                # Ebenfalls Buffer zuerst leeren wenn User parallel mitgetippt hat
+                if text:
+                    Rhino.RhinoApp.SendKeystrokes("\x1b", False)
+                Rhino.RhinoApp.SendKeystrokes(text, append_enter)
+            except Exception as ex:
+                print("[OBERLEISTE] SendKeystrokes-Fehler:", ex)
+        elif t == "CANCEL_COMMAND":
+            try:
+                # Doppel-ESC: einmal um Eingabe-Buffer zu clearen, einmal um
+                # aktiven Befehl abzubrechen
+                Rhino.RhinoApp.SendKeystrokes("\x1b", False)
+                Rhino.RhinoApp.SendKeystrokes("\x1b", False)
+            except Exception:
+                pass
+        elif t == "TOGGLE_RHINO_CMD_LINE":
+            # Versucht Rhinos eigene Befehlszeile/History zu togglen.
+            # Mehrere Wege probieren — je nach Version greift einer.
+            for c in (
+                "_-CommandPrompt _Hide _Enter",
+                "_CommandHistory _Toggle _Enter",
+                "_-Toolbar _Hide _Commands _Enter",
+            ):
+                try:
+                    Rhino.RhinoApp.RunScript(c, False)
+                except Exception:
+                    pass
+
+    def _send_state(self, force=False):
+        doc, vp = massstab._active_vp()
+        info = massstab._compute_scale(doc, vp)
+        # Massstab-State (Scale, Print-Toggle, DPI)
+        info["viewMode"]      = _get_active_viewport_name()
+        info["displayMode"]   = _get_active_display_mode_name()
+        # displayModes-Liste nur einmal initial mitsenden — aendert sich kaum
+        if not getattr(self, "_dm_sent", False):
+            info["displayModes"] = _list_display_modes()
+            self._dm_sent = True
+        # Snap-State
+        info.update(_get_snap_state())
+        # Overrides-State — cached, invalidiert bei TOGGLE_OVERRIDES und
+        # SET_OVERRIDES_PRESET. Bei manuellen Aenderungen via OVERRIDES-Panel
+        # bleibt der Cache stale bis zum naechsten Toggle — pragmatischer
+        # Trade-off, weil die beiden Bridges nicht direkt voneinander wissen.
+        if self._cached_overrides is None:
+            try:
+                cfg = overrides.load_config(doc)
+                presets = [item.get("name") for item in overrides.list_presets() if item.get("name")]
+                self._cached_overrides = (
+                    bool(cfg.get("enabled")),
+                    len(cfg.get("rules") or []),
+                    cfg.get("activePreset"),
+                    tuple(presets),
+                )
+            except Exception:
+                self._cached_overrides = (False, 0, None, ())
+        (info["overridesEnabled"],
+         info["overridesCount"],
+         info["overridesActivePreset"],
+         _presets_tuple) = self._cached_overrides
+        info["overridesPresets"] = list(_presets_tuple)
+        # Command-Line State
+        prompt = _get_command_prompt()
+        info["cmdPrompt"]  = prompt
+        info["cmdOptions"] = _parse_command_options(prompt)
+        # Command-Autocomplete-Liste — nur einmal initial schicken (gross)
+        if not getattr(self, "_commands_sent", False):
+            info["allCommands"] = self._all_commands
+            self._commands_sent = True
+            force = True  # Erste Push immer feuern
+        # Diff-Check: wenn weder Daten noch force, gar nichts schicken
+        # (dedupe Idle-Ticks ohne Aenderung — spart WebView-ExecuteScript Roundtrip)
+        sig = (
+            info.get("scale"),
+            info.get("appliedScale"),
+            info.get("parallel"),
+            info.get("viewMode"),
+            info.get("displayMode"),
+            info.get("ortho"), info.get("gridSnap"), info.get("osnap"),
+            info.get("showLineweights"),
+            info["overridesEnabled"], info["overridesCount"],
+            info.get("overridesActivePreset"),
+            tuple(info.get("overridesPresets") or ()),
+            prompt,
+        )
+        if not force and sig == self._last_state_sig:
+            return
+        self._last_state_sig = sig
+        self.send("STATE", info)
+
+    def tick_idle(self):
+        # Command-Prompt aendert sich oft schnell -> separater Pfad: wenn sich
+        # der Prompt seit letztem Tick geaendert hat, sofort pushen (ungedrosselt).
+        cur_prompt = _get_command_prompt()
+        if cur_prompt != self._last_prompt:
+            self._last_prompt = cur_prompt
+            self._send_state(force=True)
+            self._idle_counter = 0
+            return
+        # Sonst: normaler throttle fuer den restlichen State
+        self._idle_counter += 1
+        if self._idle_counter < massstab._IDLE_THROTTLE:
+            return
+        self._idle_counter = 0
+        self._send_state(force=False)
+
+
+# --- Listener-Hookup --------------------------------------------------------
+
+def _install_listeners(bridge):
+    flag = "oberleiste_listeners"
+    sc.sticky["oberleiste_bridge"] = bridge
+    if sc.sticky.get(flag):
+        return
+
+    def on_idle(s, e):
+        b = sc.sticky.get("oberleiste_bridge")
+        if b is not None:
+            try: b.tick_idle()
+            except Exception: pass
+
+    def on_view_change(*args):
+        b = sc.sticky.get("oberleiste_bridge")
+        if b is not None:
+            try: b._send_state(force=True)
+            except Exception: pass
+
+    Rhino.RhinoApp.Idle += on_idle
+    Rhino.RhinoDoc.ActiveDocumentChanged += on_view_change
+    sc.sticky[flag] = True
+    print("[OBERLEISTE] Listener aktiv")
+
+
+def _bridge_factory():
+    b = OberleisteBridge()
+    _install_listeners(b)
+    return b
+
+
+panel_base.register_and_open("oberleiste", "OBERLEISTE", PANEL_GUID_STR, _bridge_factory,
+                             icon_spec=("O", "#2f5d54"))
diff --git a/rhino/overrides.py b/rhino/overrides.py
new file mode 100644
index 0000000..62904ea
--- /dev/null
+++ b/rhino/overrides.py
@@ -0,0 +1,718 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+overrides.py
+Engine fuer regelbasierte grafische Overrides (ArchiCAD Graphical Overrides /
+Vectorworks Datenvisualisierung).
+
+Datenmodell (gespeichert als JSON in doc.Strings["dossier_overrides"]):
+
+  {
+    "enabled": true,
+    "rules": [
+      {
+        "id":      "rule_abc",
+        "name":    "Bestand grau",
+        "enabled": true,
+        "condition": {
+          "type":     "layer_name" | "user_string" | "object_name",
+          "operator": "equals" | "contains" | "starts_with" | "not_equals",
+          "value":    "WAND_BESTAND",
+          "key":      "brandschutz"        # nur fuer user_string
+        },
+        "actions": {
+          "color":      "#888888" or null,
+          "lineweight": 0.25     or null,
+          "linetype":   "Dashed" or null
+        }
+      },
+      ...   (oberste Regel hat hoechste Prioritaet)
+    ]
+  }
+
+Verhalten:
+- Mehrere Regeln matchen additiv: Actions aller passenden Regeln werden
+  kombiniert. Bei Konflikt fuer die selbe Property gewinnt die in der
+  Liste WEITER OBEN stehende Regel.
+- Originalwerte werden in UserStrings pro Objekt gesichert -> reversibel.
+- Engine wird via apply_all(doc) / restore_all(doc) gesteuert.
+"""
+import os
+import sys
+import json
+import Rhino
+import System
+import System.Drawing as Drawing
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+_STORE_KEY = "dossier_overrides"
+
+# Globale Presets (cross-doc) — Datei im User-Home
+_PRESETS_DIR  = os.path.expanduser("~/Library/Application Support/RhinoPanel")
+_PRESETS_PATH = os.path.join(_PRESETS_DIR, "override_presets.json")
+
+# UserString-Keys fuer Original-Backups (pro Objekt)
+_ORIG_COLOR_SRC = "dossier_or_csrc"
+_ORIG_COLOR     = "dossier_or_color"
+_ORIG_LW_SRC    = "dossier_or_lwsrc"
+_ORIG_LW        = "dossier_or_lw"
+_ORIG_LT_SRC    = "dossier_or_ltsrc"
+_ORIG_LT        = "dossier_or_lt"
+_OVERRIDDEN     = "dossier_or_done"  # "1" wenn Object aktuell overridden ist
+
+# Hatch-Override: Originalwerte werden auf dem Hatch-Objekt selbst gespeichert.
+# Link Curve -> Hatch nutzt den FILL_KEY den gestaltung.py setzt.
+_GEST_FILL_KEY  = "ebenen_fill_hatch_id"   # auf Curve
+_ORIG_HP        = "dossier_or_hatch_pidx"    # auf Hatch — original PatternIndex
+_ORIG_HS        = "dossier_or_hatch_scale"   # auf Hatch — original PatternScale
+_HATCH_OVERRIDDEN = "dossier_or_hatch_done"  # "1" wenn Hatch aktuell overridden
+
+_FROM_LAYER   = Rhino.DocObjects.ObjectColorSource.ColorFromLayer
+_FROM_OBJECT  = Rhino.DocObjects.ObjectColorSource.ColorFromObject
+_LW_FROM_LAY  = Rhino.DocObjects.ObjectPlotWeightSource.PlotWeightFromLayer
+_LW_FROM_OBJ  = Rhino.DocObjects.ObjectPlotWeightSource.PlotWeightFromObject
+_LT_FROM_LAY  = Rhino.DocObjects.ObjectLinetypeSource.LinetypeFromLayer
+_LT_FROM_OBJ  = Rhino.DocObjects.ObjectLinetypeSource.LinetypeFromObject
+
+
+# --- Daten lesen/schreiben --------------------------------------------------
+
+def load_config(doc):
+    if doc is None:
+        return {"enabled": False, "rules": []}
+    try:
+        raw = doc.Strings.GetValue(_STORE_KEY)
+        if not raw:
+            return {"enabled": False, "rules": []}
+        data = json.loads(raw)
+        if not isinstance(data, dict):
+            return {"enabled": False, "rules": []}
+        data.setdefault("enabled", False)
+        data.setdefault("rules", [])
+        return data
+    except Exception as ex:
+        print("[OVERRIDES] load_config:", ex)
+        return {"enabled": False, "rules": []}
+
+
+def save_config(doc, cfg):
+    if doc is None: return
+    try:
+        doc.Strings.SetString(_STORE_KEY, json.dumps(cfg, ensure_ascii=False))
+    except Exception as ex:
+        print("[OVERRIDES] save_config:", ex)
+
+
+# --- Presets (global, cross-doc) -------------------------------------------
+
+def _read_presets_file():
+    try:
+        if os.path.isfile(_PRESETS_PATH):
+            with open(_PRESETS_PATH, "rb") as f:
+                data = json.loads(f.read().decode("utf-8"))
+                if isinstance(data, list):
+                    return data
+                # Migration: alte dict-Form -> list
+                if isinstance(data, dict) and "presets" in data:
+                    return data.get("presets") or []
+    except Exception as ex:
+        print("[OVERRIDES] read_presets:", ex)
+    return []
+
+
+def _write_presets_file(presets):
+    try:
+        if not os.path.isdir(_PRESETS_DIR):
+            os.makedirs(_PRESETS_DIR)
+        with open(_PRESETS_PATH, "wb") as f:
+            f.write(json.dumps(presets or [], ensure_ascii=False, indent=2).encode("utf-8"))
+        return True
+    except Exception as ex:
+        print("[OVERRIDES] write_presets:", ex)
+        return False
+
+
+def list_presets():
+    """Liefert Liste von {name, ruleCount}."""
+    out = []
+    for p in _read_presets_file():
+        if not isinstance(p, dict): continue
+        out.append({
+            "name":      p.get("name", "(ohne Name)"),
+            "ruleCount": len(p.get("rules") or []),
+        })
+    return out
+
+
+def save_preset(name, rules):
+    """Speichert/ueberschreibt Preset mit gegebenem Namen."""
+    if not name or not isinstance(name, str): return False
+    name = name.strip()
+    if not name: return False
+    presets = _read_presets_file()
+    # Existierendes Preset mit gleichem Namen ersetzen
+    for i, p in enumerate(presets):
+        if isinstance(p, dict) and p.get("name") == name:
+            presets[i] = {"name": name, "rules": rules or []}
+            return _write_presets_file(presets)
+    # Sonst anhaengen
+    presets.append({"name": name, "rules": rules or []})
+    return _write_presets_file(presets)
+
+
+def load_preset(name):
+    """Liefert die Rules-Liste eines Presets oder None."""
+    for p in _read_presets_file():
+        if isinstance(p, dict) and p.get("name") == name:
+            # Deep-Copy via JSON damit der Aufrufer keine Datei-Daten teilt
+            return json.loads(json.dumps(p.get("rules") or []))
+    return None
+
+
+def delete_preset(name):
+    presets = _read_presets_file()
+    new = [p for p in presets if not (isinstance(p, dict) and p.get("name") == name)]
+    if len(new) == len(presets): return False
+    return _write_presets_file(new)
+
+
+def set_active_preset(doc, name):
+    """Aktiviert ein gespeichertes Preset: kopiert dessen Rules ins Doc-Config
+    und markiert es als activePreset. Wenn name leer/None: aktives Preset
+    geclear-t, Rules bleiben unveraendert (User waehlt "kein Preset"). Bei
+    aktivem enabled-Flag wird sofort neu angewendet. True bei Erfolg."""
+    if doc is None: return False
+    cfg = load_config(doc)
+    if name:
+        rules = load_preset(name)
+        if rules is None:
+            return False
+        cfg["rules"] = rules
+        cfg["activePreset"] = name
+    else:
+        cfg["activePreset"] = None
+    save_config(doc, cfg)
+    if cfg.get("enabled"):
+        # Erst restore (alte Overrides zuruecknehmen), dann apply mit neuen Rules.
+        restore_all(doc)
+        apply_all(doc)
+    return True
+
+
+def get_active_preset(doc):
+    """Aktuell aktives Preset-Namen oder None."""
+    if doc is None: return None
+    return load_config(doc).get("activePreset")
+
+
+# --- Helpers ----------------------------------------------------------------
+
+def _color_to_hex(c):
+    if c is None: return None
+    try:
+        return "#{:02x}{:02x}{:02x}".format(int(c.R), int(c.G), int(c.B))
+    except Exception:
+        return None
+
+
+def _hex_to_color(h):
+    if not isinstance(h, str): return Drawing.Color.FromArgb(136, 136, 136)
+    h = h.strip()
+    if h.startswith("#"): h = h[1:]
+    if len(h) != 6:
+        return Drawing.Color.FromArgb(136, 136, 136)
+    try:
+        return Drawing.Color.FromArgb(int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16))
+    except Exception:
+        return Drawing.Color.FromArgb(136, 136, 136)
+
+
+def _layer_name_for(doc, obj):
+    try:
+        idx = obj.Attributes.LayerIndex
+        if 0 <= idx < doc.Layers.Count:
+            return doc.Layers[idx].Name or ""
+    except Exception:
+        pass
+    return ""
+
+
+def _layer_full_path_for(doc, obj):
+    try:
+        idx = obj.Attributes.LayerIndex
+        if 0 <= idx < doc.Layers.Count:
+            return doc.Layers[idx].FullPath or ""
+    except Exception:
+        pass
+    return ""
+
+
+def _user_string_for(obj, key):
+    try:
+        v = obj.Attributes.GetUserString(key)
+        return v if v is not None else ""
+    except Exception:
+        return ""
+
+
+def _object_name_for(obj):
+    try:
+        return obj.Attributes.Name or ""
+    except Exception:
+        return ""
+
+
+def _compare(actual, op, expected):
+    actual = actual if actual is not None else ""
+    expected = expected if expected is not None else ""
+    if op == "equals":      return str(actual) == str(expected)
+    if op == "not_equals":  return str(actual) != str(expected)
+    if op == "contains":    return str(expected) in str(actual)
+    if op == "starts_with": return str(actual).startswith(str(expected))
+    if op == "ends_with":   return str(actual).endswith(str(expected))
+    return False
+
+
+def _match_leaf(doc, obj, condition):
+    """Evaluates a single leaf condition (layer_name / user_string / object_name)."""
+    if not isinstance(condition, dict): return False
+    t  = condition.get("type")
+    op = condition.get("operator") or "equals"
+    v  = condition.get("value")
+    if t == "layer_name":
+        return _compare(_layer_name_for(doc, obj), op, v) or \
+               _compare(_layer_full_path_for(doc, obj), op, v)
+    if t == "user_string":
+        return _compare(_user_string_for(obj, condition.get("key", "")), op, v)
+    if t == "object_name":
+        return _compare(_object_name_for(obj), op, v)
+    return False
+
+
+def _match_rule(doc, obj, rule):
+    """Evaluates rule. Unterstuetzt zwei Formate:
+      - Legacy: rule.condition = {single leaf}
+      - Neu:    rule.conditions = [leaf, leaf, ...] + rule.conditionsLogic = "and" | "or"
+    """
+    # Neue Form (Liste)
+    conds = rule.get("conditions")
+    if isinstance(conds, list) and conds:
+        logic = (rule.get("conditionsLogic") or "and").lower()
+        if logic == "or":
+            for c in conds:
+                if _match_leaf(doc, obj, c):
+                    return True
+            return False
+        # default: and
+        for c in conds:
+            if not _match_leaf(doc, obj, c):
+                return False
+        return True
+    # Legacy single condition
+    return _match_leaf(doc, obj, rule.get("condition") or {})
+
+
+# --- Apply / Restore --------------------------------------------------------
+
+def _backup_original(attrs):
+    """Sichert originale Attribute in UserStrings (nur beim ersten Mal)."""
+    if attrs.GetUserString(_OVERRIDDEN) == "1":
+        return  # bereits gesichert
+    try:
+        attrs.SetUserString(_ORIG_COLOR_SRC, str(int(attrs.ColorSource)))
+        c_hex = _color_to_hex(attrs.ObjectColor) or "#888888"
+        attrs.SetUserString(_ORIG_COLOR, c_hex)
+        attrs.SetUserString(_ORIG_LW_SRC, str(int(attrs.PlotWeightSource)))
+        attrs.SetUserString(_ORIG_LW, "{:.6f}".format(float(attrs.PlotWeight or 0)))
+        attrs.SetUserString(_ORIG_LT_SRC, str(int(attrs.LinetypeSource)))
+        attrs.SetUserString(_ORIG_LT, str(int(attrs.LinetypeIndex)))
+        attrs.SetUserString(_OVERRIDDEN, "1")
+    except Exception as ex:
+        print("[OVERRIDES] _backup_original:", ex)
+
+
+def _restore_original(doc, obj):
+    """Stellt urspruengliche Attribute aus UserStrings wieder her.
+    Beinhaltet auch das Restoring eines ggf. ueberschriebenen Hatches."""
+    a = obj.Attributes
+    # Hatch separat zuruecksetzen — kann auch ohne Curve-Override
+    # passiert sein (z.B. wenn Override nur den Pattern aendert)
+    _restore_hatch(doc, obj)
+    if a.GetUserString(_OVERRIDDEN) != "1":
+        return False
+    try:
+        new_a = a.Duplicate()
+        cs = a.GetUserString(_ORIG_COLOR_SRC)
+        if cs:
+            new_a.ColorSource = Rhino.DocObjects.ObjectColorSource(int(cs))
+        c  = a.GetUserString(_ORIG_COLOR)
+        if c:
+            new_a.ObjectColor = _hex_to_color(c)
+        lws = a.GetUserString(_ORIG_LW_SRC)
+        if lws:
+            new_a.PlotWeightSource = Rhino.DocObjects.ObjectPlotWeightSource(int(lws))
+        lw = a.GetUserString(_ORIG_LW)
+        if lw:
+            try: new_a.PlotWeight = float(lw)
+            except Exception: pass
+        lts = a.GetUserString(_ORIG_LT_SRC)
+        if lts:
+            new_a.LinetypeSource = Rhino.DocObjects.ObjectLinetypeSource(int(lts))
+        lt = a.GetUserString(_ORIG_LT)
+        if lt:
+            try: new_a.LinetypeIndex = int(lt)
+            except Exception: pass
+        # Backup-Marker entfernen
+        for k in (_ORIG_COLOR_SRC, _ORIG_COLOR, _ORIG_LW_SRC, _ORIG_LW,
+                  _ORIG_LT_SRC, _ORIG_LT, _OVERRIDDEN):
+            new_a.SetUserString(k, "")
+        doc.Objects.ModifyAttributes(obj, new_a, True)
+        return True
+    except Exception as ex:
+        print("[OVERRIDES] _restore_original:", ex)
+        return False
+
+
+def _compose_overrides(doc, obj, rules):
+    """Sammelt Actions aller matchenden Regeln. Bei Konflikten gewinnt die
+    Regel die WEITER OBEN in der Liste steht (= niedrigerer Index)."""
+    composed = {}
+    for rule in rules:
+        if not rule.get("enabled", True): continue
+        if not _match_rule(doc, obj, rule): continue
+        for prop, val in (rule.get("actions") or {}).items():
+            if val is None or val == "": continue
+            if prop not in composed:
+                composed[prop] = val
+    return composed
+
+
+def _find_linked_hatch(doc, curve_obj):
+    """Findet den via gestaltung verlinkten Hatch zur Curve (oder None)."""
+    try:
+        hid_s = curve_obj.Attributes.GetUserString(_GEST_FILL_KEY)
+        if not hid_s: return None
+        h = doc.Objects.FindId(System.Guid(hid_s))
+        if h is None or h.IsDeleted: return None
+        return h
+    except Exception:
+        return None
+
+
+def _apply_hatch_override(doc, curve_obj, pattern_name, scale_val):
+    """Modifiziert den verlinkten Hatch der Curve. Original wird auf dem
+    Hatch in UserStrings gesichert. Liefert True bei Aenderung.
+
+    Wenn keine Hatch existiert: stiller No-op (User soll erst via Gestaltung
+    eine Basis-Hatch anlegen — Overrides modifizieren, erzeugen nicht)."""
+    h = _find_linked_hatch(doc, curve_obj)
+    if h is None: return False
+    try:
+        hg = h.Geometry
+        ha = h.Attributes
+        # Backup einmalig sichern
+        if ha.GetUserString(_HATCH_OVERRIDDEN) != "1":
+            try:
+                ha.SetUserString(_ORIG_HP, str(int(hg.PatternIndex)))
+                ha.SetUserString(_ORIG_HS, "{:.6f}".format(float(hg.PatternScale)))
+                ha.SetUserString(_HATCH_OVERRIDDEN, "1")
+                doc.Objects.ModifyAttributes(h, ha, True)
+            except Exception as ex:
+                print("[OVERRIDES] hatch backup:", ex)
+        # Pattern wechseln (Geometrie neu erzeugen — PatternIndex ist read-only)
+        new_pidx = hg.PatternIndex
+        if pattern_name:
+            try:
+                idx = doc.HatchPatterns.Find(pattern_name, True)
+                if idx >= 0:
+                    new_pidx = idx
+            except Exception: pass
+        new_scale = float(scale_val) if scale_val else float(hg.PatternScale)
+        try:
+            # Hatch-Geometrie neu instanzieren (PatternIndex/Scale aendern direkt)
+            new_hg = hg.Duplicate()
+            try:
+                new_hg.PatternIndex = new_pidx
+            except Exception: pass
+            try:
+                new_hg.PatternScale = new_scale
+            except Exception: pass
+            doc.Objects.Replace(h.Id, new_hg)
+            return True
+        except Exception as ex:
+            print("[OVERRIDES] hatch replace:", ex)
+        return False
+    except Exception as ex:
+        print("[OVERRIDES] _apply_hatch_override:", ex)
+        return False
+
+
+def _restore_hatch(doc, curve_obj):
+    """Stellt Hatch-Pattern und -Scale aus dem Backup wieder her."""
+    h = _find_linked_hatch(doc, curve_obj)
+    if h is None: return False
+    a = h.Attributes
+    if a.GetUserString(_HATCH_OVERRIDDEN) != "1": return False
+    try:
+        orig_pidx_s  = a.GetUserString(_ORIG_HP)
+        orig_scale_s = a.GetUserString(_ORIG_HS)
+        hg = h.Geometry.Duplicate()
+        if orig_pidx_s:
+            try: hg.PatternIndex = int(orig_pidx_s)
+            except Exception: pass
+        if orig_scale_s:
+            try: hg.PatternScale = float(orig_scale_s)
+            except Exception: pass
+        doc.Objects.Replace(h.Id, hg)
+        # Backup-Marker entfernen
+        h2 = doc.Objects.FindId(h.Id)
+        if h2 is not None:
+            new_a = h2.Attributes.Duplicate()
+            for k in (_ORIG_HP, _ORIG_HS, _HATCH_OVERRIDDEN):
+                new_a.SetUserString(k, "")
+            doc.Objects.ModifyAttributes(h2, new_a, True)
+        return True
+    except Exception as ex:
+        print("[OVERRIDES] _restore_hatch:", ex)
+        return False
+
+
+def _apply_to_object(doc, obj, overrides):
+    """Setzt die Override-Werte am Objekt. Sichert vorher Originale."""
+    if not overrides: return False
+    a = obj.Attributes
+    _backup_original(a)
+    new_a = a.Duplicate()
+    changed = False
+    if "color" in overrides:
+        col = _hex_to_color(overrides["color"])
+        new_a.ColorSource = _FROM_OBJECT
+        new_a.ObjectColor = col
+        # Plot-Color mitspiegeln (sonst druckt's wieder in Layerfarbe)
+        try:
+            new_a.PlotColorSource = Rhino.DocObjects.ObjectPlotColorSource.PlotColorFromObject
+            new_a.PlotColor = col
+        except Exception: pass
+        changed = True
+    if "lineweight" in overrides:
+        try:
+            new_a.PlotWeightSource = _LW_FROM_OBJ
+            new_a.PlotWeight = float(overrides["lineweight"])
+            changed = True
+        except Exception: pass
+    if "linetype" in overrides:
+        try:
+            idx = doc.Linetypes.Find(overrides["linetype"], True)
+            if idx >= 0:
+                new_a.LinetypeSource = _LT_FROM_OBJ
+                new_a.LinetypeIndex = idx
+                changed = True
+        except Exception: pass
+    if changed:
+        try:
+            doc.Objects.ModifyAttributes(obj, new_a, True)
+        except Exception as ex:
+            print("[OVERRIDES] apply ModifyAttributes:", ex)
+    # Hatch-Override (separater Pfad, modifiziert das verlinkte Hatch)
+    if "hatchPattern" in overrides or "hatchScale" in overrides:
+        if _apply_hatch_override(doc, obj,
+                                 overrides.get("hatchPattern"),
+                                 overrides.get("hatchScale")):
+            changed = True
+    return changed
+
+
+def apply_all(doc):
+    """Wendet alle aktiven Regeln auf alle Objekte im Doc an.
+    Objekte die NICHT (mehr) matchen werden auf Originale zurueckgesetzt."""
+    if doc is None: return 0, 0
+    cfg = load_config(doc)
+    if not cfg.get("enabled"): return 0, 0
+    rules = cfg.get("rules") or []
+    if not rules: return 0, 0
+    n_applied = 0
+    n_restored = 0
+    _set_applying(True)
+    try:
+        for obj in doc.Objects:
+            if obj is None or obj.IsDeleted: continue
+            ovs = _compose_overrides(doc, obj, rules)
+            if ovs:
+                if _apply_to_object(doc, obj, ovs):
+                    n_applied += 1
+            else:
+                # Kein Match aber war evtl. vorher overridden -> restore
+                if obj.Attributes.GetUserString(_OVERRIDDEN) == "1":
+                    if _restore_original(doc, obj):
+                        n_restored += 1
+        try: doc.Views.Redraw()
+        except Exception: pass
+        print("[OVERRIDES] apply_all: {} applied, {} restored".format(n_applied, n_restored))
+    except Exception as ex:
+        print("[OVERRIDES] apply_all:", ex)
+    finally:
+        _set_applying(False)
+    return n_applied, n_restored
+
+
+def restore_all(doc):
+    """Stellt alle Originale wieder her (Overrides aus)."""
+    if doc is None: return 0
+    n = 0
+    _set_applying(True)
+    try:
+        for obj in doc.Objects:
+            if obj is None or obj.IsDeleted: continue
+            had_attr_override = (obj.Attributes.GetUserString(_OVERRIDDEN) == "1")
+            # _restore_original kuemmert sich auch um den verlinkten Hatch —
+            # auch wenn die Curve selbst keinen Attribut-Override hatte.
+            if had_attr_override:
+                if _restore_original(doc, obj):
+                    n += 1
+            else:
+                # Vielleicht nur Hatch-Override
+                if _restore_hatch(doc, obj):
+                    n += 1
+        try: doc.Views.Redraw()
+        except Exception: pass
+        print("[OVERRIDES] restore_all: {} Objekte".format(n))
+    except Exception as ex:
+        print("[OVERRIDES] restore_all:", ex)
+    finally:
+        _set_applying(False)
+    return n
+
+
+def set_enabled(doc, enabled):
+    """Master-Toggle: an -> apply_all, aus -> restore_all + Config-Flag setzen."""
+    cfg = load_config(doc)
+    cfg["enabled"] = bool(enabled)
+    save_config(doc, cfg)
+    if enabled:
+        apply_all(doc)
+    else:
+        restore_all(doc)
+
+
+def update_rules(doc, rules, enabled=None):
+    """Schreibt eine neue Regel-Liste. Wenn enabled vorher an war, wird
+    nach dem Speichern apply_all (mit Restore-cleanup) ausgefuehrt.
+    Manuelle Aenderungen an den Rules clearen den activePreset — sonst
+    behauptet das Topbar-Dropdown weiter, das alte Preset sei aktiv obwohl
+    die Rules davon driften (Variante C: Preset ist read-only Snapshot)."""
+    cfg = load_config(doc)
+    if enabled is not None:
+        cfg["enabled"] = bool(enabled)
+    cfg["rules"] = rules or []
+    cfg["activePreset"] = None
+    save_config(doc, cfg)
+    if cfg.get("enabled"):
+        # Erst alles zuruecksetzen, dann neu anwenden — sonst koennten alte
+        # Overrides "kleben" wenn die neue Regelmenge sie nicht mehr enthaelt.
+        restore_all(doc)
+        apply_all(doc)
+
+
+# --- Live-Update via Doc-Events --------------------------------------------
+
+def _is_applying():
+    return bool(sc.sticky.get("overrides_applying"))
+
+
+def _set_applying(v):
+    sc.sticky["overrides_applying"] = bool(v)
+
+
+def _apply_to_single_object(doc, obj):
+    """Re-evaluate Overrides fuer ein einzelnes Objekt. Aufgerufen von den
+    Event-Handlern bei neu/geaenderten Objekten."""
+    if doc is None or obj is None: return
+    cfg = load_config(doc)
+    if not cfg.get("enabled"): return
+    rules = cfg.get("rules") or []
+    if not rules:
+        # Engine aus oder keine Regeln -> wenn vorher overridden, restore
+        try:
+            if obj.Attributes.GetUserString(_OVERRIDDEN) == "1":
+                _restore_original(doc, obj)
+        except Exception: pass
+        return
+    try:
+        ovs = _compose_overrides(doc, obj, rules)
+        if ovs:
+            _apply_to_object(doc, obj, ovs)
+        elif obj.Attributes.GetUserString(_OVERRIDDEN) == "1":
+            _restore_original(doc, obj)
+    except Exception as ex:
+        print("[OVERRIDES] live single-apply:", ex)
+
+
+def install_listeners():
+    """Hookt einmalig Rhino-Events fuer Live-Update.
+    Idempotent via sticky-Flag."""
+    if sc.sticky.get("overrides_listeners"):
+        return
+
+    def on_add(s, e):
+        if _is_applying(): return
+        try:
+            doc = getattr(e, "TheDoc", None) or Rhino.RhinoDoc.ActiveDoc
+            obj = getattr(e, "TheObject", None)
+            if not obj or not doc: return
+            _set_applying(True)
+            try:
+                _apply_to_single_object(doc, obj)
+            finally:
+                _set_applying(False)
+        except Exception as ex:
+            print("[OVERRIDES] on_add:", ex)
+            _set_applying(False)
+
+    def on_replace(s, e):
+        # Wird auch von ModifyAttributes gefeuert -> Guard
+        if _is_applying(): return
+        try:
+            doc = getattr(e, "TheDoc", None) or Rhino.RhinoDoc.ActiveDoc
+            obj = getattr(e, "NewRhinoObject", None) or getattr(e, "TheObject", None)
+            if not obj or not doc: return
+            _set_applying(True)
+            try:
+                _apply_to_single_object(doc, obj)
+            finally:
+                _set_applying(False)
+        except Exception as ex:
+            print("[OVERRIDES] on_replace:", ex)
+            _set_applying(False)
+
+    def on_layer_table(s, e):
+        # Layer geaendert (Name, Properties, ...) — Regeln mit layer_name
+        # koennten andere Matches haben. Vollstaendiges Reapply.
+        if _is_applying(): return
+        try:
+            doc = getattr(e, "Document", None) or Rhino.RhinoDoc.ActiveDoc
+            cfg = load_config(doc)
+            if not cfg.get("enabled"): return
+            _set_applying(True)
+            try:
+                restore_all(doc)
+                apply_all(doc)
+            finally:
+                _set_applying(False)
+        except Exception as ex:
+            print("[OVERRIDES] on_layer_table:", ex)
+            _set_applying(False)
+
+    try:
+        Rhino.RhinoDoc.AddRhinoObject     += on_add
+        Rhino.RhinoDoc.ReplaceRhinoObject += on_replace
+        Rhino.RhinoDoc.LayerTableEvent    += on_layer_table
+    except Exception as ex:
+        print("[OVERRIDES] install_listeners:", ex)
+        return
+
+    sc.sticky["overrides_listeners"] = True
+    print("[OVERRIDES] Live-Update Listener aktiv (Add/Replace/LayerTable)")
diff --git a/rhino/overrides_panel.py b/rhino/overrides_panel.py
new file mode 100644
index 0000000..9592b5e
--- /dev/null
+++ b/rhino/overrides_panel.py
@@ -0,0 +1,226 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+overrides_panel.py
+OVERRIDES-Panel: Rule-Editor fuer grafische Overrides.
+Liest/schreibt rhino/overrides.py-Engine.
+"""
+import os
+import sys
+import uuid
+import Rhino
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+import overrides
+
+PANEL_GUID_STR = "8f2a7b6c-9f3a-4f4d-e6f7-08192a3c4d62"
+
+
+def _list_layer_names(doc):
+    out = []
+    try:
+        for layer in doc.Layers:
+            if layer is None or layer.IsDeleted: continue
+            try:
+                out.append({"name": layer.Name, "fullPath": layer.FullPath or layer.Name})
+            except Exception:
+                pass
+    except Exception:
+        pass
+    return out
+
+
+def _list_linetypes(doc):
+    out = []
+    try:
+        for lt in doc.Linetypes:
+            try:
+                if lt.Name and not lt.IsDeleted:
+                    out.append(lt.Name)
+            except Exception:
+                pass
+    except Exception:
+        pass
+    return out
+
+
+def _list_hatch_patterns(doc):
+    out = []
+    try:
+        for i in range(doc.HatchPatterns.Count):
+            try:
+                hp = doc.HatchPatterns[i]
+                if hp and hp.Name:
+                    out.append(hp.Name)
+            except Exception:
+                pass
+    except Exception:
+        pass
+    return out
+
+
+def _payload(doc):
+    cfg = overrides.load_config(doc)
+    return {
+        "enabled":       bool(cfg.get("enabled")),
+        "rules":         cfg.get("rules") or [],
+        "layers":        _list_layer_names(doc),
+        "linetypes":     _list_linetypes(doc),
+        "hatchPatterns": _list_hatch_patterns(doc),
+        "presets":       overrides.list_presets(),
+        "activePreset":  cfg.get("activePreset"),
+    }
+
+
+class OverridesBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "overrides")
+
+    def _on_ready(self):
+        self._send_state()
+
+    def _send_state(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        self.send("STATE", _payload(doc))
+        # Oberleiste mit-informieren: deren Topbar zeigt
+        # Toggle + Preset-Dropdown, das vom selben State abhaengt.
+        # Cache invalidieren, dann force-send, sonst sieht die Topbar
+        # neue Rules/Presets erst beim naechsten Toggle.
+        try:
+            b = sc.sticky.get("oberleiste_bridge")
+            if b is not None:
+                b._cached_overrides = None
+                b._send_state(force=True)
+        except Exception as ex:
+            print("[OVERRIDES] notify oberleiste:", ex)
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+        doc = Rhino.RhinoDoc.ActiveDoc
+
+        if t == "READY" or t == "REQUEST_STATE":
+            self._on_ready()
+        elif t == "SET_ENABLED":
+            overrides.set_enabled(doc, bool(p.get("enabled")))
+            self._send_state()
+        elif t == "ADD_RULE":
+            cfg = overrides.load_config(doc)
+            rule = p.get("rule") or {}
+            if not rule.get("id"):
+                rule["id"] = "rule_" + uuid.uuid4().hex[:8]
+            rule.setdefault("name", "Neue Regel")
+            rule.setdefault("enabled", True)
+            rule.setdefault("condition", {"type": "layer_name", "operator": "equals", "value": ""})
+            rule.setdefault("actions", {})
+            # Neue Regel oben einfuegen (= hoechste Prioritaet)
+            rules = cfg.get("rules") or []
+            rules.insert(0, rule)
+            overrides.update_rules(doc, rules, cfg.get("enabled"))
+            self._send_state()
+        elif t == "UPDATE_RULE":
+            cfg = overrides.load_config(doc)
+            rid = p.get("id")
+            patch = p.get("rule") or {}
+            rules = cfg.get("rules") or []
+            for i, r in enumerate(rules):
+                if r.get("id") == rid:
+                    rules[i] = patch
+                    break
+            overrides.update_rules(doc, rules, cfg.get("enabled"))
+            self._send_state()
+        elif t == "DELETE_RULE":
+            cfg = overrides.load_config(doc)
+            rid = p.get("id")
+            rules = [r for r in (cfg.get("rules") or []) if r.get("id") != rid]
+            overrides.update_rules(doc, rules, cfg.get("enabled"))
+            self._send_state()
+        elif t == "REORDER_RULES":
+            cfg = overrides.load_config(doc)
+            order = p.get("order") or []
+            by_id = {r.get("id"): r for r in (cfg.get("rules") or [])}
+            new_rules = [by_id[i] for i in order if i in by_id]
+            # Verbleibende (falls Liste inkonsistent) hinten anhaengen
+            for r in (cfg.get("rules") or []):
+                if r not in new_rules:
+                    new_rules.append(r)
+            overrides.update_rules(doc, new_rules, cfg.get("enabled"))
+            self._send_state()
+        elif t == "DUPLICATE_RULE":
+            cfg = overrides.load_config(doc)
+            rid = p.get("id")
+            rules = cfg.get("rules") or []
+            for i, r in enumerate(rules):
+                if r.get("id") == rid:
+                    import json
+                    clone = json.loads(json.dumps(r, ensure_ascii=False))
+                    clone["id"] = "rule_" + uuid.uuid4().hex[:8]
+                    clone["name"] = (r.get("name", "Regel") + " Kopie")
+                    rules.insert(i + 1, clone)
+                    break
+            overrides.update_rules(doc, rules, cfg.get("enabled"))
+            self._send_state()
+        elif t == "REAPPLY":
+            if overrides.load_config(doc).get("enabled"):
+                overrides.restore_all(doc)
+                overrides.apply_all(doc)
+            self._send_state()
+        elif t == "CLEAR_RULES":
+            # Alle Regeln entfernen und activePreset clearen — wird vom
+            # Topbar/Kombination-Dropdown beim Wechsel auf "— neu / keine —"
+            # gefeuert, damit der Editor wirklich leer ist.
+            cfg = overrides.load_config(doc)
+            overrides.update_rules(doc, [], cfg.get("enabled"))
+            self._send_state()
+
+        # --- Presets (cross-doc) ----------------------------------------
+        elif t == "SAVE_PRESET":
+            name = (p.get("name") or "").strip()
+            if name:
+                cfg = overrides.load_config(doc)
+                overrides.save_preset(name, cfg.get("rules") or [])
+            self._send_state()
+        elif t == "LOAD_PRESET":
+            name = (p.get("name") or "").strip()
+            mode = p.get("mode") or "replace"  # 'replace' oder 'append'
+            if mode == "replace":
+                # set_active_preset macht alles richtig: Rules ersetzen,
+                # activePreset = name, ggf. neu anwenden.
+                overrides.set_active_preset(doc, name)
+            else:
+                # Append-Mode: bestehende + Preset-Rules. activePreset wird
+                # in update_rules auf None gesetzt — passt, weil's eine
+                # Mischung ist, kein einzelnes Preset mehr.
+                rules = overrides.load_preset(name)
+                if rules is not None:
+                    cfg = overrides.load_config(doc)
+                    new_rules = list(cfg.get("rules") or []) + list(rules)
+                    overrides.update_rules(doc, new_rules, cfg.get("enabled"))
+            self._send_state()
+        elif t == "DELETE_PRESET":
+            name = (p.get("name") or "").strip()
+            if name:
+                overrides.delete_preset(name)
+            self._send_state()
+
+
+def _bridge_factory():
+    b = OverridesBridge()
+    try: overrides.install_listeners()
+    except Exception as ex: print("[OVERRIDES] install_listeners:", ex)
+    # Bridge im sticky ablegen, damit andere Panels (z.B. Oberleiste) sie
+    # bei Cross-Panel-Updates erreichen koennen.
+    sc.sticky["overrides_bridge"] = b
+    return b
+
+
+panel_base.register_and_open("overrides", "OVERRIDES", PANEL_GUID_STR, _bridge_factory,
+                             icon_spec=("V", "#b5621e"),
+                             min_size=(720, 560))
diff --git a/rhino/panel_base.py b/rhino/panel_base.py
new file mode 100644
index 0000000..0eff50f
--- /dev/null
+++ b/rhino/panel_base.py
@@ -0,0 +1,499 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+panel_base.py
+Geteilte Infrastruktur fuer dockbare Rhino-Panels mit React-WebView.
+Wird von rhinopanel.py (EBENEN) und gestaltung.py (GESTALTUNG) verwendet.
+"""
+import os
+import re
+import json
+import Rhino
+import Rhino.UI as RhinoUI
+import Eto.Forms as forms
+import Eto.Drawing as drawing
+import System
+import scriptcontext as sc
+
+_HERE  = os.path.dirname(os.path.abspath(__file__))
+_DIST  = os.path.join(_HERE, "..", "dist", "index.html")
+
+
+# --- Legacy-Migration: traite_* / pause_* -> dossier_* ----------------------
+#
+# Historisch hatte das Plugin nacheinander die Praefixe "traite_" und "pause_"
+# bevor es zu "dossier_" wurde. doc.Strings, Layer-UserStrings und
+# Object-UserStrings werden einmalig pro Doc nach "dossier_*" kopiert.
+# Idempotent — bestehende dossier_*-Werte werden nicht ueberschrieben.
+
+_LEGACY_DOC_KEYS = (
+    "zeichnungsebenen", "ebenen", "active_id", "active_code",
+    "ausschnitte", "ausschnitt_folders", "layer_presets",
+    "user_scale", "dpi",
+    "show_lineweights", "plotweight_orig", "hatch_scale_orig",
+    "clipping_plane",
+)
+_LEGACY_LAYER_USER_KEYS  = ("id", "code")
+_LEGACY_OBJECT_USER_KEYS = ("clipping_plane", "plotweight_orig", "hatch_scale_orig")
+_LEGACY_PREFIXES         = ("traite_", "pause_")
+_MIGRATE_FLAG = "dossier_migrated_v2"  # neuer Flag — laeuft auch auf Docs die nur traite->pause hatten
+
+
+def migrate_to_dossier(doc):
+    """Migriert einmalig pro Document alle traite_*- und pause_*-Keys zu
+    dossier_*. No-op wenn schon migriert (per doc.Strings-Flag erkannt)."""
+    if doc is None:
+        return
+    try:
+        if doc.Strings.GetValue(_MIGRATE_FLAG):
+            return
+    except Exception:
+        return
+    moved_ds = 0
+    # 1) doc.Strings
+    try:
+        for suffix in _LEGACY_DOC_KEYS:
+            new = "dossier_" + suffix
+            try:
+                if doc.Strings.GetValue(new):
+                    continue  # Dossier-Variante vorhanden -> nicht ueberschreiben
+                for prefix in _LEGACY_PREFIXES:
+                    old_v = doc.Strings.GetValue(prefix + suffix)
+                    if old_v:
+                        doc.Strings.SetString(new, old_v)
+                        moved_ds += 1
+                        break
+            except Exception:
+                pass
+    except Exception as ex:
+        print("[DOSSIER] migrate doc.Strings:", ex)
+    # 2) Layer-UserStrings
+    moved_layer = 0
+    try:
+        for layer in doc.Layers:
+            if layer is None or layer.IsDeleted:
+                continue
+            for suffix in _LEGACY_LAYER_USER_KEYS:
+                try:
+                    if layer.GetUserString("dossier_" + suffix):
+                        continue
+                    for prefix in _LEGACY_PREFIXES:
+                        v = layer.GetUserString(prefix + suffix)
+                        if v:
+                            layer.SetUserString("dossier_" + suffix, v)
+                            moved_layer += 1
+                            break
+                except Exception:
+                    pass
+    except Exception as ex:
+        print("[DOSSIER] migrate layers:", ex)
+    # 3) Object-UserStrings
+    moved_obj = 0
+    try:
+        for obj in doc.Objects:
+            if obj is None or obj.IsDeleted:
+                continue
+            attrs = obj.Attributes
+            need_apply = False
+            a2 = None
+            for suffix in _LEGACY_OBJECT_USER_KEYS:
+                try:
+                    if attrs.GetUserString("dossier_" + suffix):
+                        continue
+                    for prefix in _LEGACY_PREFIXES:
+                        v = attrs.GetUserString(prefix + suffix)
+                        if v:
+                            if a2 is None:
+                                a2 = attrs.Duplicate()
+                            a2.SetUserString("dossier_" + suffix, v)
+                            need_apply = True
+                            moved_obj += 1
+                            break
+                except Exception:
+                    pass
+            if need_apply and a2 is not None:
+                try:
+                    doc.Objects.ModifyAttributes(obj, a2, True)
+                except Exception:
+                    pass
+    except Exception as ex:
+        print("[DOSSIER] migrate objects:", ex)
+    # Flag setzen damit die Migration nicht erneut laeuft
+    try:
+        doc.Strings.SetString(_MIGRATE_FLAG, "1")
+    except Exception:
+        pass
+    if moved_ds or moved_layer or moved_obj:
+        print("[DOSSIER] Migration: doc.Strings={} Layer-UserStrings={} Object-UserStrings={}".format(
+            moved_ds, moved_layer, moved_obj))
+
+
+# --- Bridge -----------------------------------------------------------------
+
+class BaseBridge(object):
+    """
+    Basis-Bridge mit Chunk-Zusammenbau.
+    Subklassen ueberschreiben handle(data) und optional _on_ready().
+    """
+    def __init__(self, mode):
+        self._wv     = None
+        self._mode   = mode
+        self._chunks = {}
+        self._chunk_total = 0
+
+    def set_webview(self, wv):
+        self._wv = wv
+
+    def handle_raw(self, raw_str):
+        if not raw_str:
+            return
+        try:
+            data = json.loads(raw_str)
+        except Exception as ex:
+            print("[{}] JSON-Fehler: {}".format(self._mode.upper(), ex))
+            return
+        if not isinstance(data, dict):
+            return
+        if "_chunk" in data:
+            c = data["_chunk"]
+            self._chunks[int(c["i"])] = data["d"]
+            self._chunk_total = int(c["n"])
+            if len(self._chunks) == self._chunk_total:
+                full = "".join(self._chunks[k] for k in sorted(self._chunks.keys()))
+                self._chunks = {}
+                self._chunk_total = 0
+                try:
+                    self.handle(json.loads(full))
+                except Exception as ex:
+                    import traceback
+                    print("[{}] Chunk-Reassembly: {}".format(self._mode.upper(), ex))
+                    print("[{}] Traceback:\n{}".format(self._mode.upper(), traceback.format_exc()))
+        else:
+            self.handle(data)
+
+    def handle(self, data):
+        """Override. Default behandelt nur READY."""
+        if not isinstance(data, dict):
+            return
+        if data.get("type") == "READY":
+            self._on_ready()
+
+    def _on_ready(self):
+        """Subklasse sendet hier den initialen State."""
+        pass
+
+    def send(self, msg_type, payload=None):
+        if self._wv is None:
+            return
+        # ensure_ascii=False umgeht Rhinos buggy json/encoder.py
+        # (s.decode('utf-8') auf .NET-Strings mit Umlauten -> CP1252-Codec-Fehler)
+        data = json.dumps({"type": msg_type, "payload": payload or {}}, ensure_ascii=False)
+        try:
+            self._wv.ExecuteScript(
+                "if(window.onRhinoMessage)window.onRhinoMessage({});".format(data)
+            )
+        except Exception:
+            pass
+
+
+# --- HTML laden -------------------------------------------------------------
+
+def load_inline(wv, mode):
+    """Laedt dist/index.html inline und injiziert window.PANEL_MODE."""
+    if not os.path.exists(_DIST):
+        print("[{}] dist nicht gefunden".format(mode.upper()))
+        return
+    dist_dir = os.path.dirname(_DIST)
+    with open(_DIST, "rb") as f:
+        html = f.read().decode("utf-8")
+
+    mode_script = '<script>window.PANEL_MODE="{}";</script>'.format(mode)
+    if "</head>" in html:
+        html = html.replace("</head>", mode_script + "</head>")
+    else:
+        html = mode_script + html
+
+    def inline_css(m):
+        p = os.path.join(dist_dir, m.group(1).lstrip("./").replace("/", os.sep))
+        with open(p, "rb") as f2:
+            return u"<style>" + f2.read().decode("utf-8") + u"</style>"
+
+    def inline_js(m):
+        p = os.path.join(dist_dir, m.group(1).lstrip("./").replace("/", os.sep))
+        with open(p, "rb") as f2:
+            content = f2.read().decode("utf-8")
+        return (u'<script>document.addEventListener("DOMContentLoaded",function(){'
+                + content + u'});</script>')
+
+    html = re.sub(r'<link[^>]+href="(\./assets/[^"]+\.css)"[^>]*/?>',  inline_css, html)
+    html = re.sub(r'<script[^>]+src="(\./assets/[^"]+\.js)"[^>]*></script>', inline_js, html)
+    wv.LoadHtml(html)
+
+
+def attach_webview(panel, bridge, mode):
+    wv = forms.WebView()
+    bridge.set_webview(wv)
+    panel.Content = wv
+
+    def on_title(s, e):
+        title = e.Title or ""
+        if not title.startswith("RHINOMSG::"):
+            return
+        try:
+            bridge.handle_raw(title[10:])
+        except Exception as ex:
+            print("[{}] Message-Fehler: {}".format(mode.upper(), ex))
+        finally:
+            try:
+                wv.ExecuteScript("document.title='{}';".format(mode.upper()))
+            except Exception:
+                pass
+
+    def on_loaded(s, e):
+        try:
+            wv.ExecuteScript("window.RHINO_MODE=true;")
+        except Exception:
+            pass
+
+    def on_idle(s, e):
+        Rhino.RhinoApp.Idle -= on_idle
+        try:
+            load_inline(wv, mode)
+        except Exception as ex:
+            print("[{}] Inline-Fehler: {}".format(mode.upper(), ex))
+
+    wv.DocumentTitleChanged += on_title
+    wv.DocumentLoaded       += on_loaded
+    Rhino.RhinoApp.Idle     += on_idle
+
+
+# --- Dynamic .NET Type ------------------------------------------------------
+
+def create_dockable_type(guid_str, type_name, assembly_name):
+    """Baut einen echten CLR-Typ mit [Guid] fuer Rhinos RegisterPanel."""
+    import clr
+    import System.Reflection as SR
+    import System.Reflection.Emit as SRE
+
+    panel_base = clr.GetClrType(forms.Panel)
+    action_t   = clr.GetClrType(System.Action[forms.Panel])
+
+    asm = SRE.AssemblyBuilder.DefineDynamicAssembly(
+        SR.AssemblyName(assembly_name),
+        SRE.AssemblyBuilderAccess.Run
+    )
+    mod = asm.DefineDynamicModule(assembly_name)
+
+    tb = mod.DefineType(
+        type_name,
+        SR.TypeAttributes.Public | SR.TypeAttributes.Class,
+        panel_base
+    )
+
+    guid_attr_t = clr.GetClrType(System.Runtime.InteropServices.GuidAttribute)
+    guid_ctor   = guid_attr_t.GetConstructor(
+        System.Array[System.Type]([clr.GetClrType(System.String)])
+    )
+    tb.SetCustomAttribute(SRE.CustomAttributeBuilder(
+        guid_ctor, System.Array[System.Object]([guid_str])
+    ))
+
+    cb_field = tb.DefineField(
+        "_callback", action_t,
+        SR.FieldAttributes.Public | SR.FieldAttributes.Static
+    )
+
+    ctor = tb.DefineConstructor(
+        SR.MethodAttributes.Public,
+        SR.CallingConventions.Standard,
+        System.Type.EmptyTypes
+    )
+    il = ctor.GetILGenerator()
+    lbl = il.DefineLabel()
+
+    base_ctor = panel_base.GetConstructor(System.Type.EmptyTypes)
+    il.Emit(SRE.OpCodes.Ldarg_0)
+    il.Emit(SRE.OpCodes.Call, base_ctor)
+
+    il.Emit(SRE.OpCodes.Ldsfld, cb_field)
+    il.Emit(SRE.OpCodes.Brfalse_S, lbl)
+    il.Emit(SRE.OpCodes.Ldsfld, cb_field)
+    il.Emit(SRE.OpCodes.Ldarg_0)
+    il.Emit(SRE.OpCodes.Callvirt, action_t.GetMethod("Invoke"))
+    il.MarkLabel(lbl)
+    il.Emit(SRE.OpCodes.Ret)
+
+    return tb.CreateType()
+
+
+def _hex_rgb(h):
+    h = (h or "888888").lstrip("#")
+    return int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16)
+
+
+_ICON_CACHE_DIR = os.path.expanduser("~/Library/Application Support/RhinoPanel/icons")
+
+
+def make_panel_icon(letter, bg_hex):
+    """Erzeugt ein Icon (32x32) mit farbigem Quadrat + Buchstabe.
+    Schreibt es als PNG-Datei auf Disk und laedt es via Eto.Drawing.Icon(path)
+    — das ist der zuverlaessigste Weg auf Mac Rhino.
+    """
+    try:
+        size = 32  # 32x32 fuer Retina (wird auf 16pt skaliert dargestellt)
+        bmp  = drawing.Bitmap(size, size, drawing.PixelFormat.Format32bppRgba)
+        g    = drawing.Graphics(bmp)
+        try:
+            try: g.AntiAlias = True
+            except Exception: pass
+            r, gg, bl = _hex_rgb(bg_hex)
+            bg = drawing.Color.FromArgb(r, gg, bl, 255)
+            g.FillRectangle(bg, 0, 0, size, size)
+            try:
+                font = drawing.Font(drawing.FontFamilies.Sans, 18, drawing.FontStyle.Bold)
+            except Exception:
+                font = drawing.Font("Helvetica", 18, drawing.FontStyle.Bold)
+            try:
+                text_size = g.MeasureString(font, letter)
+                tx = (size - text_size.Width)  / 2
+                ty = (size - text_size.Height) / 2
+            except Exception:
+                tx, ty = size * 0.18, size * 0.12
+            g.DrawText(font, drawing.Colors.White, float(tx), float(ty), letter)
+        finally:
+            g.Dispose()
+        # PNG auf Disk schreiben — zuverlaessig fuer Mac Eto.Drawing.Icon
+        try:
+            if not os.path.isdir(_ICON_CACHE_DIR):
+                os.makedirs(_ICON_CACHE_DIR)
+            safe = re.sub(r"[^A-Za-z0-9]", "_", letter)
+            path = os.path.join(_ICON_CACHE_DIR, "icon_{}_{}.png".format(
+                safe, bg_hex.lstrip("#")))
+            bmp.Save(path, drawing.ImageFormat.Png)
+        except Exception as ex:
+            print("[panel_base] Icon-Save:", ex)
+            path = None
+        # 1. Versuch: Icon aus Datei-Pfad
+        if path and os.path.isfile(path):
+            try:
+                return drawing.Icon(path)
+            except Exception as ex:
+                print("[panel_base] Icon(path) fehlgeschlagen:", ex)
+        # 2. Versuch: Icon(scale, bitmap)
+        try:
+            return drawing.Icon(1.0, bmp)
+        except Exception: pass
+        # 3. Versuch: Icon(bitmap)
+        try:
+            return drawing.Icon(bmp)
+        except Exception: pass
+        # 4. Fallback: einfach das Bitmap zurueck (Rhino akzeptiert ggf. das auch)
+        return bmp
+    except Exception as ex:
+        print("[panel_base] Icon-Erstellung fehlgeschlagen:", ex)
+        return None
+
+
+def find_plugin():
+    try:
+        installed = Rhino.PlugIns.PlugIn.GetInstalledPlugIns()
+        for guid in installed.Keys:
+            name = str(installed[guid])
+            if any(k in name for k in ["RhinoCode", "Scripting", "Python", "Script"]):
+                p = Rhino.PlugIns.PlugIn.Find(guid)
+                if p is not None:
+                    return p
+    except Exception as ex:
+        print("[panel_base] Plugin-Suche:", ex)
+    return None
+
+
+def register_and_open(mode, caption, guid_str, bridge_factory, icon_spec=None, min_size=None):
+    """
+    Registriert (falls noetig) und oeffnet ein Panel.
+    bridge_factory: callable() -> BaseBridge Subklasse
+    icon_spec: (letter, hex_bg) zum Generieren eines Tab-Icons, oder None.
+    min_size:   (width, height) als Tuple — Panel-MinimumSize beim Erstellen.
+                Bei docked Panels wirkt's als Hint, bei float Panels als
+                tatsaechliche Startgroesse.
+    """
+    sticky_reg  = "panel_registered_" + mode
+    sticky_guid = "panel_guid_" + mode
+
+    if not sc.sticky.get(sticky_reg):
+        plugin = find_plugin()
+        if plugin is None:
+            print("[{}] Plugin nicht gefunden".format(mode.upper()))
+            return
+        try:
+            type_name = "DynPanel_" + mode
+            asm_name  = "RhinoPanelDyn_" + mode
+            dyn_type  = create_dockable_type(guid_str, type_name, asm_name)
+
+            def on_created(panel):
+                # MinimumSize setzen damit Rhino dem Panel bei Auto-Dock /
+                # Float genug Platz gibt (sonst spawned es schmal).
+                if min_size is not None:
+                    try:
+                        panel.MinimumSize = drawing.Size(int(min_size[0]), int(min_size[1]))
+                    except Exception as ex:
+                        print("[{}] MinimumSize konnte nicht gesetzt werden: {}".format(mode.upper(), ex))
+                    # Auf einigen Eto-Versionen gibt es zusaetzlich Size/ClientSize
+                    for attr in ("Size", "ClientSize"):
+                        try:
+                            if hasattr(panel, attr):
+                                setattr(panel, attr, drawing.Size(int(min_size[0]), int(min_size[1])))
+                        except Exception: pass
+                bridge = bridge_factory()
+                attach_webview(panel, bridge, mode)
+
+            dyn_type.GetField("_callback").SetValue(
+                None, System.Action[forms.Panel](on_created)
+            )
+            icon = None
+            if icon_spec:
+                try:
+                    icon = make_panel_icon(icon_spec[0], icon_spec[1])
+                except Exception as ex:
+                    print("[{}] Icon-Erstellung uebersprungen: {}".format(mode.upper(), ex))
+                    icon = None
+            registered = False
+            registered_with_icon = False
+            # Erst mit Icon versuchen, dann stillschweigend ohne (Mac Rhino-Panels
+            # akzeptieren auf manchen Versionen nur System.Drawing.Icon, das auf
+            # Mac nicht verfuegbar ist - die Registrierung ohne Icon ist OK).
+            attempts = [(icon, True)] if icon is not None else []
+            attempts.append((None, False))
+            for arg, with_icon in attempts:
+                try:
+                    RhinoUI.Panels.RegisterPanel(plugin, dyn_type, caption, arg)
+                    registered = True
+                    registered_with_icon = with_icon
+                    if with_icon:
+                        print("[{}] Panel mit Icon registriert ({})".format(
+                            mode.upper(), type(arg).__name__))
+                    break
+                except Exception as ex:
+                    if with_icon:
+                        print("[{}] RegisterPanel mit Icon fehlgeschlagen: {}".format(
+                            mode.upper(), ex))
+                    else:
+                        print("[{}] RegisterPanel fehlgeschlagen: {}".format(
+                            mode.upper(), ex))
+            if registered and not registered_with_icon and icon is not None:
+                print("[{}] Panel ohne Icon registriert (Fallback)".format(mode.upper()))
+            if not registered:
+                return
+            sc.sticky[sticky_reg]  = True
+            sc.sticky[sticky_guid] = System.Guid(guid_str)
+            print("[{}] Panel registriert".format(mode.upper()))
+        except Exception as ex:
+            print("[{}] Registrierung fehlgeschlagen: {}".format(mode.upper(), ex))
+            return
+
+    try:
+        guid = sc.sticky.get(sticky_guid, System.Guid(guid_str))
+        RhinoUI.Panels.OpenPanel(guid)
+        print("[{}] Panel geoeffnet".format(mode.upper()))
+    except Exception as ex:
+        print("[{}] OpenPanel fehlgeschlagen: {}".format(mode.upper(), ex))
diff --git a/rhino/rhinopanel.py b/rhino/rhinopanel.py
new file mode 100644
index 0000000..c0a6795
--- /dev/null
+++ b/rhino/rhinopanel.py
@@ -0,0 +1,798 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+rhinopanel.py
+Oeffnet das EBENEN-Panel (Zeichnungsebenen + globale Ebenen).
+"""
+import os
+import sys
+import json
+import Rhino
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+import layer_builder
+
+PANEL_GUID_STR = "3a7f2e1d-4b8c-4d9e-a1b2-c3d4e5f60718"
+
+# Loop-Guard fuer Layer-Events (verhindert Endlos-Schleife bei eigenen Aenderungen)
+def _is_processing():
+    return bool(sc.sticky.get("ebenen_processing_layer", False))
+
+def _set_processing(v):
+    sc.sticky["ebenen_processing_layer"] = bool(v)
+
+
+def _hatch_pattern_names(doc):
+    """Liefert alle Hatch-Pattern-Namen aus doc.HatchPatterns als Liste."""
+    out = []
+    try:
+        for i in range(doc.HatchPatterns.Count):
+            try:
+                hp = doc.HatchPatterns[i]
+                if hp is None or hp.IsDeleted: continue
+                if hp.Name: out.append(hp.Name)
+            except Exception:
+                continue
+    except Exception:
+        pass
+    if not out: out = ["Solid"]
+    return out
+
+
+class EbenenBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "ebenen")
+
+    def _on_ready(self):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+        e_raw = doc.Strings.GetValue("dossier_ebenen")
+        if z_raw or e_raw:
+            try:
+                z = json.loads(z_raw) if z_raw else None
+                e = json.loads(e_raw) if e_raw else None
+                if z and e:
+                    layer_builder.build_layers(doc, z, e)
+                    layer_builder.cleanup_default_layers(doc)
+                    self._ensure_active_sublayer()
+                self.send("STATE_SYNC", {
+                    "zeichnungsebenen": z,
+                    "ebenen":           e,
+                    "hatchPatterns":    _hatch_pattern_names(doc),
+                })
+            except Exception as ex:
+                print("[EBENEN] State-Sync:", ex)
+        else:
+            self.send("FIRST_RUN", {"hatchPatterns": _hatch_pattern_names(doc)})
+
+    def handle(self, data):
+        if not isinstance(data, dict):
+            return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict):
+            p = {}
+        doc = Rhino.RhinoDoc.ActiveDoc
+
+        if t == "READY":
+            self._on_ready()
+        elif t == "APPLY":
+            self._apply(p.get("zeichnungsebenen") or [], p.get("ebenen") or [])
+        elif t == "LAYER_STYLE":
+            layer_builder.update_layer_style(doc, p["code"], p.get("color"), p.get("lw"))
+            if p.get("color") is not None:
+                self._update_ebene_field(p["code"], "color", p["color"])
+            if p.get("lw") is not None:
+                self._update_ebene_field(p["code"], "lw", p["lw"])
+        elif t == "SET_ACTIVE":
+            self._set_active_zeichnungsebene(p)
+        elif t == "SET_ACTIVE_LAYER":
+            code = p.get("code", "")
+            if code:
+                doc.Strings.SetString("dossier_active_code", code)
+            self._set_active_sublayer(code)
+        elif t == "DELETE_EBENE":
+            layer_builder.delete_ebene(doc, p.get("code", ""), p.get("moveTo"))
+            self._remove_ebene_from_state(p.get("code", ""))
+        elif t == "MOVE_SELECTION_TO_LAYER":
+            self._move_selection_to_layer(p.get("code", ""))
+        elif t == "SET_VISIBILITY":
+            self._apply_visibility(p)
+        # --- Ebenen-Kombinationen (geteilter Store mit Ausschnitten) -------
+        elif t == "GET_COMBINATION":
+            self._send_combination()
+        elif t == "APPLY_COMBINATION":
+            self._apply_combination(p)
+            self._send_combination()
+        elif t == "SAVE_PRESET":
+            self._save_preset(p.get("name") or "", p.get("layers") or [])
+            self._send_combination()
+        elif t == "SAVE_CURRENT_AS_PRESET":
+            self._save_current_as_preset(p.get("name") or "")
+            self._send_combination()
+        elif t == "DELETE_PRESET":
+            self._delete_preset(p.get("name") or "")
+            self._send_combination()
+
+    # ---- Helpers ----
+
+    def _apply(self, zeichnungsebenen, ebenen):
+        print("[EBENEN] _apply START z={} e={}".format(
+            len(zeichnungsebenen) if zeichnungsebenen else 0,
+            len(ebenen) if ebenen else 0))
+        doc = Rhino.RhinoDoc.ActiveDoc
+
+        # Vor dem Schreiben: alten Fill-Stand snapshotten, damit wir hinterher
+        # entscheiden koennen ob refresh_layer_fills sich lohnt.
+        def _fill_signature(e_list):
+            out = {}
+            if not isinstance(e_list, list): return out
+            for e in e_list:
+                if not isinstance(e, dict): continue
+                f = e.get("fill")
+                if not isinstance(f, dict): continue
+                if f.get("pattern") in (None, "None"): continue
+                # lw kann None sein -> als Sentinel ein eindeutiger Wert
+                lw_raw = f.get("lw")
+                try:
+                    lw_sig = round(float(lw_raw), 6) if lw_raw is not None else None
+                except Exception:
+                    lw_sig = None
+                out[e.get("code")] = (
+                    f.get("pattern"),
+                    f.get("source", "layer"),
+                    (f.get("color") or "").lower(),
+                    round(float(f.get("scale") or 1.0), 6),
+                    round(float(f.get("rotation") or 0.0), 6),
+                    lw_sig,
+                )
+            return out
+        old_e_raw = doc.Strings.GetValue("dossier_ebenen")
+        old_sig = {}
+        if old_e_raw:
+            try: old_sig = _fill_signature(json.loads(old_e_raw))
+            except Exception: old_sig = {}
+        new_sig = _fill_signature(ebenen)
+        fill_changed = (old_sig != new_sig)
+
+        _set_processing(True)
+        try:
+            print("[EBENEN] _apply: build_layers ...")
+            layer_builder.build_layers(doc, zeichnungsebenen, ebenen)
+            print("[EBENEN] _apply: json.dumps ...")
+            # WICHTIG: ensure_ascii=False umgeht einen Bug in Rhinos eigener
+            # json/encoder.py die bei ASCII-escape s.decode('utf-8') aufruft
+            # und dabei mit 0xC4 (Umlaut) in den CP1252-Decoder lauft.
+            z_json = json.dumps(zeichnungsebenen, ensure_ascii=False)
+            e_json = json.dumps(ebenen,           ensure_ascii=False)
+            print("[EBENEN] _apply: SetString ...")
+            doc.Strings.SetString("dossier_zeichnungsebenen", z_json)
+            doc.Strings.SetString("dossier_ebenen",            e_json)
+            # Smart-Elemente (Waende) regenerieren — Geschoss-Hoehen/OKFF
+            # haben sich evtl. geaendert, gebundene Waende muessen neu
+            # extrudiert werden. Best-effort, faengt jeden Fehler ab.
+            try:
+                elem_bridge = sc.sticky.get("elemente_bridge")
+                if elem_bridge is not None:
+                    elem_bridge._regenerate_all()
+            except Exception as _ex:
+                print("[EBENEN] elemente regen:", _ex)
+            n_with_fill = sum(1 for e in ebenen if isinstance(e, dict)
+                              and isinstance(e.get("fill"), dict)
+                              and e["fill"].get("pattern") not in (None, "None"))
+            print("[EBENEN] dossier_ebenen gespeichert: {} Ebenen, davon {} mit fill, JSON-len={}".format(
+                len(ebenen), n_with_fill, len(e_json)))
+            re_read = doc.Strings.GetValue("dossier_ebenen")
+            print("[EBENEN] dossier_ebenen verifiziert: len={}".format(len(re_read) if re_read else 0))
+            print("[EBENEN] _apply: cleanup_default_layers ...")
+            layer_builder.cleanup_default_layers(doc)
+            print("[EBENEN] _apply: ensure_active_sublayer ...")
+            self._ensure_active_sublayer()
+            # Existierende 'Nach Ebene'-Hatches an neue Pattern/Skala/Drehung
+            # angleichen — ABER nur wenn die Fill-Signatur sich tatsaechlich
+            # geaendert hat (nicht bei reinen Name/Farb-Aenderungen, die das
+            # Settings-Dialog auch triggern koennte).
+            try:
+                import gestaltung
+                if fill_changed:
+                    gestaltung.refresh_layer_fills(doc)
+                else:
+                    print("[EBENEN] _apply: fill-Signatur unveraendert -> kein Hatch-Refresh")
+                # Plot-Color Repair laeuft immer (no-op falls schon synchron)
+                gestaltung.repair_plot_colors(doc)
+            except Exception as ex:
+                print("[EBENEN] gestaltung sync:", ex)
+        finally:
+            _set_processing(False)
+        print("[EBENEN] _apply: update_clipping ...")
+        self._update_clipping()
+        print("[EBENEN] _apply: send APPLY_OK")
+        self.send("APPLY_OK", {})
+        print("[EBENEN] _apply: DONE")
+
+    def _ensure_active_sublayer(self):
+        """Setzt den aktiven Rhino-Layer auf den DOSSIER-Sublayer (Fallback: erste Z + 20_WAENDE)."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        z_id = doc.Strings.GetValue("dossier_active_id")
+        code = doc.Strings.GetValue("dossier_active_code") or "20"
+        if not z_id:
+            z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+            if z_raw:
+                try:
+                    z_list = json.loads(z_raw)
+                    if z_list:
+                        z_id = z_list[0].get("id", "")
+                        if z_id:
+                            doc.Strings.SetString("dossier_active_id", z_id)
+                except Exception:
+                    pass
+        if z_id and code:
+            layer_builder.set_active_sublayer(doc, z_id, code)
+
+    def _apply_visibility(self, p):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+        e_raw = doc.Strings.GetValue("dossier_ebenen")
+        if not z_raw or not e_raw:
+            return
+        try:
+            z_full = json.loads(z_raw) or []
+            e_full = json.loads(e_raw) or []
+        except Exception:
+            return
+        payload_z = p.get("zeichnungsebenen") or []
+        payload_e = p.get("ebenen") or []
+        z_state = {z["id"]: z for z in payload_z if isinstance(z, dict) and z.get("id")}
+        e_state = {e["code"]: e for e in payload_e if isinstance(e, dict) and e.get("code")}
+        merged_z = []
+        for z in z_full:
+            if not isinstance(z, dict): continue
+            m = dict(z)
+            s = z_state.get(z.get("id"))
+            if s is not None:
+                m["visible"] = s.get("visible", True)
+            merged_z.append(m)
+        merged_e = []
+        for e in e_full:
+            if not isinstance(e, dict): continue
+            m = dict(e)
+            s = e_state.get(e.get("code"))
+            if s is not None:
+                m["visible"] = s.get("visible", True)
+                m["locked"]  = s.get("locked",  False)
+            merged_e.append(m)
+        doc.Strings.SetString("dossier_zeichnungsebenen", json.dumps(merged_z, ensure_ascii=False))
+        doc.Strings.SetString("dossier_ebenen",            json.dumps(merged_e, ensure_ascii=False))
+        active_z = p.get("activeZ") or {}
+        if not isinstance(active_z, dict): active_z = {}
+        layer_builder.apply_visibility(
+            doc, merged_z, merged_e,
+            active_z.get("id"),
+            p.get("activeCode"),
+            p.get("zMode") or "active",
+            p.get("eMode") or "all",
+        )
+
+    def _set_active_zeichnungsebene(self, z):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        z_id = z.get("id", "")
+        doc.Strings.SetString("dossier_active_id", z_id)
+        # Clipping ggf. mitziehen
+        self._update_clipping(active_z=z)
+        # Elemente-Panel informieren: das aktive Geschoss hat gewechselt,
+        # neue Elemente sollen jetzt automatisch dort verlinkt werden.
+        try:
+            eb = sc.sticky.get("elemente_bridge")
+            if eb is not None: eb._send_state()
+        except Exception: pass
+        if not (z.get("isGeschoss") and z.get("okff") is not None):
+            return
+        okff = float(z["okff"])
+        updated = 0
+        for view in doc.Views:
+            try:
+                vp = view.ActiveViewport
+                cp = vp.ConstructionPlane()
+                plane = cp.Plane if hasattr(cp, "Plane") else cp
+                # Nur Views deren CPlane horizontal liegt (Normal in +/-Z) -
+                # also Top/Plan-Style. Right/Front/Perspective haben vertikale
+                # CPlanes; ein Z-Shift waere dort optisch verwirrend.
+                if abs(plane.Normal.Z) < 0.99:
+                    continue
+                new_plane = Rhino.Geometry.Plane(
+                    Rhino.Geometry.Point3d(plane.Origin.X, plane.Origin.Y, okff),
+                    plane.XAxis, plane.YAxis,
+                )
+                vp.SetConstructionPlane(new_plane)
+                view.Redraw()
+                updated += 1
+            except Exception as ex:
+                print("[EBENEN] CPlane fehler ({}): {}".format(vp.Name if vp else "?", ex))
+        print("[EBENEN] CPlane Z={} auf {} Top-Style View(s) gesetzt".format(okff, updated))
+
+    def _update_clipping(self, active_z=None):
+        """Clipping-Plane folgt aktivem Geschoss — nur wenn dessen hasClipping=True."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if active_z is None:
+            z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+            active_id = doc.Strings.GetValue("dossier_active_id")
+            if z_raw and active_id:
+                try:
+                    z_list = json.loads(z_raw)
+                    active_z = next((z for z in z_list if z.get("id") == active_id), None)
+                except Exception:
+                    active_z = None
+        enabled = bool(active_z and active_z.get("hasClipping"))
+        _set_processing(True)
+        try:
+            layer_builder.update_clipping_plane(doc, active_z, enabled)
+        finally:
+            _set_processing(False)
+
+    def _move_selection_to_layer(self, code):
+        if not code:
+            return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        z_id = doc.Strings.GetValue("dossier_active_id")
+        if not z_id:
+            print("[EBENEN] Keine aktive Zeichnungsebene")
+            return
+        parent_idx = layer_builder._find_top_by_id(doc, z_id)
+        if parent_idx < 0:
+            print("[EBENEN] Parent fuer aktive Zeichnungsebene nicht gefunden")
+            return
+        parent_id = doc.Layers[parent_idx].Id
+        sub_idx = layer_builder._find_sublayer_by_code(doc, parent_id, code)
+        if sub_idx < 0:
+            print("[EBENEN] Sublayer {} unter {} nicht gefunden".format(code, doc.Layers[parent_idx].Name))
+            return
+        objs = list(doc.Objects.GetSelectedObjects(False, False))
+        moved = 0
+        for obj in objs:
+            attrs = obj.Attributes.Duplicate()
+            attrs.LayerIndex = sub_idx
+            if doc.Objects.ModifyAttributes(obj, attrs, True):
+                moved += 1
+        doc.Views.Redraw()
+        print("[EBENEN] {} Objekt(e) auf {} verschoben".format(moved, doc.Layers[sub_idx].FullPath))
+
+    def _set_active_sublayer(self, code):
+        if not code:
+            return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        z_id = doc.Strings.GetValue("dossier_active_id")
+        if not z_id:
+            # Fallback: erste Zeichnungsebene aus persistiertem State
+            z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+            if z_raw:
+                try:
+                    z_list = json.loads(z_raw)
+                    if z_list:
+                        z_id = z_list[0].get("id", "")
+                        if z_id:
+                            doc.Strings.SetString("dossier_active_id", z_id)
+                except Exception:
+                    pass
+        if z_id:
+            layer_builder.set_active_sublayer(doc, z_id, code)
+        else:
+            print("[EBENEN] Aktive Zeichnungsebene unbekannt — Layer wird nicht gesetzt")
+
+    def _remove_ebene_from_state(self, code):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        raw = doc.Strings.GetValue("dossier_ebenen")
+        if not raw:
+            return
+        try:
+            ebenen = [e for e in json.loads(raw) if e.get("code") != code]
+            doc.Strings.SetString("dossier_ebenen", json.dumps(ebenen, ensure_ascii=False))
+        except Exception as ex:
+            print("[EBENEN] remove:", ex)
+
+    def _update_ebene_field(self, code, field, value):
+        doc = Rhino.RhinoDoc.ActiveDoc
+        raw = doc.Strings.GetValue("dossier_ebenen")
+        if not raw:
+            return
+        try:
+            ebenen = json.loads(raw)
+            for e in ebenen:
+                if e.get("code") == code:
+                    e[field] = value
+                    break
+            doc.Strings.SetString("dossier_ebenen", json.dumps(ebenen, ensure_ascii=False))
+        except Exception as ex:
+            print("[EBENEN] update:", ex)
+
+    # ---- Ebenen-Kombinationen / Presets (geteilt mit AUSSCHNITTE) --------
+
+    _PRESETS_KEY = "dossier_layer_presets"
+
+    def _load_presets(self, doc):
+        raw = doc.Strings.GetValue(self._PRESETS_KEY)
+        if not raw: return []
+        try:
+            data = json.loads(raw)
+            return data if isinstance(data, list) else []
+        except Exception:
+            return []
+
+    def _store_presets(self, doc, presets):
+        try:
+            doc.Strings.SetString(self._PRESETS_KEY,
+                                  json.dumps(presets, ensure_ascii=False))
+        except Exception as ex:
+            print("[EBENEN] _store_presets:", ex)
+
+    def _send_combination(self):
+        """Schickt aktuelles Layer-State + alle Presets ans Frontend."""
+        doc = Rhino.RhinoDoc.ActiveDoc
+        layers_out = []
+        try:
+            for layer in doc.Layers:
+                if layer is None or layer.IsDeleted: continue
+                lid = str(layer.Id)
+                try:
+                    fp = layer.FullPath or layer.Name
+                except Exception:
+                    fp = layer.Name or ""
+                try:
+                    col = "#%02x%02x%02x" % (layer.Color.R, layer.Color.G, layer.Color.B)
+                except Exception:
+                    col = "#888888"
+                layers_out.append({
+                    "id":       lid,
+                    "name":     layer.Name,
+                    "fullPath": fp,
+                    "color":    col,
+                    "visible":  bool(layer.IsVisible),
+                    "locked":   bool(layer.IsLocked),
+                })
+            layers_out.sort(key=lambda x: x["fullPath"])
+        except Exception as ex:
+            print("[EBENEN] _send_combination layers:", ex)
+        try:
+            presets = self._load_presets(doc)
+        except Exception:
+            presets = []
+        self.send("COMBINATION_DATA", {
+            "layers":  layers_out,
+            "presets": presets,
+        })
+
+    def _apply_combination(self, payload):
+        """Wendet Preset an. payload kann sein:
+          - Liste [{id, visible, locked}, ...]  (alt / AUSSCHNITTE-Dialog)
+          - Dict { layers, dossierEbenen?, dossierZeichnungsebenen? } (neu)
+
+        Eye-State-Pfad (bevorzugt): aktualisiert dossier_ebenen und
+        dossier_zeichnungsebenen direkt, pusht STATE_SYNC. React triggert
+        dann SET_VISIBILITY und apply_visibility setzt doc.Layer korrekt
+        unter Beruecksichtigung von z_mode/e_mode.
+
+        Layer-ID-Pfad (Fallback): setzt doc.Layer.IsVisible direkt.
+        """
+        doc = Rhino.RhinoDoc.ActiveDoc
+
+        # Payload normalisieren
+        if isinstance(payload, dict):
+            layer_states = payload.get("layers") or []
+            pe_states = payload.get("dossierEbenen")
+            pz_states = payload.get("dossierZeichnungsebenen")
+        else:
+            layer_states = payload or []
+            pe_states = None
+            pz_states = None
+
+        # --- Eye-State-Pfad (wenn vorhanden) ---
+        if pe_states is not None or pz_states is not None:
+            try:
+                e_raw = doc.Strings.GetValue("dossier_ebenen") or "[]"
+                z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen") or "[]"
+                e_list = json.loads(e_raw) or []
+                z_list = json.loads(z_raw) or []
+                if pe_states is not None:
+                    by_code = {x.get("code"): x for x in pe_states if isinstance(x, dict) and x.get("code")}
+                    for e in e_list:
+                        if not isinstance(e, dict): continue
+                        s = by_code.get(e.get("code"))
+                        if s is None: continue
+                        e["visible"] = bool(s.get("visible", True))
+                        e["locked"]  = bool(s.get("locked",  False))
+                if pz_states is not None:
+                    by_id = {x.get("id"): x for x in pz_states if isinstance(x, dict) and x.get("id")}
+                    for z in z_list:
+                        if not isinstance(z, dict): continue
+                        s = by_id.get(z.get("id"))
+                        if s is None: continue
+                        z["visible"] = bool(s.get("visible", True))
+                doc.Strings.SetString("dossier_ebenen", json.dumps(e_list, ensure_ascii=False))
+                doc.Strings.SetString("dossier_zeichnungsebenen", json.dumps(z_list, ensure_ascii=False))
+                # STATE_SYNC pushen — React's visibilityKey aendert sich,
+                # applyVisibility fires, backend apply_visibility setzt doc.Layer
+                # state korrekt unter z_mode/e_mode-Beachtung.
+                self.send("STATE_SYNC", {
+                    "zeichnungsebenen": z_list,
+                    "ebenen":           e_list,
+                })
+                try: doc.Views.Redraw()
+                except Exception: pass
+                print("[EBENEN] Eye-State-Preset angewandt: {} Ebenen, {} Zeichnungsebenen".format(
+                    len(pe_states or []), len(pz_states or [])))
+                return
+            except Exception as ex:
+                print("[EBENEN] _apply_combination eye-state:", ex)
+                # Fall through zum Layer-ID-Pfad als Fallback
+
+        # --- Layer-ID-Pfad (alt / AUSSCHNITTE) ---
+        by_id = {}
+        for layer in doc.Layers:
+            if not layer.IsDeleted:
+                by_id[str(layer.Id)] = layer
+        n = 0
+        # Erst: doc.Layer Visibility setzen
+        _set_processing(True)
+        try:
+            for ls in (layer_states or []):
+                layer = by_id.get(ls.get("id"))
+                if layer is None: continue
+                try:
+                    want_vis = bool(ls.get("visible", True))
+                    want_lck = bool(ls.get("locked", False))
+                    if layer.IsVisible != want_vis:
+                        layer.IsVisible = want_vis
+                    if layer.IsLocked != want_lck:
+                        layer.IsLocked = want_lck
+                    n += 1
+                except Exception: pass
+        finally:
+            _set_processing(False)
+        # Dann: dossier_ebenen/dossier_zeichnungsebenen Eye-State synchronisieren.
+        # Map: doc.Layer.Id -> {visible, locked}
+        state_by_id = {ls.get("id"): ls for ls in (layer_states or []) if ls.get("id")}
+        try:
+            e_raw = doc.Strings.GetValue("dossier_ebenen")
+            z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+            ebenen_list = json.loads(e_raw) if e_raw else []
+            z_list      = json.loads(z_raw) if z_raw else []
+            # Sublayer -> dossier_code mapping via Rhino-Layer UserString
+            code_by_layer_id = {}
+            zid_by_layer_id  = {}
+            for layer in doc.Layers:
+                if layer is None or layer.IsDeleted: continue
+                c = layer.GetUserString("dossier_code")
+                i = layer.GetUserString("dossier_id")
+                if c: code_by_layer_id[str(layer.Id)] = c
+                if i: zid_by_layer_id[str(layer.Id)] = i
+            # Pro Dossier-Ebene: wenn mind. ein matchender Sublayer im preset war,
+            # sync visible/locked.
+            updated_e = False
+            for e in ebenen_list:
+                if not isinstance(e, dict): continue
+                code = e.get("code")
+                if not code: continue
+                # Suche eine Layer-Id mit diesem code, deren state im preset ist
+                for lid, c in code_by_layer_id.items():
+                    if c != code: continue
+                    s = state_by_id.get(lid)
+                    if s is None: continue
+                    new_vis = bool(s.get("visible", True))
+                    new_lck = bool(s.get("locked", False))
+                    if e.get("visible", True) != new_vis:
+                        e["visible"] = new_vis
+                        updated_e = True
+                    if (e.get("locked", False)) != new_lck:
+                        e["locked"] = new_lck
+                        updated_e = True
+                    break
+            updated_z = False
+            for z in z_list:
+                if not isinstance(z, dict): continue
+                zid = z.get("id")
+                if not zid: continue
+                for lid, z_uid in zid_by_layer_id.items():
+                    if z_uid != zid: continue
+                    s = state_by_id.get(lid)
+                    if s is None: continue
+                    new_vis = bool(s.get("visible", True))
+                    if z.get("visible", True) != new_vis:
+                        z["visible"] = new_vis
+                        updated_z = True
+                    break
+            if updated_e:
+                doc.Strings.SetString("dossier_ebenen", json.dumps(ebenen_list, ensure_ascii=False))
+            if updated_z:
+                doc.Strings.SetString("dossier_zeichnungsebenen", json.dumps(z_list, ensure_ascii=False))
+            # STATE_SYNC ans React-Panel pushen damit Eye-Icons matchen
+            if updated_e or updated_z:
+                try:
+                    self.send("STATE_SYNC", {
+                        "zeichnungsebenen": z_list,
+                        "ebenen":           ebenen_list,
+                    })
+                except Exception as ex:
+                    print("[EBENEN] STATE_SYNC push:", ex)
+        except Exception as ex:
+            print("[EBENEN] _apply_combination sync:", ex)
+        try: doc.Views.Redraw()
+        except Exception: pass
+        print("[EBENEN] Kombination angewandt: {} Layer".format(n))
+
+    def _save_preset(self, name, layers):
+        name = (name or "").strip()
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        presets = self._load_presets(doc)
+        clean = []
+        for ls in (layers or []):
+            lid = ls.get("id")
+            if not lid: continue
+            clean.append({
+                "id":      lid,
+                "visible": bool(ls.get("visible", True)),
+                "locked":  bool(ls.get("locked", False)),
+            })
+        existing = next((p for p in presets if p.get("name") == name), None)
+        if existing is not None:
+            existing["layers"] = clean
+        else:
+            presets.append({"name": name, "layers": clean})
+        self._store_presets(doc, presets)
+        print("[EBENEN] Kombination '{}' gespeichert ({} Layer)".format(name, len(clean)))
+
+    def _save_current_as_preset(self, name):
+        """Speichert die aktuellen Eye-States (dossier_ebenen + dossier_zeichnungs-
+        ebenen) als Preset — NICHT die berechneten doc.Layer.IsVisible-Werte.
+        Sonst wuerde der z_mode/e_mode-Override (z.B. 'active' nur 1 Layer
+        sichtbar) ins Preset einbacken und beim Apply nicht wieder restorbar
+        sein.
+
+        layers (doc.Layer-Liste) wird parallel mitgespeichert fuer Kompat
+        mit AUSSCHNITTE (das vom doc.Layer-State liest)."""
+        name = (name or "").strip()
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        # 1) doc.Layer state (Kompat mit AUSSCHNITTE)
+        layers = []
+        try:
+            for layer in doc.Layers:
+                if layer is None or layer.IsDeleted: continue
+                layers.append({
+                    "id":      str(layer.Id),
+                    "visible": bool(layer.IsVisible),
+                    "locked":  bool(layer.IsLocked),
+                })
+        except Exception as ex:
+            print("[EBENEN] _save_current_as_preset enum:", ex)
+        # 2) Eye-States aus dossier_ebenen / dossier_zeichnungsebenen
+        pe_state = []
+        pz_state = []
+        try:
+            e_raw = doc.Strings.GetValue("dossier_ebenen")
+            if e_raw:
+                for e in (json.loads(e_raw) or []):
+                    if isinstance(e, dict) and e.get("code"):
+                        pe_state.append({
+                            "code":    e["code"],
+                            "visible": bool(e.get("visible", True)),
+                            "locked":  bool(e.get("locked",  False)),
+                        })
+            z_raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+            if z_raw:
+                for z in (json.loads(z_raw) or []):
+                    if isinstance(z, dict) and z.get("id"):
+                        pz_state.append({
+                            "id":      z["id"],
+                            "visible": bool(z.get("visible", True)),
+                        })
+        except Exception as ex:
+            print("[EBENEN] _save_current_as_preset eye-states:", ex)
+        presets = self._load_presets(doc)
+        new_data = {
+            "name":   name,
+            "layers": layers,
+            "dossierEbenen":          pe_state,
+            "dossierZeichnungsebenen": pz_state,
+        }
+        existing = next((p for p in presets if p.get("name") == name), None)
+        if existing is not None:
+            existing.update(new_data)
+        else:
+            presets.append(new_data)
+        self._store_presets(doc, presets)
+        print("[EBENEN] '{}' gespeichert: {} Layer + {} Ebenen Eye-State".format(
+            name, len(layers), len(pe_state)))
+
+    def _delete_preset(self, name):
+        name = (name or "").strip()
+        if not name: return
+        doc = Rhino.RhinoDoc.ActiveDoc
+        presets = [p for p in self._load_presets(doc) if p.get("name") != name]
+        self._store_presets(doc, presets)
+        print("[EBENEN] Kombination '{}' geloescht".format(name))
+
+
+def _ebenen_bridge_factory():
+    bridge = EbenenBridge()
+    _install_layer_listener(bridge)
+    return bridge
+
+
+def _install_layer_listener(bridge):
+    """Reagiert auf externe Aenderungen in Rhinos Layer-Tabelle (Rename, Delete)."""
+    if sc.sticky.get("ebenen_layer_listener"):
+        sc.sticky["ebenen_bridge_ref"] = bridge
+        return
+    sc.sticky["ebenen_bridge_ref"] = bridge
+
+    def on_layer_event(sender, args):
+        if _is_processing():
+            return
+        try:
+            doc = args.Document
+            evt = args.EventType
+            # Nur Modify-Events interessieren uns (Rename, Color etc.)
+            if evt != Rhino.DocObjects.Tables.LayerTableEventType.Modified:
+                return
+            idx = args.LayerIndex
+            if idx < 0 or idx >= doc.Layers.Count:
+                return
+            layer = doc.Layers[idx]
+            dossier_id   = layer.GetUserString("dossier_id")
+            dossier_code = layer.GetUserString("dossier_code")
+            if not (dossier_id or dossier_code):
+                return
+            updated = False
+            if dossier_id:
+                raw = doc.Strings.GetValue("dossier_zeichnungsebenen")
+                if raw:
+                    try:
+                        z_list = json.loads(raw)
+                        for z in z_list:
+                            if z.get("id") == dossier_id and z.get("name") != layer.Name:
+                                z["name"] = layer.Name
+                                updated = True
+                                break
+                        if updated:
+                            doc.Strings.SetString("dossier_zeichnungsebenen", json.dumps(z_list, ensure_ascii=False))
+                    except Exception:
+                        pass
+            elif dossier_code:
+                raw = doc.Strings.GetValue("dossier_ebenen")
+                if raw:
+                    try:
+                        e_list = json.loads(raw)
+                        # Layer-Name ist "CC_NAME" — wir extrahieren NAME
+                        if "_" in layer.Name:
+                            new_name = layer.Name.split("_", 1)[1]
+                            for e in e_list:
+                                if e.get("code") == dossier_code and e.get("name") != new_name:
+                                    e["name"] = new_name
+                                    updated = True
+                                    break
+                        if updated:
+                            doc.Strings.SetString("dossier_ebenen", json.dumps(e_list, ensure_ascii=False))
+                    except Exception:
+                        pass
+            if updated:
+                b = sc.sticky.get("ebenen_bridge_ref")
+                if b is not None:
+                    try:
+                        b._on_ready()  # sendet aktualisiertes STATE_SYNC
+                    except Exception:
+                        pass
+        except Exception as ex:
+            print("[EBENEN] Layer-Event:", ex)
+
+    Rhino.RhinoDoc.LayerTableEvent += on_layer_event
+    sc.sticky["ebenen_layer_listener"] = True
+    print("[EBENEN] Layer-Listener aktiv")
+
+
+panel_base.register_and_open("ebenen", "EBENEN", PANEL_GUID_STR, _ebenen_bridge_factory,
+                             icon_spec=("E", "#3a6fa8"))
diff --git a/rhino/startup.py b/rhino/startup.py
new file mode 100644
index 0000000..a7a32bc
--- /dev/null
+++ b/rhino/startup.py
@@ -0,0 +1,136 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+startup.py
+Laedt DOSSIER-Panels beim Rhino-Start. Liest pro geoeffnetem Dokument eine
+`dossier.project.json` (neben der `.3dm` abgelegt vom Dossier-Launcher) und
+aktiviert nur die dort gelisteten Module. Fehlt die Datei → alle bekannten
+Module laden (Backwards-Compat fuer Setups ohne Launcher).
+"""
+import os
+import sys
+import json
+import Rhino
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+# Pfad zur Custom-UI (Toolbars/Sidebar) — wird einmal pro Session geladen
+_UI_FILE = os.path.join(_HERE, "DOSSIERUI.rhw")
+
+# Map: Modul-ID (aus dossier.project.json) -> Python-Modulname (Datei in rhino/).
+# Muss synchron sein mit launcher/modules.json. Wenn neue Module dazukommen,
+# beide Stellen pflegen.
+_MODULE_TO_PY = {
+    "ebenen":      "rhinopanel",
+    "oberleiste":  "oberleiste",
+    "ausschnitte": "ausschnitte",
+    "gestaltung":  "gestaltung",
+    "werkzeuge":   "werkzeuge",
+    "overrides":   "overrides_panel",
+    "dimensionen": "dimensionen",
+    "layouts":     "layouts",
+    "elemente":    "elemente",
+}
+
+_ALL_MODULES = list(_MODULE_TO_PY.keys())
+
+
+def _read_project_config():
+    """Liest dossier.project.json aus dem Ordner des aktiven Docs. Rueckgabe:
+    dict oder None. None heisst „keine Config" -> Fallback alle Module."""
+    try:
+        doc = Rhino.RhinoDoc.ActiveDoc
+        if doc is None or not getattr(doc, "Path", None):
+            return None
+        doc_dir = os.path.dirname(doc.Path)
+        if not doc_dir:
+            return None
+        config_path = os.path.join(doc_dir, "dossier.project.json")
+        if not os.path.isfile(config_path):
+            return None
+        with open(config_path, "rb") as f:
+            data = json.loads(f.read().decode("utf-8"))
+        return data if isinstance(data, dict) else None
+    except Exception as ex:
+        print("[STARTUP] Project-Config lesen:", ex)
+        return None
+
+
+def _migrate_active_doc(*_):
+    """Migriert Legacy-Keys (traite_*, pause_*) -> dossier_* fuer das aktive Doc."""
+    try:
+        import panel_base
+        panel_base.migrate_to_dossier(Rhino.RhinoDoc.ActiveDoc)
+    except Exception as ex:
+        print("[STARTUP] Migration:", ex)
+
+
+def _on_doc_opened(sender, e):
+    """Greift bei jedem geoeffneten Doc nach Rhino-Start. Migration ist
+    idempotent (Flag in doc.Strings)."""
+    try:
+        doc = e.Document if hasattr(e, "Document") else Rhino.RhinoDoc.ActiveDoc
+        import panel_base
+        panel_base.migrate_to_dossier(doc)
+    except Exception as ex:
+        print("[STARTUP] _on_doc_opened:", ex)
+
+
+def _hint_dossier_ui():
+    """Mac Rhino 8 kann Window-Layout-Dateien nicht via Skript laden — der
+    Dialog ueber Window-Menue nutzt interne API ohne Command-Echo. Wir
+    geben nur einen Hinweis-Pfad aus, damit der User DOSSIERUI.rhw einmal
+    manuell laden kann. Rhino merkt sich die Anordnung dann persistent."""
+    if not os.path.isfile(_UI_FILE):
+        return
+    print("[STARTUP] DOSSIERUI gefunden: {}".format(_UI_FILE))
+    print("[STARTUP]   Einmalig laden: Window -> Window Layout -> Open -> obige Datei")
+    print("[STARTUP]   Anordnung bleibt danach ueber Rhino-Restarts erhalten.")
+
+
+def _load_all(sender, e):
+    """Wird beim ersten Idle ausgefuehrt — entkoppelt sich danach selbst."""
+    try:
+        Rhino.RhinoApp.Idle -= _load_all
+    except Exception:
+        pass
+    print("[STARTUP] Lade DOSSIER-Panels...")
+    # Migration einmal fuer das beim Start aktive Doc
+    _migrate_active_doc()
+    # Und Listener fuer spaeter geoeffnete Docs registrieren
+    try:
+        Rhino.RhinoDoc.EndOpenDocument += _on_doc_opened
+    except Exception as ex:
+        print("[STARTUP] EndOpenDocument-Hook:", ex)
+    # Projekt-Config bestimmt, welche Module geladen werden. Ohne Config
+    # (kein Launcher benutzt, oder Datei nicht da) laedt der Host alles.
+    config = _read_project_config()
+    if config and isinstance(config.get("modules"), list):
+        enabled_ids = [m for m in config["modules"] if m in _MODULE_TO_PY]
+        unknown = [m for m in config["modules"] if m not in _MODULE_TO_PY]
+        print("[STARTUP] Projekt: '{}'".format(config.get("name") or "?"))
+        print("[STARTUP] Aktivierte Module: {}".format(", ".join(enabled_ids) or "(keine)"))
+        if unknown:
+            print("[STARTUP] Unbekannte Modul-IDs in Config: {}".format(unknown))
+    else:
+        enabled_ids = _ALL_MODULES
+        print("[STARTUP] Keine dossier.project.json — alle Module laden")
+    # massstab.py wird als Library mitgeladen (von oberleiste/ausschnitte/...)
+    # und braucht hier nicht mehr als eigenstaendiges Panel zu erscheinen.
+    for mod_id in enabled_ids:
+        py_name = _MODULE_TO_PY[mod_id]
+        try:
+            __import__(py_name)
+            print("[STARTUP]   {} ({}) OK".format(mod_id, py_name))
+        except Exception as ex:
+            print("[STARTUP]   {} ({}) FEHLER: {}".format(mod_id, py_name, ex))
+    # DOSSIERUI Window-Layout — Hinweis fuer manuelles Laden
+    _hint_dossier_ui()
+    print("[STARTUP] Fertig")
+
+
+Rhino.RhinoApp.Idle += _load_all
+print("[STARTUP] geplant - laedt sobald Rhino idle ist")
diff --git a/rhino/werkzeuge.py b/rhino/werkzeuge.py
new file mode 100644
index 0000000..7957b7d
--- /dev/null
+++ b/rhino/werkzeuge.py
@@ -0,0 +1,58 @@
+# ! python3
+# -*- coding: utf-8 -*-
+"""
+werkzeuge.py
+WERKZEUGE-Panel: Architektur-orientierte Toolbar als React-WebView.
+Feuert Rhino-Befehle via RunScript bei Button-Klick.
+"""
+import os
+import sys
+import Rhino
+import scriptcontext as sc
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+if _HERE not in sys.path:
+    sys.path.insert(0, _HERE)
+
+import panel_base
+
+PANEL_GUID_STR = "6d9f5040-7e1f-4f2b-c4d5-f6071829304a"
+
+
+class WerkzeugeBridge(panel_base.BaseBridge):
+    def __init__(self):
+        panel_base.BaseBridge.__init__(self, "werkzeuge")
+
+    def _on_ready(self):
+        # Keine initialen Daten noetig — Toolbar ist statisch
+        pass
+
+    def handle(self, data):
+        if not isinstance(data, dict): return
+        t = data.get("type", "")
+        p = data.get("payload") or {}
+        if not isinstance(p, dict): p = {}
+        if t == "READY":
+            self._on_ready()
+        elif t == "RUN":
+            cmd = p.get("cmd")
+            if cmd and isinstance(cmd, str):
+                # Whitelist: alles muss mit "_" beginnen (Rhino-Befehl) und
+                # darf keine Zeilenumbrueche oder Semikolons enthalten.
+                cmd = cmd.strip()
+                if cmd.startswith("_") and "\n" not in cmd and ";" not in cmd:
+                    try:
+                        Rhino.RhinoApp.RunScript(cmd, False)
+                        print("[WERKZEUGE] {}".format(cmd))
+                    except Exception as ex:
+                        print("[WERKZEUGE] RunScript-Fehler:", ex)
+                else:
+                    print("[WERKZEUGE] Befehl ignoriert (kein '_' Praefix oder unsicher):", cmd)
+
+
+def _bridge_factory():
+    return WerkzeugeBridge()
+
+
+panel_base.register_and_open("werkzeuge", "WERKZEUGE", PANEL_GUID_STR, _bridge_factory,
+                             icon_spec=("W", "#3a6fa8"))
diff --git a/src/App.jsx b/src/App.jsx
new file mode 100644
index 0000000..dddf528
--- /dev/null
+++ b/src/App.jsx
@@ -0,0 +1,273 @@
+import { useState, useEffect, useMemo, useRef } from 'react'
+import GeschossManager from './components/GeschossManager'
+import EbenenManager from './components/EbenenManager'
+import AusschnittLayerDialog from './components/AusschnittLayerDialog'
+import {
+  applyAll, setActiveZeichnungsebene, setActiveEbene,
+  onMessage, notifyReady, applyVisibility,
+  getCombination, applyCombination,
+  saveCurrentAsCombination, deleteCombinationPreset,
+  saveCombinationPreset,
+} from './lib/rhinoBridge'
+
+export function recalcOkff(list) {
+  let acc = 0
+  return list.map(z => {
+    if (z.isGeschoss) {
+      const next = { ...z, okff: parseFloat(acc.toFixed(3)) }
+      acc += (z.hoehe ?? 3.0)
+      return next
+    }
+    return { ...z, okff: undefined }
+  })
+}
+
+const INITIAL_ZEICHNUNGSEBENEN = recalcOkff([
+  { id: 'eg',  name: 'EG',  isGeschoss: true, hoehe: 3.50, schnitthoehe: 1.00, visible: true },
+  { id: '1og', name: '1OG', isGeschoss: true, hoehe: 3.00, schnitthoehe: 1.00, visible: true },
+  { id: '2og', name: '2OG', isGeschoss: true, hoehe: 3.00, schnitthoehe: 1.00, visible: true },
+])
+
+const INITIAL_EBENEN = [
+  { code: '00', name: 'RASTER',         color: '#484850', lw: 0.13, visible: true, locked: false },
+  { code: '01', name: 'VERMESSUNG',     color: '#707078', lw: 0.18, visible: true, locked: false },
+  { code: '10', name: 'SITUATION',      color: '#909090', lw: 0.18, visible: true, locked: false },
+  { code: '11', name: 'STRASSE',        color: '#a89070', lw: 0.18, visible: true, locked: false },
+  { code: '12', name: 'GEBÄUDE',        color: '#888888', lw: 0.25, visible: true, locked: false },
+  { code: '13', name: 'BÄUME',          color: '#50a050', lw: 0.13, visible: true, locked: false },
+  { code: '14', name: 'HÖHENLINIEN',    color: '#909050', lw: 0.18, visible: true, locked: false },
+  { code: '20', name: 'WÄNDE',          color: '#0a0a0a', lw: 0.50, visible: true, locked: false },
+  { code: '21', name: 'TÜREN_FENSTER',  color: '#5080c8', lw: 0.25, visible: true, locked: false },
+  { code: '22', name: 'MÖBEL',          color: '#909090', lw: 0.13, visible: true, locked: false },
+  { code: '25', name: 'STÜTZEN',        color: '#c87050', lw: 0.50, visible: true, locked: false },
+  { code: '30', name: 'DECKEN',         color: '#605850', lw: 0.35, visible: true, locked: false },
+  { code: '31', name: 'DÄCHER',         color: '#7a4a3a', lw: 0.35, visible: true, locked: false },
+  { code: '35', name: 'TRÄGER',         color: '#a87858', lw: 0.50, visible: true, locked: false },
+  { code: '50', name: 'TEXT',           color: '#d0d0d0', lw: 0.13, visible: true, locked: false },
+  { code: '60', name: 'PLANGRAFIK',     color: '#c0a040', lw: 0.13, visible: true, locked: false },
+  { code: '90', name: 'REFERENZEN',     color: '#585860', lw: 0.13, visible: true, locked: false },
+  { code: '99', name: 'KONSTRUKTION',   color: '#404048', lw: 0.13, visible: true, locked: false },
+]
+
+export default function App() {
+  const [zeichnungsebenen, setZeichnungsebenen] = useState(INITIAL_ZEICHNUNGSEBENEN)
+  const [ebenen,           setEbenen]           = useState(INITIAL_EBENEN)
+  const [activeId,         setActiveId]         = useState('eg')
+  const [activeCode,       setActiveCode]       = useState('20')
+  const [appliedZ,         setAppliedZ]         = useState(INITIAL_ZEICHNUNGSEBENEN)
+  const [appliedE,         setAppliedE]         = useState(INITIAL_EBENEN)
+  const [zMode,            setZMode]            = useState('active')
+  const [eMode,            setEMode]            = useState('all')
+  const [hatchPatterns,    setHatchPatterns]    = useState(['Solid', 'Hatch1', 'Hatch2', 'Hatch3', 'Plus', 'Squares', 'Grid', 'Grid60'])
+  // Ebenenkombinationen (geteilter Store mit Ausschnitten)
+  const [combinations,     setCombinations]     = useState([])         // Liste { name, layers }
+  const [activeCombName,   setActiveCombName]   = useState(null)       // null = "Eigene"
+  // Dialog fuer "alle bearbeiten" (Pencil-Button)
+  const [combDialog,       setCombDialog]       = useState(null)       // { layers, presets } oder null
+  const wantCombDialogRef = useRef(false)
+
+  useEffect(() => {
+    onMessage('STATE_SYNC', ({ zeichnungsebenen: z, ebenen: e, hatchPatterns: hp }) => {
+      if (z) {
+        const r = recalcOkff(z); setZeichnungsebenen(r); setAppliedZ(r)
+        const active = r.find(zz => zz.id === activeId) || r[0]
+        if (active) {
+          setActiveZeichnungsebene(active)
+          // Auch den Sublayer-Code aktiv setzen, damit Rhino's Current-Layer
+          // beim Panel-Start sofort auf der Wahl im Panel landet (sonst bleibt
+          // "Default" und neue Objekte landen dort).
+          if (activeCode) setActiveEbene(activeCode)
+        }
+      }
+      if (e) { setEbenen(e); setAppliedE(e) }
+      if (Array.isArray(hp) && hp.length > 0) setHatchPatterns(hp)
+    })
+    onMessage('COMBINATION_DATA', ({ layers, presets }) => {
+      setCombinations(presets || [])
+      if (wantCombDialogRef.current) {
+        wantCombDialogRef.current = false
+        setCombDialog({ layers: layers || [], presets: presets || [] })
+      } else if (combDialog) {
+        // Dialog ist offen — Layer-Liste live aktualisieren (z.B. nach Preset-Save)
+        setCombDialog(d => d ? { ...d, layers: layers || d.layers, presets: presets || [] } : d)
+      }
+    })
+    onMessage('FIRST_RUN', () => {
+      applyAll(INITIAL_ZEICHNUNGSEBENEN, INITIAL_EBENEN)
+      setAppliedZ(INITIAL_ZEICHNUNGSEBENEN)
+      setAppliedE(INITIAL_EBENEN)
+      const active = INITIAL_ZEICHNUNGSEBENEN.find(zz => zz.id === activeId) || INITIAL_ZEICHNUNGSEBENEN[0]
+      if (active) {
+        setActiveZeichnungsebene(active)
+        if (activeCode) setActiveEbene(activeCode)
+      }
+    })
+    notifyReady()
+    // Initial Liste der Kombinationen holen
+    setTimeout(() => getCombination(), 200)
+
+    // Native Browser-Context-Menu global unterdruecken
+    const blockContext = (ev) => ev.preventDefault()
+    document.addEventListener('contextmenu', blockContext)
+    return () => document.removeEventListener('contextmenu', blockContext)
+  }, [])
+
+  // Sichtbarkeit live anwenden — bei relevanten Aenderungen
+  const visibilityKey = useMemo(() => (
+    activeId + '|' + activeCode + '|' + zMode + '|' + eMode + '|' +
+    zeichnungsebenen.map(z => `${z.id}:${z.visible !== false ? 1 : 0}`).join(',') + '|' +
+    ebenen.map(e => `${e.code}:${e.visible !== false ? 1 : 0}:${e.locked === true ? 1 : 0}`).join(',')
+  ), [activeId, activeCode, zMode, eMode, zeichnungsebenen, ebenen])
+
+  useEffect(() => {
+    const activeZ = zeichnungsebenen.find(z => z.id === activeId)
+    if (activeZ) applyVisibility(activeZ, zeichnungsebenen, activeCode, ebenen, zMode, eMode)
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [visibilityKey])
+
+  // Auto-Apply bei strukturellen Aenderungen (add/remove/rename) UND
+  // wenn die Ebenen-Settings (z.B. fill) sich aendern — Python braucht den
+  // neuen Stand in doc.Strings damit Auto-Fill und 'Nach Ebene' korrekt lesen.
+  // Kanonische Signatur: leere/None-Fills sind alle aequivalent — sonst loest
+  // schon das blosse Oeffnen+Schliessen des Settings-Dialogs ein applyAll aus
+  // (Dialog initialisiert fill mit Default-Werten).
+  const fillSig = (e) => {
+    const f = e.fill
+    if (!f || !f.pattern || f.pattern === 'None') return ''
+    return [f.pattern, f.source || 'layer', f.color || '', f.scale ?? 1, f.rotation ?? 0].join('|')
+  }
+  const structureKey = useMemo(() => (
+    zeichnungsebenen.map(z => `${z.id}:${z.name}:${z.isGeschoss ? 1 : 0}`).join(',') + '|' +
+    ebenen.map(e => `${e.code}:${e.name}:${fillSig(e)}`).join(',')
+  ), [zeichnungsebenen, ebenen])
+
+  const appliedStructureKey = useMemo(() => (
+    appliedZ.map(z => `${z.id}:${z.name}:${z.isGeschoss ? 1 : 0}`).join(',') + '|' +
+    appliedE.map(e => `${e.code}:${e.name}:${fillSig(e)}`).join(',')
+  ), [appliedZ, appliedE])
+
+  useEffect(() => {
+    if (structureKey === appliedStructureKey) return
+    const t = setTimeout(() => {
+      applyAll(zeichnungsebenen, ebenen)
+      setAppliedZ(zeichnungsebenen)
+      setAppliedE(ebenen)
+    }, 200)
+    return () => clearTimeout(t)
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [structureKey, appliedStructureKey])
+
+  // --- Ebenen-Kombinationen ----------------------------------------------
+  const handlePickCombination = (name) => {
+    if (!name) { setActiveCombName(null); return }
+    const preset = combinations.find(p => p.name === name)
+    if (!preset) return
+    // Eye-State bevorzugen wenn im Preset vorhanden (= verlustfreie Wiederherstellung,
+    // beruecksichtigt z_mode/e_mode); fallback auf doc.Layer-Liste fuer alte Presets.
+    applyCombination({
+      layers:                preset.layers || [],
+      dossierEbenen:           preset.dossierEbenen,
+      dossierZeichnungsebenen: preset.dossierZeichnungsebenen,
+    })
+    setActiveCombName(name)
+  }
+  const handleSaveCurrentCombination = () => {
+    const suggested = activeCombName || `Kombi ${combinations.length + 1}`
+    const name = (window.prompt('Name für Ebenenkombination:', suggested) || '').trim()
+    if (!name) return
+    if (combinations.some(p => p.name === name) &&
+        !window.confirm(`"${name}" ueberschreiben?`)) return
+    saveCurrentAsCombination(name)
+    setActiveCombName(name)
+  }
+  const handleDeleteCombination = (name) => {
+    if (!name) return
+    if (!window.confirm(`Ebenenkombination "${name}" löschen?`)) return
+    deleteCombinationPreset(name)
+    if (activeCombName === name) setActiveCombName(null)
+  }
+  const handleOpenCombDialog = () => {
+    wantCombDialogRef.current = true
+    getCombination()
+  }
+  // Wenn der User Sichtbarkeit/Lock manuell aendert -> "Eigene".
+  // Wird direkt von EbenenManager aufgerufen, kein Effect-Race.
+  const handleUserVisibilityChange = () => {
+    if (activeCombName !== null) setActiveCombName(null)
+  }
+
+  const handleActiveChange = (id) => {
+    setActiveId(id)
+    const z = zeichnungsebenen.find(x => x.id === id)
+    if (z) {
+      setActiveZeichnungsebene(z)
+      if (activeCode) setActiveEbene(activeCode)
+    }
+  }
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column',
+      height: '100vh', overflow: 'hidden',
+      background: 'var(--bg-base)',
+      position: 'relative',
+    }}>
+      <div style={{ flex: 1, overflowY: 'auto' }}>
+        <GeschossManager
+          zeichnungsebenen={zeichnungsebenen}
+          activeId={activeId}
+          onActiveChange={handleActiveChange}
+          onChange={(updated) => setZeichnungsebenen(recalcOkff(updated))}
+          recalcOkff={recalcOkff}
+          mode={zMode}
+          onModeChange={setZMode}
+        />
+        <EbenenManager
+          ebenen={ebenen}
+          activeCode={activeCode}
+          onActiveChange={(code) => { setActiveCode(code); setActiveEbene(code) }}
+          onChange={setEbenen}
+          mode={eMode}
+          onModeChange={setEMode}
+          hatchPatterns={hatchPatterns}
+          combinations={combinations}
+          activeCombName={activeCombName}
+          onPickCombination={handlePickCombination}
+          onSaveCurrentCombination={handleSaveCurrentCombination}
+          onDeleteCombination={handleDeleteCombination}
+          onEditCombinations={handleOpenCombDialog}
+          onUserVisibilityChange={handleUserVisibilityChange}
+        />
+      </div>
+
+      {combDialog && (
+        <AusschnittLayerDialog
+          snapName="Ebenenkombinationen bearbeiten"
+          layers={combDialog.layers}
+          presets={combDialog.presets}
+          onClose={() => setCombDialog(null)}
+          onSave={(layers) => {
+            applyCombination(layers)
+            setActiveCombName(null)
+            setCombDialog(null)
+          }}
+          onSavePreset={(name, layers) => {
+            saveCombinationPreset(name, layers)
+            setCombDialog(d => d ? {
+              ...d,
+              presets: [...d.presets.filter(p => p.name !== name), { name, layers }],
+            } : d)
+          }}
+          onDeletePreset={(name) => {
+            deleteCombinationPreset(name)
+            setCombDialog(d => d ? {
+              ...d,
+              presets: d.presets.filter(p => p.name !== name),
+            } : d)
+            if (activeCombName === name) setActiveCombName(null)
+          }}
+        />
+      )}
+    </div>
+  )
+}
diff --git a/src/AusschnitteApp.jsx b/src/AusschnitteApp.jsx
new file mode 100644
index 0000000..0f51ec9
--- /dev/null
+++ b/src/AusschnitteApp.jsx
@@ -0,0 +1,515 @@
+import { useState, useEffect, useMemo } from 'react'
+import Icon from './components/Icon'
+import ContextMenu from './components/ContextMenu'
+import AusschnittLayerDialog from './components/AusschnittLayerDialog'
+import {
+  onMessage, notifyReady,
+  listAusschnitte, saveAusschnitt, updateAusschnitt,
+  restoreAusschnitt, applyAusschnittToDetail,
+  renameAusschnitt, deleteAusschnitt,
+  setAusschnittFolder, setAusschnittScale,
+  duplicateAusschnitt, addAusschnittFolder, removeAusschnittFolder,
+  getAusschnittLayers, updateAusschnittLayers,
+  saveLayerPreset, deleteLayerPreset,
+} from './lib/rhinoBridge'
+
+function EditableInline({ value, onCommit, autoEdit, style, fontSize }) {
+  const [editing, setEditing] = useState(autoEdit || false)
+  const [val, setVal] = useState(value)
+  useEffect(() => { setVal(value) }, [value])
+  useEffect(() => { if (autoEdit) setEditing(true) }, [autoEdit])
+
+  const commit = () => {
+    const trimmed = (val ?? '').trim()
+    if (trimmed && trimmed !== value) onCommit(trimmed)
+    else setVal(value)
+    setEditing(false)
+  }
+  if (editing) {
+    return (
+      <input
+        value={val}
+        autoFocus
+        onChange={(ev) => setVal(ev.target.value)}
+        onBlur={commit}
+        onKeyDown={(ev) => {
+          if (ev.key === 'Enter') commit()
+          if (ev.key === 'Escape') { setVal(value); setEditing(false) }
+        }}
+        onClick={(ev) => ev.stopPropagation()}
+        style={{ ...style, fontSize, padding: '2px 6px' }}
+      />
+    )
+  }
+  return (
+    <span
+      onDoubleClick={(ev) => { ev.stopPropagation(); setVal(value); setEditing(true) }}
+      style={{ ...style, fontSize, cursor: 'text' }}
+    >{value}</span>
+  )
+}
+
+function ScaleCell({ snap, onChange }) {
+  const [editing, setEditing] = useState(false)
+  const [val, setVal] = useState(snap.scale || '')
+  useEffect(() => { setVal(snap.scale || '') }, [snap.scale])
+
+  const commit = () => {
+    onChange(snap.id, val.trim())
+    setEditing(false)
+  }
+  if (editing) {
+    return (
+      <input
+        value={val}
+        autoFocus
+        onChange={(ev) => setVal(ev.target.value)}
+        onBlur={commit}
+        onKeyDown={(ev) => {
+          if (ev.key === 'Enter') commit()
+          if (ev.key === 'Escape') { setVal(snap.scale || ''); setEditing(false) }
+        }}
+        onClick={(ev) => ev.stopPropagation()}
+        placeholder="1:50"
+        style={{ width: 64, fontSize: 10, padding: '2px 6px', textAlign: 'right' }}
+      />
+    )
+  }
+  return (
+    <span
+      onDoubleClick={(ev) => { ev.stopPropagation(); setEditing(true) }}
+      className={snap.scale ? 'chip chip-accent' : 'chip'}
+      style={{
+        fontSize: 9, cursor: 'text',
+        fontFamily: 'var(--font-mono)',
+        flexShrink: 0,
+      }}
+      title={snap.scale ? `Maßstab ${snap.scale} — wird auf Detail angewendet` : 'Doppelklick um Maßstab einzutragen (z.B. 1:50)'}
+    >{snap.scale || '—:—'}</span>
+  )
+}
+
+function OrientationBadge({ orientation }) {
+  const variant = orientation === 'perspective' ? {
+    icon: 'view_in_ar', color: 'var(--accent)',
+    title: 'Perspektive',
+  } : orientation === 'horizontal' ? {
+    icon: 'align_horizontal_center', color: 'var(--active)',
+    title: 'Horizontaler Schnitt (Grundriss)',
+  } : {
+    icon: 'align_vertical_center', color: 'var(--warn)',
+    title: 'Vertikaler Schnitt (Schnitt / Ansicht)',
+  }
+  return (
+    <span
+      title={variant.title}
+      style={{
+        display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+        width: 24, height: 24, flexShrink: 0,
+        borderRadius: 999,
+        background: 'var(--bg-input)',
+        color: variant.color,
+      }}
+    >
+      <Icon name={variant.icon} size={14} />
+    </span>
+  )
+}
+
+function AusschnittCard({ snap, onClick, onContextMenu, onMenuClick, onRename, onScaleChange, onDragStart, onDragEnd, dragging }) {
+  return (
+    <div
+      draggable
+      onClick={onClick}
+      onContextMenu={onContextMenu}
+      onDragStart={onDragStart}
+      onDragEnd={onDragEnd}
+      style={{
+        display: 'flex', alignItems: 'center', gap: 8,
+        padding: '6px 8px',
+        border: '1px solid var(--border-light)',
+        borderRadius: 'var(--r)',
+        background: 'var(--bg-input)',
+        cursor: 'grab', userSelect: 'none',
+        marginBottom: 4,
+        opacity: dragging ? 0.4 : 1,
+        transition: 'background 0.14s, border-color 0.14s, opacity 0.14s',
+      }}
+      onMouseEnter={(ev) => { ev.currentTarget.style.background = 'var(--bg-item-hover)' }}
+      onMouseLeave={(ev) => { ev.currentTarget.style.background = 'var(--bg-input)' }}
+    >
+      <OrientationBadge orientation={snap.orientation} />
+      <EditableInline
+        value={snap.name}
+        onCommit={(n) => onRename(snap.id, n)}
+        fontSize={11}
+        style={{
+          flex: 1, minWidth: 0,
+          color: 'var(--text-primary)', fontWeight: 500,
+          overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+        }}
+      />
+      <ScaleCell snap={snap} onChange={onScaleChange} />
+      <button
+        className="btn-icon-sm"
+        onClick={(ev) => { ev.stopPropagation(); onMenuClick(ev) }}
+        title="Aktionen"
+      >
+        <Icon name="more_vert" size={14} />
+      </button>
+    </div>
+  )
+}
+
+function FolderCard({
+  name, count, collapsed, onToggle, onContextMenu, onMenuClick,
+  onDragOver, onDragLeave, onDrop, dragOver, children,
+}) {
+  return (
+    <div
+      onContextMenu={onContextMenu}
+      onDragOver={onDragOver}
+      onDragLeave={onDragLeave}
+      onDrop={onDrop}
+      style={{
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+        background: dragOver ? 'var(--accent-dim)' : 'var(--bg-section)',
+        marginBottom: 8,
+        padding: 8,
+        transition: 'background 0.14s, border-color 0.14s',
+        borderColor: dragOver ? 'var(--accent-border)' : 'var(--border)',
+      }}
+    >
+      <div
+        onClick={onToggle}
+        style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          cursor: 'pointer', userSelect: 'none',
+          padding: 2,
+        }}
+      >
+        <span style={{
+          transform: collapsed ? 'rotate(-90deg)' : 'rotate(0deg)',
+          transition: 'transform 0.2s cubic-bezier(0.4, 0, 0.2, 1)',
+          color: 'var(--text-muted)', display: 'inline-flex',
+        }}>
+          <Icon name="arrow_drop_down" size={16} />
+        </span>
+        <Icon name="folder" size={14} style={{ color: 'var(--warn)' }} />
+        <span style={{ flex: 1, fontSize: 11, fontWeight: 500, color: 'var(--text-primary)' }}>{name}</span>
+        <span className="chip" style={{ fontSize: 8 }}>{count}</span>
+        <button
+          className="btn-icon-sm"
+          onClick={(ev) => { ev.stopPropagation(); onMenuClick(ev) }}
+          title="Ordner-Aktionen"
+        >
+          <Icon name="more_vert" size={14} />
+        </button>
+      </div>
+      {!collapsed && (
+        <div style={{ marginTop: 6, display: 'flex', flexDirection: 'column' }}>
+          {children || (
+            <div style={{
+              padding: '10px 6px', fontSize: 10, color: 'var(--text-muted)',
+              textAlign: 'center', fontStyle: 'italic',
+            }}>
+              Leer — Ausschnitte hier ablegen.
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  )
+}
+
+function RootDropZone({ children, onDragOver, onDragLeave, onDrop, dragOver, empty }) {
+  return (
+    <div
+      onDragOver={onDragOver}
+      onDragLeave={onDragLeave}
+      onDrop={onDrop}
+      style={{
+        background: dragOver ? 'var(--accent-dim)' : 'transparent',
+        border: '1px dashed transparent',
+        borderColor: dragOver ? 'var(--accent-border)' : 'transparent',
+        borderRadius: 'var(--r-lg)',
+        padding: dragOver || empty ? 6 : 0,
+        marginBottom: empty ? 0 : 8,
+        transition: 'background 0.14s, border-color 0.14s, padding 0.14s',
+      }}
+    >
+      {children}
+    </div>
+  )
+}
+
+export default function AusschnitteApp() {
+  const [snaps,         setSnaps]         = useState([])
+  const [extraFolders,  setExtraFolders]  = useState([])
+  const [presets,       setPresets]       = useState([])
+  const [newName,       setNewName]       = useState('')
+  const [ctxMenu,       setCtxMenu]       = useState(null)
+  const [collapsed,     setCollapsed]     = useState({})
+  const [draggingId,    setDraggingId]    = useState(null)
+  const [dragTarget,    setDragTarget]    = useState(null)
+  const [layerDialog,   setLayerDialog]   = useState(null)
+
+  useEffect(() => {
+    onMessage('LIST', ({ snapshots, folders, presets }) => {
+      setSnaps(snapshots || [])
+      setExtraFolders(folders || [])
+      setPresets(presets || [])
+    })
+    onMessage('LAYERS_DATA', ({ id, name, layers, presets }) => {
+      setLayerDialog({ id, name, layers: layers || [], presets: presets || [] })
+    })
+    notifyReady()
+    const blockContext = (ev) => ev.preventDefault()
+    document.addEventListener('contextmenu', blockContext)
+    return () => document.removeEventListener('contextmenu', blockContext)
+  }, [])
+
+  const groups = useMemo(() => {
+    const map = {}
+    snaps.forEach(s => {
+      const f = s.folder || ''
+      if (!map[f]) map[f] = []
+      map[f].push(s)
+    })
+    return map
+  }, [snaps])
+
+  const allFolders = useMemo(() => {
+    const set = new Set(extraFolders)
+    snaps.forEach(s => { if (s.folder) set.add(s.folder) })
+    return [...set].sort((a, b) => a.localeCompare(b))
+  }, [snaps, extraFolders])
+
+  const handleSave = () => {
+    const name = newName.trim() || `Ausschnitt ${snaps.length + 1}`
+    saveAusschnitt(name)
+    setNewName('')
+  }
+
+  const handleAddFolder = () => {
+    const name = window.prompt('Name für neuen Ordner:')
+    if (name && name.trim()) addAusschnittFolder(name.trim())
+  }
+
+  const ctxItems = (id) => [
+    { label: 'Wiederherstellen',    icon: 'restore',         onClick: () => restoreAusschnitt(id) },
+    { label: 'Auf Detail anwenden', icon: 'crop_landscape',  onClick: () => applyAusschnittToDetail(id) },
+    { divider: true },
+    { label: 'Sichtbarkeit bearbeiten…', icon: 'layers',     onClick: () => getAusschnittLayers(id) },
+    { divider: true },
+    { label: 'Duplizieren',         icon: 'content_copy',    onClick: () => duplicateAusschnitt(id) },
+    { label: 'Aktualisieren',       icon: 'sync',            onClick: () => updateAusschnitt(id) },
+    { divider: true },
+    { label: 'Löschen',             icon: 'delete', danger: true, onClick: () => deleteAusschnitt(id) },
+  ]
+
+  const folderCtxItems = (folderName) => [
+    { label: 'Ordner umbenennen',   icon: 'edit', onClick: () => {
+      const newName = window.prompt('Neuer Ordnername:', folderName)
+      if (newName && newName.trim() && newName !== folderName) {
+        snaps.filter(s => s.folder === folderName).forEach(s => setAusschnittFolder(s.id, newName.trim()))
+        addAusschnittFolder(newName.trim())
+        removeAusschnittFolder(folderName)
+      }
+    }},
+    { divider: true },
+    { label: 'Ordner löschen',      icon: 'folder_off', danger: true, onClick: () => {
+      if (window.confirm(`Ordner "${folderName}" löschen? Ausschnitte werden zur Wurzel verschoben.`)) {
+        removeAusschnittFolder(folderName)
+      }
+    }},
+  ]
+
+  const handleDrop = (folderName) => (ev) => {
+    ev.preventDefault()
+    setDragTarget(null)
+    const id = ev.dataTransfer.getData('text/plain') || draggingId
+    if (id) setAusschnittFolder(id, folderName || '')
+    setDraggingId(null)
+  }
+
+  const handleDragOver = (folderName) => (ev) => {
+    ev.preventDefault()
+    ev.dataTransfer.dropEffect = 'move'
+    setDragTarget(folderName || 'root')
+  }
+
+  const handleDragLeave = () => () => setDragTarget(null)
+
+  const renderSnapshot = (s) => (
+    <AusschnittCard
+      key={s.id}
+      snap={s}
+      dragging={draggingId === s.id}
+      onClick={() => restoreAusschnitt(s.id)}
+      onContextMenu={(ev) => { ev.preventDefault(); setCtxMenu({ x: ev.clientX, y: ev.clientY, id: s.id, kind: 'snap' }) }}
+      onMenuClick={(ev) => setCtxMenu({ x: ev.clientX, y: ev.clientY, id: s.id, kind: 'snap' })}
+      onRename={(id, name) => renameAusschnitt(id, name)}
+      onScaleChange={(id, scale) => setAusschnittScale(id, scale)}
+      onDragStart={(ev) => {
+        ev.dataTransfer.setData('text/plain', s.id)
+        ev.dataTransfer.effectAllowed = 'move'
+        setDraggingId(s.id)
+      }}
+      onDragEnd={() => { setDraggingId(null); setDragTarget(null) }}
+    />
+  )
+
+  const actions = (
+    <div style={{ display: 'flex', gap: 4 }}>
+      <button className="btn-icon-tonal" onClick={handleAddFolder} title="Neuer Ordner">
+        <Icon name="create_new_folder" size={14} />
+      </button>
+      <button className="btn-icon-tonal" onClick={() => listAusschnitte()} title="Aktualisieren">
+        <Icon name="refresh" size={14} />
+      </button>
+    </div>
+  )
+
+  const rootItems = groups[''] || []
+  const isEmpty = snaps.length === 0 && allFolders.length === 0
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column',
+      height: '100vh', overflow: 'hidden',
+      background: 'var(--bg-base)',
+      position: 'relative',
+    }}>
+      {/* Fixed Header — wie Layouts/Overrides Pattern */}
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 6,
+        padding: '8px 10px',
+        borderBottom: '1px solid var(--border)',
+        flexShrink: 0,
+      }}>
+        <span style={{ flex: 1, fontWeight: 600, letterSpacing: '0.08em',
+                       color: 'var(--text-primary)' }}>
+          AUSSCHNITTE
+        </span>
+        <span className="chip" style={{ fontSize: 8 }}>{snaps.length}</span>
+        {actions}
+      </div>
+
+      <div style={{ flex: 1, overflowY: 'auto', padding: 8 }}>
+          {/* Save-Bar als Card */}
+          <div style={{
+            display: 'flex', alignItems: 'center', gap: 6,
+            padding: 8,
+            border: '1px solid var(--border)',
+            borderRadius: 'var(--r-lg)',
+            background: 'var(--bg-section)',
+            marginBottom: 8,
+            marginTop: 6,
+          }}>
+            <input
+              value={newName}
+              onChange={(ev) => setNewName(ev.target.value)}
+              onKeyDown={(ev) => { if (ev.key === 'Enter') handleSave() }}
+              placeholder="Name für neuen Ausschnitt…"
+              style={{ flex: 1, fontSize: 11, fontFamily: 'var(--font)', minWidth: 0 }}
+            />
+            <button className="btn-add" onClick={handleSave} title="Ausschnitt speichern">
+              <Icon name="add" size={16} />
+            </button>
+          </div>
+
+          {isEmpty ? (
+            <div style={{
+              padding: '32px 16px', textAlign: 'center',
+              color: 'var(--text-muted)', fontSize: 11,
+              border: '1px dashed var(--border)',
+              borderRadius: 'var(--r-lg)',
+              background: 'var(--bg-section)',
+            }}>
+              <Icon name="photo_library" size={32} style={{ color: 'var(--text-muted)', opacity: 0.5 }} />
+              <div style={{ marginTop: 8 }}>Noch keine Ausschnitte.</div>
+              <div style={{ marginTop: 4, fontSize: 10 }}>Oben einen Namen eingeben und <Icon name="add" size={11} /> klicken.</div>
+            </div>
+          ) : (
+            <>
+              {/* Root-Snapshots */}
+              <RootDropZone
+                dragOver={dragTarget === 'root'}
+                empty={rootItems.length === 0}
+                onDragOver={handleDragOver('')}
+                onDragLeave={handleDragLeave()}
+                onDrop={handleDrop('')}
+              >
+                {rootItems.map(s => renderSnapshot(s))}
+                {rootItems.length === 0 && draggingId && (
+                  <div style={{
+                    padding: '8px 14px', fontSize: 10, color: 'var(--text-muted)',
+                    textAlign: 'center', fontStyle: 'italic',
+                  }}>Hier ablegen für Wurzel</div>
+                )}
+              </RootDropZone>
+
+              {/* Ordner-Cards */}
+              {allFolders.map(folder => {
+                const isCollapsed = !!collapsed[folder]
+                const items = groups[folder] || []
+                return (
+                  <FolderCard
+                    key={folder}
+                    name={folder}
+                    count={items.length}
+                    collapsed={isCollapsed}
+                    dragOver={dragTarget === folder}
+                    onToggle={() => setCollapsed(c => ({ ...c, [folder]: !c[folder] }))}
+                    onContextMenu={(ev) => { ev.preventDefault(); setCtxMenu({ x: ev.clientX, y: ev.clientY, name: folder, kind: 'folder' }) }}
+                    onMenuClick={(ev) => setCtxMenu({ x: ev.clientX, y: ev.clientY, name: folder, kind: 'folder' })}
+                    onDragOver={handleDragOver(folder)}
+                    onDragLeave={handleDragLeave()}
+                    onDrop={handleDrop(folder)}
+                  >
+                    {items.length > 0 ? items.map(s => renderSnapshot(s)) : null}
+                  </FolderCard>
+                )
+              })}
+            </>
+          )}
+        <div style={{ padding: '12px 4px 0', fontSize: 9, color: 'var(--text-muted)',
+                      lineHeight: 1.6, fontStyle: 'italic' }}>
+          Drag & Drop auf Ordner-Card zum Verschieben · Doppelklick auf Name/Maßstab = bearbeiten · ⋮ für Aktionen
+        </div>
+      </div>
+
+      {ctxMenu && (
+        <ContextMenu
+          x={ctxMenu.x} y={ctxMenu.y}
+          items={ctxMenu.kind === 'folder' ? folderCtxItems(ctxMenu.name) : ctxItems(ctxMenu.id)}
+          onClose={() => setCtxMenu(null)}
+        />
+      )}
+
+      {layerDialog && (
+        <AusschnittLayerDialog
+          snapName={layerDialog.name}
+          layers={layerDialog.layers}
+          presets={layerDialog.presets}
+          onSave={(layers) => {
+            updateAusschnittLayers(layerDialog.id,
+              layers.map(l => ({ id: l.id, visible: l.visible, locked: l.locked })))
+            setLayerDialog(null)
+          }}
+          onClose={() => setLayerDialog(null)}
+          onSavePreset={(name, layers) => {
+            saveLayerPreset(name, layers)
+            setLayerDialog(d => d ? { ...d, presets: [...d.presets.filter(p => p.name !== name), { name, layers }] } : d)
+          }}
+          onDeletePreset={(name) => {
+            deleteLayerPreset(name)
+            setLayerDialog(d => d ? { ...d, presets: d.presets.filter(p => p.name !== name) } : d)
+          }}
+        />
+      )}
+    </div>
+  )
+}
diff --git a/src/DimensionenApp.jsx b/src/DimensionenApp.jsx
new file mode 100644
index 0000000..3b542d4
--- /dev/null
+++ b/src/DimensionenApp.jsx
@@ -0,0 +1,377 @@
+import { useEffect, useState, useRef } from 'react'
+import Icon from './components/Icon'
+import {
+  onMessage, notifyReady,
+  setRefPoint, setCoordSystem,
+  setDimPosition, setDimDimension, setDimRotationZ,
+  setCircleRadius, setLineLength, setRectangleDims,
+} from './lib/rhinoBridge'
+
+// ---- Helpers --------------------------------------------------------------
+
+const REF_CODES = ['min', 'mid', 'max']  // row/col mapping
+const REF_LABELS = { min: 'min', mid: 'mid', max: 'max' }
+
+function fmtNum(v) {
+  if (v == null) return ''
+  if (typeof v !== 'number') return String(v)
+  // 4 Nachkommastellen, aber unnoetige Nullen weg
+  return Number(v.toFixed(4)).toString()
+}
+
+// Input-Komponente: zeigt formatierten Wert, sendet onCommit bei Enter/Blur.
+// Verhindert Update waehrend des Tippens, damit der Cursor nicht springt.
+function NumInput({ value, onCommit, disabled, suffix, width }) {
+  const [text, setText] = useState(fmtNum(value))
+  const [focused, setFocused] = useState(false)
+  useEffect(() => { if (!focused) setText(fmtNum(value)) }, [value, focused])
+  const commit = () => {
+    const v = parseFloat(text.replace(',', '.'))
+    if (!isNaN(v) && v !== value) onCommit(v)
+    else setText(fmtNum(value))  // ungueltig → zurueck auf alten Wert
+  }
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 4, flex: width ? 0 : 1, width }}>
+      <input
+        type="text"
+        value={text}
+        disabled={disabled}
+        onChange={(e) => setText(e.target.value)}
+        onFocus={(e) => { setFocused(true); e.target.select() }}
+        onBlur={() => { setFocused(false); commit() }}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter') { e.target.blur() }
+          else if (e.key === 'Escape') { setText(fmtNum(value)); e.target.blur() }
+        }}
+        style={{ flex: 1, width: '100%', fontFamily: 'DM Mono, monospace', fontSize: 11, textAlign: 'right' }}
+      />
+      {suffix && <span style={{ fontSize: 10, color: 'var(--text-muted)', flexShrink: 0 }}>{suffix}</span>}
+    </div>
+  )
+}
+
+// 9-Punkt-Referenzpunkt-Selektor im Illustrator-Stil: sichtbarer BBox-Rahmen,
+// die Punkte sitzen AUF Ecken / Kantenmitten / Zentrum.
+function RefPointGrid({ ref, onChange }) {
+  const SIZE = 26      // Aussenkanten-Quadrat (px)
+  const DOT  = 5       // Punkt-Durchmesser (px)
+  // Position pro Code: 0% (min), 50% (mid), 100% (max)
+  const pct = (c) => c === 'min' ? '0%' : c === 'max' ? '100%' : '50%'
+  return (
+    <div style={{
+      position: 'relative',
+      width: SIZE, height: SIZE,
+      border: '1px solid var(--text-muted)',
+      background: 'transparent',
+      flexShrink: 0,
+    }}>
+      {REF_CODES.map(yc => REF_CODES.map(xc => {
+        const active = ref.x === xc && ref.y === yc
+        // yc 'max' = top in user mental model (Vectorworks/Illustrator)
+        const topPct = yc === 'max' ? '0%' : yc === 'min' ? '100%' : '50%'
+        return (
+          <button
+            key={`${xc}-${yc}`}
+            onClick={() => onChange({ ...ref, x: xc, y: yc })}
+            title={`X=${xc}, Y=${yc}`}
+            style={{
+              position: 'absolute',
+              left: pct(xc), top: topPct,
+              transform: 'translate(-50%, -50%)',
+              width: DOT, height: DOT, padding: 0,
+              borderRadius: 0,                   // eckig wie Illustrator
+              background: active ? 'var(--accent)' : 'var(--text-muted)',
+              border: 'none',
+              cursor: 'pointer',
+              transition: 'background 0.1s',
+            }}
+            onMouseEnter={(e) => { if (!active) e.currentTarget.style.background = 'var(--text-primary)' }}
+            onMouseLeave={(e) => { if (!active) e.currentTarget.style.background = 'var(--text-muted)' }}
+          />
+        )
+      }))}
+    </div>
+  )
+}
+
+// Z-Referenz-Selektor (Bottom / Mid / Top) — kompakt, nur Icons.
+function RefZSelector({ z, onChange }) {
+  return (
+    <div style={{ display: 'flex', gap: 2 }}>
+      {[
+        { code: 'max', icon: 'vertical_align_top',    title: 'Z = Top' },
+        { code: 'mid', icon: 'vertical_align_center', title: 'Z = Mid' },
+        { code: 'min', icon: 'vertical_align_bottom', title: 'Z = Bottom' },
+      ].map(opt => (
+        <button
+          key={opt.code}
+          onClick={() => onChange(opt.code)}
+          className={z === opt.code ? 'btn-contained' : 'btn-outlined'}
+          style={{
+            padding: '2px 5px', fontSize: 10,
+            display: 'flex', alignItems: 'center', justifyContent: 'center',
+          }}
+          title={opt.title}
+        >
+          <Icon name={opt.icon} size={12} />
+        </button>
+      ))}
+    </div>
+  )
+}
+
+// Inline-Label vor einem Input — minimal, knackig
+function Field({ label, children, style }) {
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 4, ...style }}>
+      <span style={{
+        width: 12, fontSize: 10, fontWeight: 600,
+        color: 'var(--text-muted)', textAlign: 'center',
+        fontFamily: 'DM Mono, monospace', flexShrink: 0,
+      }}>
+        {label}
+      </span>
+      {children}
+    </div>
+  )
+}
+
+// ---- Hauptkomponente ------------------------------------------------------
+
+export default function DimensionenApp() {
+  const [state, setState] = useState({
+    selection:   { count: 0, type: 'none' },
+    refPoint:    { x: 'min', y: 'min', z: 'mid' },
+    coordSystem: 'world',
+    position:    null,
+    dimensions:  null,
+    shape:       null,
+    planeName:   'Welt',
+  })
+  const [rotationDelta, setRotationDelta] = useState(0)
+
+  useEffect(() => {
+    onMessage('STATE', (s) => setState((prev) => ({ ...prev, ...s })))
+    notifyReady()
+  }, [])
+
+  const sel    = state.selection || { count: 0, type: 'none' }
+  const ref    = state.refPoint  || { x: 'min', y: 'min', z: 'mid' }
+  const pos    = state.position
+  const dims   = state.dimensions
+  const shape  = state.shape
+  const hasSelection = sel.count > 0 && pos != null
+
+  const onRefChange = (next) => setRefPoint(next.x, next.y, next.z)
+  const onCoordChange = (mode) => setCoordSystem(mode)
+
+  // Selektions-Beschriftung
+  const selLabel = () => {
+    if (sel.count === 0) return 'Keine Selektion'
+    if (sel.count === 1) {
+      const map = {
+        curve: 'Kurve', brep: 'Brep', mesh: 'Mesh', extrusion: 'Extrusion',
+        block: 'Block', point: 'Punkt', text: 'Text', other: 'Objekt',
+      }
+      let base = map[sel.type] || '1 Objekt'
+      if (shape?.type === 'circle')    base = 'Kreis'
+      if (shape?.type === 'rectangle') base = 'Rechteck'
+      if (shape?.type === 'line')      base = 'Linie'
+      return '1 ' + base
+    }
+    return `${sel.count} Objekte`
+  }
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column',
+      height: '100vh', overflow: 'hidden',
+      background: 'var(--bg-base)', color: 'var(--text-primary)',
+      fontFamily: 'var(--font)', fontSize: 11,
+    }}>
+      <div style={{ flex: 1, overflowY: 'auto', overflowX: 'hidden', padding: 6 }}>
+
+        {/* Header: Selektions-Info + World/CPlane */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6, marginBottom: 6,
+          padding: '5px 8px',
+          background: 'var(--bg-section)',
+          border: '1px solid var(--border)',
+          borderRadius: 'var(--r-lg)',
+        }}>
+          <Icon name="select_all" size={14} style={{ color: 'var(--text-muted)' }} />
+          <span style={{ flex: 1, fontWeight: 500 }}>{selLabel()}</span>
+          <div style={{ display: 'flex', gap: 2 }}>
+            <button
+              onClick={() => onCoordChange('world')}
+              className={state.coordSystem === 'world' ? 'btn-contained' : 'btn-outlined'}
+              style={{ fontSize: 10, padding: '3px 8px' }}
+              title="Weltkoordinaten"
+            >Welt</button>
+            <button
+              onClick={() => onCoordChange('cplane')}
+              className={state.coordSystem === 'cplane' ? 'btn-contained' : 'btn-outlined'}
+              style={{ fontSize: 10, padding: '3px 8px' }}
+              title="Aktive Konstruktionsebene"
+            >CPlane</button>
+          </div>
+        </div>
+
+        {!hasSelection ? (
+          <div style={{
+            padding: '32px 16px', textAlign: 'center',
+            color: 'var(--text-muted)', fontSize: 11,
+            border: '1px dashed var(--border)',
+            borderRadius: 'var(--r-lg)',
+            background: 'var(--bg-section)',
+          }}>
+            <Icon name="aspect_ratio" size={32} style={{ color: 'var(--text-muted)', opacity: 0.5 }} />
+            <div style={{ marginTop: 8 }}>Keine Selektion.</div>
+            <div style={{ marginTop: 4, fontSize: 10 }}>
+              In Rhino ein oder mehrere Objekte auswaehlen.
+            </div>
+          </div>
+        ) : (
+          <>
+            {/* Referenzpunkt — kompakte einzeilige Card */}
+            <div style={{
+              display: 'flex', alignItems: 'center', gap: 8,
+              padding: '6px 8px', marginBottom: 6,
+              background: 'var(--bg-section)',
+              border: '1px solid var(--border)',
+              borderRadius: 'var(--r-lg)',
+            }}>
+              <span style={{ fontSize: 10, fontWeight: 600, color: 'var(--text-muted)',
+                             letterSpacing: '0.06em', textTransform: 'uppercase' }}>
+                Ref
+              </span>
+              <RefPointGrid ref={ref} onChange={onRefChange} />
+              <RefZSelector z={ref.z} onChange={(z) => onRefChange({ ...ref, z })} />
+            </div>
+
+            {/* Position + Abmessungen nebeneinander */}
+            <div style={{ display: 'flex', gap: 6, marginBottom: 6 }}>
+              <div style={{
+                flex: 1, display: 'flex', flexDirection: 'column', gap: 4,
+                padding: '6px 8px',
+                background: 'var(--bg-section)',
+                border: '1px solid var(--border)',
+                borderRadius: 'var(--r-lg)',
+                minWidth: 0,
+              }}>
+                <div style={{ fontSize: 10, fontWeight: 600, color: 'var(--text-muted)',
+                              letterSpacing: '0.06em', textTransform: 'uppercase',
+                              display: 'flex', justifyContent: 'space-between' }}>
+                  <span>Position</span>
+                  <span style={{ fontWeight: 400, textTransform: 'none',
+                                 fontFamily: 'DM Mono, monospace', fontSize: 9 }}>
+                    {state.planeName}
+                  </span>
+                </div>
+                <Field label="X"><NumInput value={pos.x} onCommit={(v) => setDimPosition('x', v)} /></Field>
+                <Field label="Y"><NumInput value={pos.y} onCommit={(v) => setDimPosition('y', v)} /></Field>
+                <Field label="Z"><NumInput value={pos.z} onCommit={(v) => setDimPosition('z', v)} /></Field>
+              </div>
+              <div style={{
+                flex: 1, display: 'flex', flexDirection: 'column', gap: 4,
+                padding: '6px 8px',
+                background: 'var(--bg-section)',
+                border: '1px solid var(--border)',
+                borderRadius: 'var(--r-lg)',
+                minWidth: 0,
+              }}>
+                <div style={{ fontSize: 10, fontWeight: 600, color: 'var(--text-muted)',
+                              letterSpacing: '0.06em', textTransform: 'uppercase' }}>
+                  BBox
+                </div>
+                <Field label="B"><NumInput value={dims?.width}  onCommit={(v) => setDimDimension('width',  v)} /></Field>
+                <Field label="T"><NumInput value={dims?.depth}  onCommit={(v) => setDimDimension('depth',  v)} /></Field>
+                <Field label="H"><NumInput value={dims?.height} onCommit={(v) => setDimDimension('height', v)} /></Field>
+              </div>
+            </div>
+
+            {/* Shape-spezifisch */}
+            {shape && (
+              <div style={{
+                display: 'flex', flexDirection: 'column', gap: 4,
+                padding: '6px 8px', marginBottom: 6,
+                background: 'var(--bg-section)',
+                border: '1px solid var(--accent)',
+                borderRadius: 'var(--r-lg)',
+              }}>
+                <div style={{ fontSize: 10, fontWeight: 600, color: 'var(--accent)',
+                              letterSpacing: '0.06em', textTransform: 'uppercase' }}>
+                  {shape.type === 'circle' && 'Kreis'}
+                  {shape.type === 'rectangle' && 'Rechteck'}
+                  {shape.type === 'line' && 'Linie'}
+                </div>
+                {shape.type === 'circle' && (
+                  <Field label="R"><NumInput value={shape.radius} onCommit={(v) => setCircleRadius(v)} /></Field>
+                )}
+                {shape.type === 'rectangle' && (
+                  <div style={{ display: 'flex', gap: 6 }}>
+                    <Field label="W" style={{ flex: 1 }}>
+                      <NumInput value={shape.width}
+                                onCommit={(v) => setRectangleDims(v, shape.height)} />
+                    </Field>
+                    <Field label="H" style={{ flex: 1 }}>
+                      <NumInput value={shape.height}
+                                onCommit={(v) => setRectangleDims(shape.width, v)} />
+                    </Field>
+                  </div>
+                )}
+                {shape.type === 'line' && (
+                  <div style={{ display: 'flex', gap: 6 }}>
+                    <Field label="L" style={{ flex: 1 }}>
+                      <NumInput value={shape.length} onCommit={(v) => setLineLength(v)} />
+                    </Field>
+                    <Field label="α" style={{ flex: 1 }}>
+                      <NumInput value={shape.angle} onCommit={() => {}} disabled suffix="°" />
+                    </Field>
+                  </div>
+                )}
+              </div>
+            )}
+
+            {/* Rotation — kompakt einzeilig */}
+            <div style={{
+              display: 'flex', alignItems: 'center', gap: 6,
+              padding: '6px 8px', marginBottom: 6,
+              background: 'var(--bg-section)',
+              border: '1px solid var(--border)',
+              borderRadius: 'var(--r-lg)',
+            }}>
+              <span style={{ fontSize: 10, fontWeight: 600, color: 'var(--text-muted)',
+                             letterSpacing: '0.06em', textTransform: 'uppercase' }}>
+                Drehen
+              </span>
+              <div style={{ flex: 1 }}>
+                <NumInput value={rotationDelta} onCommit={setRotationDelta} suffix="°" />
+              </div>
+              <button
+                className="btn-outlined"
+                onClick={() => { if (rotationDelta) setDimRotationZ(rotationDelta) }}
+                disabled={!rotationDelta}
+                title="Selektion um Z-Achse der aktiven Plane drehen"
+                style={{ padding: '3px 8px', fontSize: 11 }}
+              >
+                <Icon name="rotate_right" size={13} />
+              </button>
+              {[-90, -45, 45, 90].map(a => (
+                <button
+                  key={a}
+                  className="btn-outlined"
+                  onClick={() => setDimRotationZ(a)}
+                  style={{ padding: '3px 5px', fontSize: 9, minWidth: 28 }}
+                  title={`${a}°`}
+                >
+                  {a > 0 ? '+' : ''}{a}°
+                </button>
+              ))}
+            </div>
+          </>
+        )}
+      </div>
+    </div>
+  )
+}
diff --git a/src/ElementeApp.jsx b/src/ElementeApp.jsx
new file mode 100644
index 0000000..7197176
--- /dev/null
+++ b/src/ElementeApp.jsx
@@ -0,0 +1,1391 @@
+import { useEffect, useRef, useState } from 'react'
+import Icon from './components/Icon'
+import {
+  onMessage, notifyReady,
+  listElemente, createWall, createDecke, createDach,
+  createFenster, createTuer, createTreppe,
+  updateElement, deleteElement, regenerateAllElements,
+} from './lib/rhinoBridge'
+
+const labelXs = {
+  fontSize: 10, fontWeight: 600, color: 'var(--text-muted)',
+  letterSpacing: '0.06em', textTransform: 'uppercase',
+}
+
+function fmtNum(v) {
+  if (v == null || v === '') return ''
+  const n = Number(v)
+  if (Number.isNaN(n)) return String(v)
+  return Number(n.toFixed(4)).toString()
+}
+
+function ReferenzSelector({ value, onChange }) {
+  const opts = [
+    { code: 'left',  label: 'Links',  hint: 'Achse auf linker Aussenseite' },
+    { code: 'mid',   label: 'Mittig', hint: 'Achse zentriert (Standard)' },
+    { code: 'right', label: 'Rechts', hint: 'Achse auf rechter Aussenseite' },
+  ]
+  return (
+    <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+      {opts.map(o => (
+        <button
+          key={o.code}
+          onClick={() => onChange(o.code)}
+          className={value === o.code ? 'btn-contained' : 'btn-outlined'}
+          style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}
+          title={o.hint}
+        >
+          {o.label}
+        </button>
+      ))}
+    </div>
+  )
+}
+
+// Pill-Button — kompakt, Icon + Label horizontal, abgerundet
+function PillButton({ icon, label, hint, onClick, onContextMenu, disabled,
+                      hasMenu, badge }) {
+  return (
+    <button
+      onClick={onClick}
+      onContextMenu={onContextMenu}
+      disabled={disabled}
+      title={hint}
+      style={{
+        display: 'flex', alignItems: 'center', gap: 6,
+        padding: '5px 10px 5px 8px',
+        background: 'var(--bg-input)',
+        border: '1px solid var(--border-light)',
+        borderRadius: 999,
+        cursor: disabled ? 'not-allowed' : 'pointer',
+        opacity: disabled ? 0.4 : 1,
+        transition: 'background 0.1s, border-color 0.1s',
+        fontSize: 11, fontWeight: 500,
+        color: 'var(--text-primary)',
+        whiteSpace: 'nowrap',
+        position: 'relative',
+      }}
+      onMouseEnter={(e) => { if (!disabled) {
+        e.currentTarget.style.background = 'var(--bg-item-hover)'
+        e.currentTarget.style.borderColor = 'var(--accent)'
+      }}}
+      onMouseLeave={(e) => {
+        e.currentTarget.style.background = 'var(--bg-input)'
+        e.currentTarget.style.borderColor = 'var(--border-light)'
+      }}
+    >
+      <Icon name={icon} size={14} style={{ color: 'var(--accent)' }} />
+      <span>{label}</span>
+      {hasMenu && (
+        <Icon name="expand_more" size={12}
+              style={{ color: 'var(--text-muted)', marginLeft: -2 }} />
+      )}
+      {badge && (
+        <span style={{
+          fontSize: 9, padding: '1px 5px', borderRadius: 8,
+          background: 'var(--bg-section)', color: 'var(--text-muted)',
+          marginLeft: 2,
+        }}>{badge}</span>
+      )}
+    </button>
+  )
+}
+
+// Vertikale Kategorie-Gruppe mit Label + Pills, die wrappen
+function PillGroup({ label, children }) {
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 5 }}>
+      <span style={{
+        fontSize: 9, color: 'var(--text-muted)',
+        letterSpacing: '0.08em', textTransform: 'uppercase',
+        fontWeight: 600,
+      }}>
+        {label}
+      </span>
+      <div style={{ display: 'flex', flexWrap: 'wrap', gap: 5 }}>
+        {children}
+      </div>
+    </div>
+  )
+}
+
+// Popup-Menue (relativ positioniert) fuer Untertypen wie Treppen-Art
+function PopupMenu({ items, onClose }) {
+  useEffect(() => {
+    const onDocClick = () => onClose()
+    document.addEventListener('click', onDocClick)
+    return () => document.removeEventListener('click', onDocClick)
+  }, [onClose])
+  return (
+    <div style={{
+      position: 'absolute',
+      top: '100%', left: 0,
+      marginTop: 4,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--border)',
+      borderRadius: 6,
+      boxShadow: '0 4px 12px rgba(0,0,0,0.3)',
+      padding: 4,
+      zIndex: 100,
+      minWidth: 140,
+    }}>
+      {items.map((it, i) => (
+        <button key={i}
+          onClick={(e) => { e.stopPropagation(); it.onClick(); onClose() }}
+          disabled={it.disabled}
+          title={it.hint || ''}
+          style={{
+            display: 'flex', alignItems: 'center', gap: 6,
+            width: '100%', padding: '6px 8px',
+            background: 'transparent',
+            border: 'none', borderRadius: 4,
+            cursor: it.disabled ? 'not-allowed' : 'pointer',
+            opacity: it.disabled ? 0.4 : 1,
+            color: 'var(--text-primary)',
+            fontSize: 11, textAlign: 'left',
+          }}
+          onMouseEnter={(e) => { if (!it.disabled) {
+            e.currentTarget.style.background = 'var(--bg-item-hover)'
+          }}}
+          onMouseLeave={(e) => {
+            e.currentTarget.style.background = 'transparent'
+          }}>
+          {it.icon && <Icon name={it.icon} size={12}
+                            style={{ color: 'var(--accent)' }} />}
+          <span style={{ flex: 1 }}>{it.label}</span>
+          {it.badge && (
+            <span style={{ fontSize: 9, color: 'var(--text-muted)' }}>{it.badge}</span>
+          )}
+        </button>
+      ))}
+    </div>
+  )
+}
+
+const KIND_META = {
+  wand:    { icon: 'view_week',   label: 'Wand',    color: '#a8b8c8' },
+  decke:   { icon: 'layers',      label: 'Decke',   color: '#b8a890' },
+  dach:    { icon: 'roofing',     label: 'Dach',    color: '#c89878' },
+  fenster: { icon: 'window',      label: 'Fenster', color: '#90b8d0' },
+  tuer:    { icon: 'sensor_door', label: 'Tuer',    color: '#c8a878' },
+  treppe:  { icon: 'stairs',      label: 'Treppe',  color: '#a0c0a0' },
+}
+
+function ElementList({ elements }) {
+  // Gruppiert nach kind, dann nach geschoss-Reihenfolge wie sie reinkommen
+  const grouped = {}
+  for (const el of elements) {
+    const k = el.kind || 'unknown'
+    if (!grouped[k]) grouped[k] = []
+    grouped[k].push(el)
+  }
+  const kindOrder = ['wand', 'decke', 'dach', 'fenster', 'tuer', 'treppe']
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 8,
+      padding: 10,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--border)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center' }}>
+        <span style={{ ...labelXs, flex: 1 }}>Alle Elemente</span>
+        <span style={{ fontSize: 9, color: 'var(--text-muted)' }}>{elements.length}</span>
+      </div>
+      {kindOrder.map(k => {
+        const arr = grouped[k]
+        if (!arr || arr.length === 0) return null
+        const meta = KIND_META[k] || { icon: 'help', label: k, color: '#888' }
+        return (
+          <div key={k} style={{ display: 'flex', flexDirection: 'column', gap: 3 }}>
+            <div style={{
+              display: 'flex', alignItems: 'center', gap: 5,
+              fontSize: 9, color: 'var(--text-muted)',
+              letterSpacing: '0.06em', textTransform: 'uppercase',
+              fontWeight: 600,
+              paddingLeft: 2,
+            }}>
+              <Icon name={meta.icon} size={10}
+                    style={{ color: meta.color }} />
+              <span>{meta.label}</span>
+              <span style={{ color: 'var(--text-muted)', opacity: 0.6 }}>·</span>
+              <span style={{ opacity: 0.8 }}>{arr.length}</span>
+            </div>
+            {arr.map(el => (
+              <ElementListRow key={el.id} el={el} meta={meta} />
+            ))}
+          </div>
+        )
+      })}
+    </div>
+  )
+}
+
+function ElementListRow({ el, meta }) {
+  const secondary = (() => {
+    if (el.kind === 'fenster' || el.kind === 'tuer')
+      return `${fmtNum(el.breite)}×${fmtNum(el.hoehe)} m`
+    if (el.kind === 'treppe')
+      return `${el.nStufen} St · H ${fmtNum(el.ok - el.uk)} m`
+    if (el.kind === 'dach' && el.neigung != null)
+      return `d ${fmtNum(el.dicke)} · ${fmtNum(el.neigung)}°`
+    return `d ${fmtNum(el.dicke)} m`
+  })()
+  const tertiary = (() => {
+    if (el.kind === 'fenster')
+      return `Br ${fmtNum(el.brueest)}`
+    if (el.kind === 'tuer' || el.kind === 'treppe')
+      return ''
+    return `UK ${fmtNum(el.uk)} · OK ${fmtNum(el.ok)}`
+  })()
+  return (
+    <div style={{
+      display: 'flex', alignItems: 'center', gap: 8,
+      padding: '5px 8px',
+      background: el.selected ? 'var(--bg-item-active)' : 'transparent',
+      border: '1px solid ' + (el.selected ? 'var(--accent)' : 'transparent'),
+      borderLeft: '3px solid ' + (el.selected ? 'var(--accent)' : meta.color),
+      borderRadius: 'var(--r)',
+      fontSize: 10,
+    }}>
+      <span style={{
+        fontFamily: 'DM Mono, monospace', fontWeight: 500,
+        color: 'var(--text-primary)',
+        minWidth: 40,
+      }}>
+        {el.geschossName || '—'}
+      </span>
+      <span style={{
+        flex: 1, fontFamily: 'DM Mono, monospace',
+        color: 'var(--text-primary)',
+      }}>
+        {secondary}
+      </span>
+      {tertiary && (
+        <span style={{
+          color: 'var(--text-muted)', fontFamily: 'DM Mono, monospace',
+          fontSize: 9,
+        }}>
+          {tertiary}
+        </span>
+      )}
+    </div>
+  )
+}
+
+
+function NeuesElementSection({ noGeschoss, activeName }) {
+  const [treppeMenuOpen, setTreppeMenuOpen] = useState(false)
+  const treppeWrapperRef = useRef(null)
+  const dis = noGeschoss
+  const baseHint = (label) =>
+    noGeschoss ? 'Erst im Ebenen-Manager ein Geschoss aktivieren'
+               : `${label} auf ${activeName}`
+
+  const openTreppeMenu = (e) => {
+    e.preventDefault()
+    setTreppeMenuOpen(true)
+  }
+
+  const treppeItems = [
+    { icon: 'stairs', label: 'Gerade Treppe',
+      hint: 'Lauflinie mit 2 Punkten',
+      onClick: () => createTreppe({ treppeArt: 'gerade' }) },
+    { icon: 'turn_right', label: 'L-Treppe',
+      hint: '3 Punkte: Start, Podest-Ecke, Ende',
+      onClick: () => createTreppe({ treppeArt: 'l' }) },
+    { icon: 'rotate_right', label: 'Wendeltreppe',
+      hint: '3 Punkte: Mittelpunkt, Start-Lauflinie, End-Lauflinie',
+      onClick: () => createTreppe({ treppeArt: 'wendel' }) },
+  ]
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 10,
+      padding: 10, marginBottom: 8,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--border)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6, fontSize: 10 }}>
+        <span style={labelXs}>Neues Element</span>
+        <div style={{ flex: 1 }} />
+        <span style={{ color: noGeschoss ? 'var(--danger)' : 'var(--text-muted)' }}>
+          {noGeschoss ? 'Kein Geschoss aktiv' : 'auf'}
+        </span>
+        {!noGeschoss && (
+          <span className="chip chip-accent" style={{
+            fontSize: 10, fontFamily: 'DM Mono, monospace', fontWeight: 600,
+          }}>
+            {activeName}
+          </span>
+        )}
+      </div>
+
+      <PillGroup label="Konstruktion">
+        <PillButton icon="view_week" label="Wand"
+          hint={baseHint('Wand zeichnen')} disabled={dis}
+          onClick={() => createWall({ geschoss: '' })} />
+        <PillButton icon="layers" label="Decke"
+          hint={baseHint('Decke zeichnen')} disabled={dis}
+          onClick={() => createDecke({ geschoss: '' })} />
+        <PillButton icon="roofing" label="Dach"
+          hint={baseHint('Pultdach zeichnen — Traufe = 1. Kante')} disabled={dis}
+          onClick={() => createDach({ geschoss: '' })} />
+      </PillGroup>
+
+      <PillGroup label="Oeffnungen">
+        <PillButton icon="window" label="Fenster"
+          hint={dis ? baseHint('Fenster') :
+            'Erst Wand-Achse waehlen, dann Punkt darauf'} disabled={dis}
+          onClick={() => createFenster({})} />
+        <PillButton icon="sensor_door" label="Tuer"
+          hint={dis ? baseHint('Tuer') :
+            'Erst Wand-Achse waehlen, dann Punkt darauf'} disabled={dis}
+          onClick={() => createTuer({})} />
+      </PillGroup>
+
+      <PillGroup label="Erschliessung">
+        <div ref={treppeWrapperRef} style={{ position: 'relative' }}>
+          <PillButton icon="stairs" label="Treppe" hasMenu
+            hint={dis ? baseHint('Treppe') :
+              'Klick: gerade Treppe · Rechtsklick: Typ waehlen'}
+            disabled={dis}
+            onClick={() => createTreppe({ treppeArt: 'gerade' })}
+            onContextMenu={openTreppeMenu} />
+          {treppeMenuOpen && (
+            <PopupMenu items={treppeItems}
+                       onClose={() => setTreppeMenuOpen(false)} />
+          )}
+        </div>
+      </PillGroup>
+    </div>
+  )
+}
+
+
+export default function ElementeApp() {
+  const [state, setState] = useState({
+    elements: [], geschosse: [], selection: null,
+    activeGeschoss: '', activeGeschossName: '',
+  })
+  // Defaults werden vom Backend (sticky) verwaltet — letzte Werte aus
+  // dem Rhino-Prompt bleiben fuer den naechsten Klick erhalten.
+
+  useEffect(() => {
+    onMessage('STATE', (s) => setState(prev => ({ ...prev, ...s })))
+    notifyReady()
+  }, [])
+
+  const elements = state.elements || []
+  const geschosse = state.geschosse || []
+  const selected = elements.find(el => el.id === state.selection)
+  const activeName = state.activeGeschossName || ''
+  const noGeschoss = !state.activeGeschoss
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column',
+      height: '100vh', overflow: 'hidden',
+      background: 'var(--bg-base)', color: 'var(--text-primary)',
+      fontFamily: 'var(--font)', fontSize: 11,
+    }}>
+      {/* Header */}
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 6,
+        padding: '8px 10px', borderBottom: '1px solid var(--border)',
+        flexShrink: 0,
+      }}>
+        <span style={{ flex: 1, fontWeight: 600, letterSpacing: '0.08em' }}>ELEMENTE</span>
+        <span className="chip" style={{ fontSize: 8 }}>{elements.length}</span>
+        <button
+          onClick={() => regenerateAllElements()}
+          className="btn-icon-tonal"
+          disabled={elements.length === 0}
+          title="Alle Elemente neu generieren (z.B. nach Geschoss-Aenderung)"
+        >
+          <Icon name="sync" size={14} />
+        </button>
+        <button
+          onClick={() => listElemente()}
+          className="btn-icon-tonal"
+          title="Aktualisieren"
+        >
+          <Icon name="refresh" size={14} />
+        </button>
+      </div>
+
+      <div style={{ flex: 1, overflowY: 'auto', overflowX: 'hidden', padding: 8 }}>
+        {/* Element-Toolbar: kategorisierte Pills */}
+        <NeuesElementSection
+          noGeschoss={noGeschoss}
+          activeName={activeName}
+        />
+
+
+        {/* Properties */}
+        {selected ? (
+          selected.kind === 'wand' ? (
+            <WallProperties wall={selected} geschosse={geschosse}
+              onUpdate={(p) => updateElement(selected.id, p)}
+              onDelete={() => { if (window.confirm('Wand loeschen?')) deleteElement(selected.id) }} />
+          ) : selected.kind === 'decke' ? (
+            <DeckenProperties decke={selected} geschosse={geschosse}
+              onUpdate={(p) => updateElement(selected.id, p)}
+              onDelete={() => { if (window.confirm('Decke loeschen?')) deleteElement(selected.id) }} />
+          ) : selected.kind === 'dach' ? (
+            <DachProperties dach={selected} geschosse={geschosse}
+              onUpdate={(p) => updateElement(selected.id, p)}
+              onDelete={() => { if (window.confirm('Dach loeschen?')) deleteElement(selected.id) }} />
+          ) : selected.kind === 'treppe' ? (
+            <TreppeProperties treppe={selected} geschosse={geschosse}
+              onUpdate={(p) => updateElement(selected.id, p)}
+              onDelete={() => { if (window.confirm('Treppe loeschen?')) deleteElement(selected.id) }} />
+          ) : (
+            <OeffnungProperties oeff={selected}
+              onUpdate={(p) => updateElement(selected.id, p)}
+              onDelete={() => {
+                const label = selected.kind === 'fenster' ? 'Fenster' : 'Tuer'
+                if (window.confirm(`${label} loeschen?`)) deleteElement(selected.id)
+              }} />
+          )
+        ) : (
+          <div style={{
+            padding: '20px 16px', textAlign: 'center',
+            color: 'var(--text-muted)', fontSize: 11,
+            border: '1px dashed var(--border)',
+            borderRadius: 'var(--r-lg)',
+            background: 'var(--bg-section)',
+            marginBottom: 8,
+          }}>
+            <Icon name="touch_app" size={24} style={{ color: 'var(--text-muted)', opacity: 0.5 }} />
+            <div style={{ marginTop: 6 }}>Kein Element selektiert.</div>
+            <div style={{ marginTop: 4, fontSize: 10 }}>
+              Eine Wand-Achse oder Decken-Outline in Rhino auswaehlen.
+            </div>
+          </div>
+        )}
+
+        {/* Liste aller Elemente */}
+        {elements.length > 0 && (
+          <ElementList elements={elements} />
+        )}
+      </div>
+    </div>
+  )
+}
+
+function WallProperties({ wall, geschosse, onUpdate, onDelete }) {
+  const [dicke, setDicke] = useState(String(wall.dicke))
+  const [ukOver, setUkOver] = useState(wall.ukOverride)
+  const [okOver, setOkOver] = useState(wall.okOverride)
+  useEffect(() => {
+    setDicke(String(wall.dicke))
+    setUkOver(wall.ukOverride)
+    setOkOver(wall.okOverride)
+  }, [wall.id, wall.dicke, wall.ukOverride, wall.okOverride])
+
+  const ukAuto = ukOver === '' || ukOver == null
+  const okAuto = okOver === '' || okOver == null
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 8,
+      padding: 10, marginBottom: 8,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--accent)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center' }}>
+        <Icon name="view_week" size={13} style={{ color: 'var(--accent)', marginRight: 6 }} />
+        <span style={{ ...labelXs, flex: 1, color: 'var(--accent)' }}>
+          Wand · {wall.geschossName}
+        </span>
+        <button className="btn-icon-sm btn-icon-danger" onClick={onDelete} title="Loeschen">
+          <Icon name="delete" size={12} />
+        </button>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Geschoss</span>
+        <select value={wall.geschoss}
+                onChange={(e) => onUpdate({ geschoss: e.target.value })}
+                style={{ flex: 1, fontSize: 11 }}>
+          {geschosse.map(g => <option key={g.id} value={g.id}>{g.name}</option>)}
+        </select>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Dicke</span>
+        <input type="text" value={dicke}
+               onChange={(e) => setDicke(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(dicke)
+                 if (v > 0 && v !== wall.dicke) onUpdate({ dicke: v })
+                 else setDicke(String(wall.dicke))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Referenz</span>
+        <ReferenzSelector value={wall.referenz || 'mid'}
+                          onChange={(v) => onUpdate({ referenz: v })} />
+      </div>
+
+      <AutoOverrideField label="UK" auto={ukAuto} autoValue={wall.uk}
+        rawValue={ukOver} onChangeRaw={setUkOver}
+        onToggle={() => onUpdate({ ukOverride: ukAuto ? wall.uk : '' })}
+        onCommit={() => {
+          if (ukAuto) return
+          const v = parseFloat(ukOver)
+          if (!Number.isNaN(v)) onUpdate({ ukOverride: v })
+        }} />
+
+      <AutoOverrideField label="OK" auto={okAuto} autoValue={wall.ok}
+        rawValue={okOver} onChangeRaw={setOkOver}
+        onToggle={() => onUpdate({ okOverride: okAuto ? wall.ok : '' })}
+        onCommit={() => {
+          if (okAuto) return
+          const v = parseFloat(okOver)
+          if (!Number.isNaN(v)) onUpdate({ okOverride: v })
+        }} />
+    </div>
+  )
+}
+
+function DeckenProperties({ decke, geschosse, onUpdate, onDelete }) {
+  const [dicke, setDicke] = useState(String(decke.dicke))
+  const [ukOver, setUkOver] = useState(decke.ukOverride)
+  const [okOver, setOkOver] = useState(decke.okOverride)
+  useEffect(() => {
+    setDicke(String(decke.dicke))
+    setUkOver(decke.ukOverride)
+    setOkOver(decke.okOverride)
+  }, [decke.id, decke.dicke, decke.ukOverride, decke.okOverride])
+
+  const ukAuto = ukOver === '' || ukOver == null
+  const okAuto = okOver === '' || okOver == null
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 8,
+      padding: 10, marginBottom: 8,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--accent)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center' }}>
+        <Icon name="layers" size={13} style={{ color: 'var(--accent)', marginRight: 6 }} />
+        <span style={{ ...labelXs, flex: 1, color: 'var(--accent)' }}>
+          Decke · {decke.geschossName}
+        </span>
+        <button className="btn-icon-sm btn-icon-danger" onClick={onDelete} title="Loeschen">
+          <Icon name="delete" size={12} />
+        </button>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Geschoss</span>
+        <select value={decke.geschoss}
+                onChange={(e) => onUpdate({ geschoss: e.target.value })}
+                style={{ flex: 1, fontSize: 11 }}>
+          {geschosse.map(g => <option key={g.id} value={g.id}>{g.name}</option>)}
+        </select>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Dicke</span>
+        <input type="text" value={dicke}
+               onChange={(e) => setDicke(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(dicke)
+                 if (v > 0 && v !== decke.dicke) onUpdate({ dicke: v })
+                 else setDicke(String(decke.dicke))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+      </div>
+
+      <AutoOverrideField label="UK" auto={ukAuto} autoValue={decke.uk}
+        rawValue={ukOver} onChangeRaw={setUkOver}
+        onToggle={() => onUpdate({ ukOverride: ukAuto ? decke.uk : '' })}
+        onCommit={() => {
+          if (ukAuto) return
+          const v = parseFloat(ukOver)
+          if (!Number.isNaN(v)) onUpdate({ ukOverride: v })
+        }} />
+
+      <AutoOverrideField label="OK" auto={okAuto} autoValue={decke.ok}
+        rawValue={okOver} onChangeRaw={setOkOver}
+        onToggle={() => onUpdate({ okOverride: okAuto ? decke.ok : '' })}
+        onCommit={() => {
+          if (okAuto) return
+          const v = parseFloat(okOver)
+          if (!Number.isNaN(v)) onUpdate({ okOverride: v })
+        }} />
+    </div>
+  )
+}
+
+function DachProperties({ dach, geschosse, onUpdate, onDelete }) {
+  const [dicke,   setDicke]   = useState(String(dach.dicke))
+  const [neigung, setNeigung] = useState(String(dach.neigung ?? 30))
+  const [eaveIdx, setEaveIdx] = useState(String(dach.eaveIdx ?? 0))
+  const [ukOver,  setUkOver]  = useState(dach.ukOverride)
+  useEffect(() => {
+    setDicke(String(dach.dicke))
+    setNeigung(String(dach.neigung ?? 30))
+    setEaveIdx(String(dach.eaveIdx ?? 0))
+    setUkOver(dach.ukOverride)
+  }, [dach.id, dach.dicke, dach.neigung, dach.eaveIdx, dach.ukOverride])
+  const dachTyp = dach.dachTyp || 'pult'
+
+  const ukAuto = ukOver === '' || ukOver == null
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 8,
+      padding: 10, marginBottom: 8,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--accent)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center' }}>
+        <Icon name="roofing" size={13} style={{ color: 'var(--accent)', marginRight: 6 }} />
+        <span style={{ ...labelXs, flex: 1, color: 'var(--accent)' }}>
+          {dachTyp === 'sattel' ? 'Satteldach' : dachTyp === 'walm' ? 'Walmdach' : 'Pultdach'} · {dach.geschossName}
+        </span>
+        <button className="btn-icon-sm btn-icon-danger" onClick={onDelete} title="Loeschen">
+          <Icon name="delete" size={12} />
+        </button>
+      </div>
+
+      {/* Dach-Typ */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Typ</span>
+        <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+          {[
+            { code: 'pult',     label: 'Pult' },
+            { code: 'sattel',   label: 'Sattel' },
+            { code: 'walm',     label: 'Walm' },
+            { code: 'mansarde', label: 'Mansarde' },
+          ].map(o => (
+            <button key={o.code}
+              onClick={() => onUpdate({ dachTyp: o.code })}
+              className={dachTyp === o.code ? 'btn-contained' : 'btn-outlined'}
+              style={{ flex: 1, padding: '3px 4px', fontSize: 9 }}
+              title={o.code === 'pult'
+                     ? 'Geneigte Flaeche, Traufe = 1. Kante'
+                     : 'Erfordert Rechteck-Outline (4 Ecken)'}>
+              {o.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Geschoss</span>
+        <select value={dach.geschoss}
+                onChange={(e) => onUpdate({ geschoss: e.target.value })}
+                style={{ flex: 1, fontSize: 11 }}>
+          {geschosse.map(g => <option key={g.id} value={g.id}>{g.name}</option>)}
+        </select>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Dicke</span>
+        <input type="text" value={dicke}
+               onChange={(e) => setDicke(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(dicke)
+                 if (v > 0 && v !== dach.dicke) onUpdate({ dicke: v })
+                 else setDicke(String(dach.dicke))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Neigung</span>
+        <input type="text" value={neigung}
+               onChange={(e) => setNeigung(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(neigung)
+                 if (!Number.isNaN(v) && v >= 0 && v < 90) onUpdate({ neigung: v })
+                 else setNeigung(String(dach.neigung ?? 30))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>°</span>
+      </div>
+
+      {dachTyp === 'pult' && (
+        <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+          <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+                title="Index der Traufkante (0 = Kante zwischen 1. und 2. Punkt)">
+            Traufe
+          </span>
+          <input type="text" value={eaveIdx}
+                 onChange={(e) => setEaveIdx(e.target.value)}
+                 onBlur={() => {
+                   const v = parseInt(eaveIdx, 10)
+                   if (!Number.isNaN(v) && v >= 0) onUpdate({ eaveIdx: v })
+                   else setEaveIdx(String(dach.eaveIdx ?? 0))
+                 }}
+                 onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+                 style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+          <span style={{ fontSize: 9, color: 'var(--text-muted)' }}>Kante</span>
+        </div>
+      )}
+
+      {/* Mansarde-spezifisch: Variante + untere Neigung + Knick-Hoehe */}
+      {dachTyp === 'mansarde' && (
+        <>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+            <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Variante</span>
+            <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+              {[
+                { code: 'walm',        label: 'Walm',   hint: 'Knick auf allen 4 Seiten (Pariser Stil)' },
+                { code: 'giebel',      label: 'Giebel', hint: 'Knick nur an langen Seiten, Schmalseiten als Giebelwand (DACH-Standard)' },
+                { code: 'walm_giebel', label: 'W-G',    hint: 'Unten Walm (Knick rundum), oben Giebel mit First ueber voller Laenge' },
+              ].map(o => (
+                <button key={o.code}
+                  onClick={() => onUpdate({ dachVariante: o.code })}
+                  className={(dach.dachVariante || 'walm') === o.code ? 'btn-contained' : 'btn-outlined'}
+                  style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}
+                  title={o.hint}>
+                  {o.label}
+                </button>
+              ))}
+            </div>
+          </div>
+          <MansardeFields dach={dach} onUpdate={onUpdate} />
+        </>
+      )}
+
+      <AutoOverrideField label="Basis" auto={ukAuto} autoValue={dach.uk}
+        rawValue={ukOver} onChangeRaw={setUkOver}
+        onToggle={() => onUpdate({ ukOverride: ukAuto ? dach.uk : '' })}
+        onCommit={() => {
+          if (ukAuto) return
+          const v = parseFloat(ukOver)
+          if (!Number.isNaN(v)) onUpdate({ ukOverride: v })
+        }} />
+    </div>
+  )
+}
+
+function MansardeFields({ dach, onUpdate }) {
+  const [nu, setNu] = useState(String(dach.neigungUnten ?? 60))
+  const [kh, setKh] = useState(String(dach.knickH ?? 2.0))
+  useEffect(() => {
+    setNu(String(dach.neigungUnten ?? 60))
+    setKh(String(dach.knickH ?? 2.0))
+  }, [dach.id, dach.neigungUnten, dach.knickH])
+  return (
+    <>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Untere (steile) Neigung — bis zum Knick">
+          Steil
+        </span>
+        <input type="text" value={nu}
+               onChange={(e) => setNu(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(nu)
+                 if (!Number.isNaN(v) && v > 0 && v < 90) onUpdate({ neigungUnten: v })
+                 else setNu(String(dach.neigungUnten ?? 60))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>°</span>
+      </div>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Hoehe ueber Traufe wo der Knick sitzt">
+          Knick H
+        </span>
+        <input type="text" value={kh}
+               onChange={(e) => setKh(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(kh)
+                 if (!Number.isNaN(v) && v > 0) onUpdate({ knickH: v })
+                 else setKh(String(dach.knickH ?? 2.0))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+      </div>
+    </>
+  )
+}
+
+const SIMS_OPTIONS = [
+  { code: 'ohne',     label: 'ohne' },
+  { code: 'schmal',   label: 'schmal' },
+  { code: 'standard', label: 'standard' },
+  { code: 'breit',    label: 'breit' },
+]
+
+const RAHMEN_POS_OPTIONS = [
+  { code: 'aussen', label: 'aussen', hint: 'Rahmen buendig mit Aussenflaeche' },
+  { code: 'mid',    label: 'mittig', hint: 'Rahmen mittig im Wandquerschnitt' },
+  { code: 'innen',  label: 'innen',  hint: 'Rahmen buendig mit Innenflaeche' },
+]
+
+const OEFF_REFERENZ_OPTIONS = [
+  { code: 'links',  label: 'Links',  hint: 'Klick-Punkt am linken Rand — Oeffnung extendiert nach rechts (+tan der Wand-Achse)' },
+  { code: 'mid',    label: 'Mittig', hint: 'Klick-Punkt mittig in der Oeffnung (Standard)' },
+  { code: 'rechts', label: 'Rechts', hint: 'Klick-Punkt am rechten Rand — Oeffnung extendiert nach links (-tan)' },
+]
+
+function SollRow({ label, value, unit, soll, sollKey, onUpdateSoll, readOnly }) {
+  // soll[sollKey] = [lo, hi, on]
+  const lo = soll?.[sollKey]?.[0] ?? 0
+  const hi = soll?.[sollKey]?.[1] ?? 0
+  const on = soll?.[sollKey]?.[2] ?? true
+  const inRange = value >= lo && value <= hi
+  const valueColor = !on ? 'var(--text-muted)'
+                    : inRange ? 'var(--accent)'
+                    : '#c87050'
+  const [loStr, setLoStr] = useState(String(lo))
+  const [hiStr, setHiStr] = useState(String(hi))
+  useEffect(() => {
+    setLoStr(String(lo))
+    setHiStr(String(hi))
+  }, [lo, hi])
+
+  const commit = (k, val, setBack, def) => {
+    const v = parseFloat(val)
+    if (!Number.isNaN(v) && v > 0) {
+      const next = [...soll[sollKey]]
+      next[k] = v
+      onUpdateSoll({ ...soll, [sollKey]: next })
+    } else setBack(String(def))
+  }
+
+  const toggle = () => {
+    const next = [...soll[sollKey]]
+    next[2] = !next[2]
+    onUpdateSoll({ ...soll, [sollKey]: next })
+  }
+
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 4, fontSize: 10,
+                  fontFamily: 'DM Mono, monospace' }}>
+      <input type="checkbox" checked={on} onChange={toggle}
+             title="Validierung ein/aus"
+             style={{ margin: 0, cursor: 'pointer' }} />
+      <span style={{ color: 'var(--text-muted)', width: 30 }}>{label}</span>
+      <span style={{ color: valueColor, width: 56 }}>
+        {fmtNum(value)} {unit}
+      </span>
+      {readOnly ? (
+        <span style={{ color: 'var(--text-muted)', marginLeft: 'auto', fontSize: 9 }}>
+          {fmtNum(lo)}–{fmtNum(hi)}
+        </span>
+      ) : (
+        <>
+          <span style={{ color: 'var(--text-muted)', marginLeft: 'auto', fontSize: 9 }}>Soll</span>
+          <input type="text" value={loStr}
+                 onChange={(e) => setLoStr(e.target.value)}
+                 onBlur={() => commit(0, loStr, setLoStr, lo)}
+                 onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+                 disabled={!on}
+                 style={{
+                   width: 38, fontSize: 9, fontFamily: 'DM Mono, monospace',
+                   padding: '1px 3px', background: 'transparent',
+                   border: '1px solid var(--border-light)',
+                   color: on ? 'var(--text-primary)' : 'var(--text-muted)',
+                 }} />
+          <span style={{ color: 'var(--text-muted)', fontSize: 9 }}>–</span>
+          <input type="text" value={hiStr}
+                 onChange={(e) => setHiStr(e.target.value)}
+                 onBlur={() => commit(1, hiStr, setHiStr, hi)}
+                 onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+                 disabled={!on}
+                 style={{
+                   width: 38, fontSize: 9, fontFamily: 'DM Mono, monospace',
+                   padding: '1px 3px', background: 'transparent',
+                   border: '1px solid var(--border-light)',
+                   color: on ? 'var(--text-primary)' : 'var(--text-muted)',
+                 }} />
+        </>
+      )}
+    </div>
+  )
+}
+
+const DEFAULT_TREPPE_SOLL = {
+  s:  [0.15, 0.20, true],
+  a:  [0.21, 0.35, true],
+  sa: [0.60, 0.65, true],
+}
+
+function TreppeProperties({ treppe, geschosse, onUpdate, onDelete }) {
+  const [breite, setBreite] = useState(String(treppe.breite ?? 1.0))
+  const [nStufen, setNStufen] = useState(String(treppe.nStufen ?? 15))
+  const [laufD, setLaufD] = useState(String(treppe.laufD ?? 0.18))
+  const [hStr, setHStr] = useState('')
+  useEffect(() => {
+    setBreite(String(treppe.breite ?? 1.0))
+    setNStufen(String(treppe.nStufen ?? 15))
+    setLaufD(String(treppe.laufD ?? 0.18))
+  }, [treppe.id, treppe.breite, treppe.nStufen, treppe.laufD])
+
+  const H = (treppe.ok ?? 0) - (treppe.uk ?? 0)
+  const N = treppe.nStufen ?? 15
+  const L = treppe.laufLen ?? 0
+  const S = N > 0 ? H / N : 0
+  const A = N > 0 ? L / N : 0
+  const sa = 2 * S + A
+  const soll = treppe.soll || DEFAULT_TREPPE_SOLL
+  const hasHOver = treppe.hOver != null && treppe.hOver !== ''
+  useEffect(() => {
+    setHStr(hasHOver ? String(treppe.hOver) : fmtNum(H))
+  }, [treppe.id, treppe.hOver, H, hasHOver])
+
+  const allOK = (
+    (!soll.s[2]  || (S  >= soll.s[0]  && S  <= soll.s[1])) &&
+    (!soll.a[2]  || (A  >= soll.a[0]  && A  <= soll.a[1])) &&
+    (!soll.sa[2] || (sa >= soll.sa[0] && sa <= soll.sa[1]))
+  )
+
+  const onUpdateSoll = (newSoll) => {
+    onUpdate({ soll: newSoll })
+  }
+  const onCommitH = () => {
+    const v = parseFloat(hStr)
+    if (!Number.isNaN(v) && v > 0 && Math.abs(v - H) > 1e-5) {
+      // User hat H ueberschrieben → Ziel auf "eigene"
+      onUpdate({ hOver: v, geschossEnd: '' })
+    }
+  }
+  const onClearHOver = () => {
+    onUpdate({ hOver: '' })
+  }
+
+  const ref = treppe.treppeReferenz ?? 'mid'
+  const REF_OPTIONS = [
+    { code: 'links',  label: 'Links' },
+    { code: 'mid',    label: 'Mittig' },
+    { code: 'rechts', label: 'Rechts' },
+  ]
+  const modus = treppe.treppeModus ?? 'flach'
+  const MODUS_OPTIONS = [
+    { code: 'massiv',      label: 'massiv',      hint: 'Block bis zum Boden — wie eine Mauer unter der Treppe' },
+    { code: 'flach',       label: 'flach',       hint: 'Schraege Plattenunterseite parallel zum Treppenlauf (realistisch)' },
+    { code: 'plattenrand', label: 'gestuft',     hint: 'Plattenunterseite folgt den Stufen, vertikal versetzt' },
+  ]
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 8,
+      padding: 10, marginBottom: 8,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--accent)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center' }}>
+        <Icon name="stairs" size={13} style={{ color: 'var(--accent)', marginRight: 6 }} />
+        <span style={{ ...labelXs, flex: 1, color: 'var(--accent)' }}>
+          Treppe · {treppe.geschossName} → {treppe.geschossEndName || '(auto)'}
+        </span>
+        <button className="btn-icon-sm btn-icon-danger" onClick={onDelete} title="Loeschen">
+          <Icon name="delete" size={12} />
+        </button>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Start</span>
+        <select value={treppe.geschoss}
+                onChange={(e) => onUpdate({ geschoss: e.target.value })}
+                style={{ flex: 1, fontSize: 11 }}>
+          {geschosse.map(g => <option key={g.id} value={g.id}>{g.name}</option>)}
+        </select>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Ziel</span>
+        <select
+          value={hasHOver ? '__custom__' : (treppe.geschossEnd || '')}
+          onChange={(e) => {
+            const v = e.target.value
+            if (v === '__custom__') {
+              // Eigene Hoehe — falls noch nicht gesetzt, mit aktuellem H starten
+              onUpdate({ hOver: H, geschossEnd: '' })
+            } else {
+              onUpdate({ geschossEnd: v, hOver: '' })
+            }
+          }}
+          style={{ flex: 1, fontSize: 11 }}>
+          <option value="">(auto: Start + Hoehe)</option>
+          {geschosse.filter(g => g.id !== treppe.geschoss)
+            .map(g => <option key={g.id} value={g.id}>{g.name}</option>)}
+          <option value="__custom__">eigene Hoehe</option>
+        </select>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Breite</span>
+        <input type="text" value={breite}
+               onChange={(e) => setBreite(e.target.value)}
+               onBlur={() => {
+                 const v = parseFloat(breite)
+                 if (!Number.isNaN(v) && v >= 0.3) onUpdate({ breite: v })
+                 else setBreite(String(treppe.breite))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Stufen</span>
+        <input type="text" value={nStufen}
+               onChange={(e) => setNStufen(e.target.value)}
+               onBlur={() => {
+                 const v = parseInt(nStufen, 10)
+                 if (Number.isFinite(v) && v >= 2 && v <= 40) onUpdate({ nStufen: v })
+                 else setNStufen(String(treppe.nStufen))
+               }}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>×</span>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Lage</span>
+        <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+          {REF_OPTIONS.map(o => (
+            <button key={o.code}
+              onClick={() => onUpdate({ treppeReferenz: o.code })}
+              className={ref === o.code ? 'btn-contained' : 'btn-outlined'}
+              style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}>
+              {o.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div style={{ height: 1, background: 'var(--border-light)', margin: '2px 0' }} />
+
+      {/* Unterseite-Modus */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Form der Treppen-Unterseite">
+          Unten
+        </span>
+        <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+          {MODUS_OPTIONS.map(o => (
+            <button key={o.code}
+              onClick={() => onUpdate({ treppeModus: o.code })}
+              className={modus === o.code ? 'btn-contained' : 'btn-outlined'}
+              style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}
+              title={o.hint}>
+              {o.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      {/* Lauf-Plattendicke (nur fuer flach + plattenrand relevant) */}
+      {modus !== 'massiv' && (
+        <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+          <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+                title="Dicke der Lauf-Platte (Materialdicke unter den Stufen)">
+            Platte
+          </span>
+          <input type="text" value={laufD}
+                 onChange={(e) => setLaufD(e.target.value)}
+                 onBlur={() => {
+                   const v = parseFloat(laufD)
+                   if (!Number.isNaN(v) && v > 0) onUpdate({ laufD: v })
+                   else setLaufD(String(treppe.laufD))
+                 }}
+                 onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+                 style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+          <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+        </div>
+      )}
+
+      {/* Schrittmass-Tabelle: H (editierbar), S, A, 2S+A mit on/off + range */}
+      <div style={{
+        display: 'flex', flexDirection: 'column', gap: 3,
+        padding: '6px 8px', borderRadius: 4,
+        background: allOK ? 'rgba(95,168,150,0.10)' : 'rgba(200,112,80,0.08)',
+        border: '1px solid ' + (allOK ? 'rgba(95,168,150,0.4)' : 'rgba(200,112,80,0.35)'),
+        fontSize: 10, fontFamily: 'DM Mono, monospace',
+      }}>
+        {/* H — editierbar; aendert Hoehe und kippt Ziel auf "eigene" */}
+        <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+          <span style={{ width: 16 }} />
+          <span style={{ color: 'var(--text-muted)', width: 30 }}>H</span>
+          <input type="text" value={hStr}
+                 onChange={(e) => setHStr(e.target.value)}
+                 onBlur={onCommitH}
+                 onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+                 style={{
+                   width: 56, fontSize: 10, fontFamily: 'DM Mono, monospace',
+                   padding: '1px 3px', background: 'transparent',
+                   border: '1px solid ' + (hasHOver ? 'var(--accent)' : 'var(--border-light)'),
+                   color: 'var(--text-primary)',
+                 }} />
+          <span style={{ color: 'var(--text-muted)' }}>m</span>
+          {hasHOver && (
+            <button onClick={onClearHOver}
+              title="Zurueck zu Geschoss-Hoehe"
+              style={{
+                marginLeft: 'auto', fontSize: 9,
+                background: 'transparent', border: 'none',
+                color: 'var(--text-muted)', cursor: 'pointer',
+                textDecoration: 'underline',
+              }}>auto</button>
+          )}
+        </div>
+        <SollRow label="S"     value={S}   unit="m" soll={soll} sollKey="s"
+                  onUpdateSoll={onUpdateSoll} />
+        <SollRow label="A"     value={A}   unit="m" soll={soll} sollKey="a"
+                  onUpdateSoll={onUpdateSoll} />
+        <SollRow label="2S+A"  value={sa}  unit="m" soll={soll} sollKey="sa"
+                  onUpdateSoll={onUpdateSoll} />
+      </div>
+    </div>
+  )
+}
+
+function OeffnungProperties({ oeff, onUpdate, onDelete }) {
+  const isFenster = oeff.kind === 'fenster'
+  const label = isFenster ? 'Fenster' : 'Tuer'
+  const icon = isFenster ? 'window' : 'sensor_door'
+  const [breite, setBreite] = useState(String(oeff.breite ?? (isFenster ? 1.2 : 0.9)))
+  const [hoehe, setHoehe] = useState(String(oeff.hoehe ?? (isFenster ? 1.4 : 2.1)))
+  const [brueest, setBrueest] = useState(String(oeff.brueest ?? 0.9))
+  const [rahmenB, setRahmenB] = useState(String(oeff.rahmenB ?? 0.06))
+  const [rahmenTiefe, setRahmenTiefe] = useState(String(oeff.rahmenTiefe ?? 0.08))
+  useEffect(() => {
+    setBreite(String(oeff.breite ?? (isFenster ? 1.2 : 0.9)))
+    setHoehe(String(oeff.hoehe ?? (isFenster ? 1.4 : 2.1)))
+    setBrueest(String(oeff.brueest ?? 0.9))
+    setRahmenB(String(oeff.rahmenB ?? 0.06))
+    setRahmenTiefe(String(oeff.rahmenTiefe ?? 0.08))
+  }, [oeff.id, oeff.breite, oeff.hoehe, oeff.brueest, oeff.rahmenB,
+      oeff.rahmenTiefe, isFenster])
+
+  const commit = (key, val, setBack, def) => {
+    const v = parseFloat(val)
+    if (!Number.isNaN(v) && v > 0) onUpdate({ [key]: v })
+    else setBack(String(def))
+  }
+
+  const fluegel = oeff.fluegel ?? 1
+  const rahmenPos = oeff.rahmenPos ?? 'mid'
+  const simsAus = oeff.simsAus ?? 'ohne'
+  const simsIn  = oeff.simsIn ?? 'ohne'
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 8,
+      padding: 10, marginBottom: 8,
+      background: 'var(--bg-section)',
+      border: '1px solid var(--accent)',
+      borderRadius: 'var(--r-lg)',
+    }}>
+      <div style={{ display: 'flex', alignItems: 'center' }}>
+        <Icon name={icon} size={13} style={{ color: 'var(--accent)', marginRight: 6 }} />
+        <span style={{ ...labelXs, flex: 1, color: 'var(--accent)' }}>
+          {label} · {oeff.geschossName}
+        </span>
+        <button className="btn-icon-sm btn-icon-danger" onClick={onDelete} title="Loeschen">
+          <Icon name="delete" size={12} />
+        </button>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Breite</span>
+        <input type="text" value={breite}
+               onChange={(e) => setBreite(e.target.value)}
+               onBlur={() => commit('breite', breite, setBreite, oeff.breite)}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+      </div>
+
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>Hoehe</span>
+        <input type="text" value={hoehe}
+               onChange={(e) => setHoehe(e.target.value)}
+               onBlur={() => commit('hoehe', hoehe, setHoehe, oeff.hoehe)}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+      </div>
+
+      {isFenster && (
+        <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+          <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+                title="Bruestungshoehe ueber UK der Wand">
+            Bruest.
+          </span>
+          <input type="text" value={brueest}
+                 onChange={(e) => setBrueest(e.target.value)}
+                 onBlur={() => {
+                   const v = parseFloat(brueest)
+                   if (!Number.isNaN(v) && v >= 0) onUpdate({ brueest: v })
+                   else setBrueest(String(oeff.brueest))
+                 }}
+                 onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+                 style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+          <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+        </div>
+      )}
+
+      {/* Referenz-Lage: wo sitzt der Klick-Punkt in der Oeffnung */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Lage des Klick-Punkts in der Oeffnung">
+          Ref
+        </span>
+        <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+          {OEFF_REFERENZ_OPTIONS.map(o => (
+            <button key={o.code}
+              onClick={() => onUpdate({ oeffReferenz: o.code })}
+              className={(oeff.oeffReferenz || 'mid') === o.code ? 'btn-contained' : 'btn-outlined'}
+              style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}
+              title={o.hint}>
+              {o.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div style={{ height: 1, background: 'var(--border-light)', margin: '2px 0' }} />
+
+      {/* Rahmen-Profil (Breite × Tiefe) — beide Felder gleich breit */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Rahmen-Profil: Breite (in Wandflaeche) × Tiefe (entlang Wandnormale)">
+          Rahmen
+        </span>
+        <input type="text" value={rahmenB}
+               onChange={(e) => setRahmenB(e.target.value)}
+               onBlur={() => commit('rahmenB', rahmenB, setRahmenB, oeff.rahmenB)}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               title="Profil-Breite (sichtbar in der Fassade)"
+               style={{ flex: '1 1 0', minWidth: 0, width: 0, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>×</span>
+        <input type="text" value={rahmenTiefe}
+               onChange={(e) => setRahmenTiefe(e.target.value)}
+               onBlur={() => commit('rahmenTiefe', rahmenTiefe, setRahmenTiefe, oeff.rahmenTiefe)}
+               onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+               title="Rahmen-Tiefe (Lage in der Wand)"
+               style={{ flex: '1 1 0', minWidth: 0, width: 0, fontSize: 11, fontFamily: 'DM Mono, monospace' }} />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>m</span>
+      </div>
+
+      {/* Rahmen-Lage im Wandquerschnitt */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Lage des Rahmens im Wandquerschnitt">
+          Lage
+        </span>
+        <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+          {RAHMEN_POS_OPTIONS.map(o => (
+            <button key={o.code}
+              onClick={() => onUpdate({ rahmenPos: o.code })}
+              className={rahmenPos === o.code ? 'btn-contained' : 'btn-outlined'}
+              style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}
+              title={o.hint}>
+              {o.label}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      {/* Fluegel-Anzahl */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+              title="Anzahl Fluegel (vertikale Unterteilung)">
+          Fluegel
+        </span>
+        <div style={{ flex: 1, display: 'flex', gap: 2 }}>
+          {[1, 2, 3, 4].map(n => (
+            <button key={n}
+              onClick={() => onUpdate({ fluegel: n })}
+              className={fluegel === n ? 'btn-contained' : 'btn-outlined'}
+              style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}>
+              {n}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      {/* Sims-Stile (aussen / innen) — nur fuer Fenster */}
+      {isFenster && (
+        <>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+            <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+                  title="Aussensims — Platte unter Oeffnung, ragt aussen heraus">
+              Sims a.
+            </span>
+            <select value={simsAus}
+                    onChange={(e) => onUpdate({ simsAus: e.target.value })}
+                    style={{ flex: 1, fontSize: 11 }}>
+              {SIMS_OPTIONS.map(o =>
+                <option key={o.code} value={o.code}>{o.label}</option>)}
+            </select>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+            <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}
+                  title="Innensims — Platte unter Oeffnung, ragt innen heraus">
+              Sims i.
+            </span>
+            <select value={simsIn}
+                    onChange={(e) => onUpdate({ simsIn: e.target.value })}
+                    style={{ flex: 1, fontSize: 11 }}>
+              {SIMS_OPTIONS.map(o =>
+                <option key={o.code} value={o.code}>{o.label}</option>)}
+            </select>
+          </div>
+        </>
+      )}
+
+      {/* Glas-Toggle: bei Tueren ersetzt Glas das Tuerblatt (verglaste Tuer) */}
+      <div style={{ display: 'flex', gap: 4 }}>
+        <button
+          onClick={() => onUpdate({ glas: !oeff.glas })}
+          className={oeff.glas ? 'btn-contained' : 'btn-outlined'}
+          style={{ flex: 1, padding: '3px 6px', fontSize: 10 }}
+          title={isFenster ? 'Glasscheibe sichtbar' : 'Verglaste Tuer (statt Tuerblatt)'}>
+          {isFenster ? 'Glas' : 'Verglast'} {oeff.glas ? '✓' : ''}
+        </button>
+      </div>
+    </div>
+  )
+}
+
+
+// Wiederverwendete UI fuer UK/OK-Felder mit Auto/Custom-Toggle
+function AutoOverrideField({ label, auto, autoValue, rawValue, onChangeRaw, onToggle, onCommit }) {
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+      <span style={{ fontSize: 10, color: 'var(--text-muted)', width: 50 }}>{label}</span>
+      <button onClick={onToggle}
+              className={auto ? 'btn-contained' : 'btn-outlined'}
+              style={{ padding: '3px 8px', fontSize: 10 }}
+              title={auto ? 'Folgt Geschoss' : 'Eigener Wert'}>
+        {auto ? 'Auto' : 'Custom'}
+      </button>
+      <input type="text"
+             value={auto ? fmtNum(autoValue) : rawValue}
+             disabled={auto}
+             onChange={(e) => onChangeRaw(e.target.value)}
+             onBlur={onCommit}
+             onKeyDown={(e) => { if (e.key === 'Enter') e.target.blur() }}
+             style={{ flex: 1, fontSize: 11, fontFamily: 'DM Mono, monospace',
+                      opacity: auto ? 0.6 : 1 }} />
+    </div>
+  )
+}
diff --git a/src/GestaltungApp.jsx b/src/GestaltungApp.jsx
new file mode 100644
index 0000000..9518a58
--- /dev/null
+++ b/src/GestaltungApp.jsx
@@ -0,0 +1,516 @@
+import { useState, useEffect, useRef } from 'react'
+import Icon from './components/Icon'
+import {
+  onMessage, notifyReady,
+  requestSelection, setColorSource, setLwSource, setLinetypeSource, setLinetypeScale, setFill,
+} from './lib/rhinoBridge'
+
+const LW_PRESETS = [0.02, 0.10, 0.13, 0.18, 0.25, 0.35, 0.50, 0.70, 1.00]
+
+// ---------------------------------------------------------------------------
+
+function SectionHead({ title }) {
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 8, padding: '10px 14px 6px' }}>
+      <span style={{ fontSize: 11, fontWeight: 500, color: 'var(--text-primary)' }}>
+        {title}
+      </span>
+      <div style={{ flex: 1, height: 1, background: 'var(--border)' }} />
+    </div>
+  )
+}
+
+/** Source-Dropdown im Vectorworks-Stil: Link-Icon + Label + Caret */
+function SourceSelect({ source, onChange, overrideLabel = 'Eigene' }) {
+  return (
+    <div style={{ position: 'relative', display: 'flex' }}>
+      <Icon
+        name={source === 'layer' ? 'link' : 'link_off'}
+        size={14}
+        style={{
+          position: 'absolute', left: 10, top: '50%', transform: 'translateY(-50%)',
+          color: source === 'layer' ? 'var(--text-primary)' : 'var(--text-muted)',
+          pointerEvents: 'none',
+        }}
+      />
+      <select
+        value={source}
+        onChange={(ev) => onChange(ev.target.value)}
+        style={{
+          paddingLeft: 30, flex: 1,
+          fontFamily: 'var(--font)',
+          fontWeight: 500,
+          fontSize: 11,
+          textTransform: 'none',
+          /* borderRadius/background uebernehmen wir von der globalen <select>-
+             Pille (index.css) damit's optisch konsistent mit dem Fill-Dropdown
+             wirkt. Nur paddingLeft ueberschreiben wegen Link-Icon. */
+        }}
+      >
+        <option value="layer">Nach Ebene</option>
+        <option value="object">{overrideLabel}</option>
+      </select>
+    </div>
+  )
+}
+
+function ColorBar({ color, onChange, height = 22 }) {
+  // Readonly-Variante als reines Anzeige-Rechteck
+  if (!onChange) {
+    return (
+      <div
+        style={{
+          width: '100%', height,
+          background: color,
+          borderRadius: 'var(--r)',
+          border: '1px solid var(--border)',
+          boxShadow: 'inset 0 1px 2px rgba(0,0,0,0.08)',
+        }}
+      />
+    )
+  }
+  // Editierbar: <label> umschliesst einen sichtbaren Swatch-Div + einen
+  // unsichtbaren color-input. Click aufs Label routet automatisch zum Input
+  // und oeffnet den nativen Picker. Die Anzeige (div background) ist voll
+  // unter unserer Kontrolle und wird durch local-State live aktualisiert.
+  // Debounce 150ms verhindert Python-Spam waehrend Picker-Drag.
+  const [local, setLocal] = useState(color || '#888888')
+  const timer = useRef(null)
+  useEffect(() => {
+    if (color && color !== local) {
+      // Selektion wechselt -> evtl. noch laufenden Debounce abbrechen,
+      // sonst feuert die alte Pick-Farbe auf das neue Objekt.
+      if (timer.current) { clearTimeout(timer.current); timer.current = null }
+      setLocal(color)
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [color])
+
+  const handle = (ev) => {
+    const v = ev.target.value
+    if (!v || !/^#[0-9a-fA-F]{6}$/.test(v)) return
+    setLocal(v)
+    if (timer.current) clearTimeout(timer.current)
+    timer.current = setTimeout(() => onChange(v), 150)
+  }
+
+  return (
+    <label
+      style={{
+        position: 'relative', display: 'block',
+        width: '100%', height,
+        borderRadius: 'var(--r)',
+        border: '1px solid var(--border)',
+        overflow: 'hidden',
+        cursor: 'pointer',
+      }}
+    >
+      <div
+        style={{
+          position: 'absolute', inset: 0,
+          background: local,
+          pointerEvents: 'none',
+          boxShadow: 'inset 0 1px 2px rgba(0,0,0,0.08)',
+        }}
+      />
+      <input
+        type="color"
+        value={local}
+        onInput={handle}
+        onChange={handle}
+        style={{
+          position: 'absolute', inset: 0,
+          width: '100%', height: '100%',
+          opacity: 0,
+          border: 'none', padding: 0, margin: 0,
+          cursor: 'pointer',
+          background: 'transparent',
+        }}
+      />
+    </label>
+  )
+}
+
+/** Number-Input mit Commit-on-Blur/Enter und externer Sync. */
+function NumInput({ value, onCommit, step = 0.01, min, max, width = 56, mono = true }) {
+  const [val, setVal] = useState(String(value))
+  useEffect(() => { setVal(typeof value === 'number' ? value.toFixed(2) : String(value)) }, [value])
+  const commit = () => {
+    const v = parseFloat(val)
+    if (!isNaN(v) && (min == null || v >= min) && (max == null || v <= max)) onCommit(v)
+    else setVal(typeof value === 'number' ? value.toFixed(2) : String(value))
+  }
+  return (
+    <input
+      type="number" step={step} min={min} max={max}
+      value={val}
+      onChange={(ev) => setVal(ev.target.value)}
+      onBlur={commit}
+      onKeyDown={(ev) => {
+        if (ev.key === 'Enter') ev.target.blur()
+        if (ev.key === 'Escape') { setVal(typeof value === 'number' ? value.toFixed(2) : String(value)); ev.target.blur() }
+      }}
+      style={{ width, textAlign: 'right', fontSize: 11, fontFamily: mono ? 'var(--font-mono)' : 'var(--font)' }}
+    />
+  )
+}
+
+function LwPreview({ lw }) {
+  return (
+    <div style={{
+      flex: 1, height: 22,
+      background: 'var(--bg-item)',
+      border: '1px solid var(--border)',
+      borderRadius: 'var(--r)',
+      display: 'flex', alignItems: 'center',
+      padding: '0 8px', overflow: 'hidden',
+    }}>
+      <div style={{
+        width: '100%',
+        height: Math.max(1, Math.min(8, lw * 6)),
+        background: 'var(--text-primary)',
+        borderRadius: 1,
+      }} />
+    </div>
+  )
+}
+
+// ---------------------------------------------------------------------------
+// Pen color
+
+function PenColor({ sel }) {
+  const source     = sel.colorSource === 'mixed' ? 'object' : (sel.colorSource || 'layer')
+  const effective  = source === 'object'
+    ? (sel.color || '#888888')
+    : (sel.layerColor || '#888888')
+
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 6 }}>
+      <SourceSelect
+        source={source}
+        onChange={(v) => setColorSource(v, v === 'object' ? effective : null)}
+      />
+      <ColorBar
+        color={effective}
+        onChange={(c) => setColorSource('object', c)}
+      />
+    </div>
+  )
+}
+
+// LW row inline
+function PenLw({ sel }) {
+  const source     = sel.lwSource === 'mixed' ? 'object' : (sel.lwSource || 'layer')
+  const effective  = source === 'object'
+    ? (sel.lw ?? 0.18)
+    : (sel.layerLw ?? 0.18)
+
+  const step = (dir) => {
+    let next
+    if (dir > 0) next = LW_PRESETS.find(p => p > effective + 0.001)
+    else         next = [...LW_PRESETS].reverse().find(p => p < effective - 0.001)
+    if (next !== undefined) setLwSource('object', next)
+  }
+
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+      <button
+        className="btn-icon-sm"
+        onClick={() => setLwSource(source === 'object' ? 'layer' : 'object', source === 'object' ? null : effective)}
+        title={source === 'object' ? 'Nach Ebene' : 'Uebersteuern'}
+        style={{ color: source === 'layer' ? 'var(--text-primary)' : 'var(--text-muted)' }}
+      >
+        <Icon name={source === 'layer' ? 'link' : 'link_off'} size={14} />
+      </button>
+      <LwPreview lw={effective} />
+      <NumInput
+        value={effective}
+        onCommit={(v) => setLwSource('object', v)}
+        step={0.01} min={0.01} max={2.0}
+        width={52}
+      />
+      <div style={{ display: 'flex', flexDirection: 'column' }}>
+        <button className="btn-step" onClick={() => step(+1)}><Icon name="arrow_drop_up" size={12}/></button>
+        <button className="btn-step" onClick={() => step(-1)}><Icon name="arrow_drop_down" size={12}/></button>
+      </div>
+    </div>
+  )
+}
+
+function PenLinetype({ sel }) {
+  const source = sel.linetypeSource === 'mixed' ? 'object' : (sel.linetypeSource || 'layer')
+  const effective = source === 'object'
+    ? (sel.linetype || sel.layerLinetype || (sel.linetypes?.[0] || ''))
+    : (sel.layerLinetype || (sel.linetypes?.[0] || ''))
+  const options = sel.linetypes || []
+  const hasOption = options.includes(effective)
+  const ltScale = sel.linetypeScale ?? 1.0
+  const isSolid = (effective || '').toLowerCase() === 'continuous'
+
+  // Spezialwert "__layer__" damit dieselbe Pill wie bei Color/Fill — Klick
+  // auf den Wert "Nach Ebene" wechselt zurueck auf source=layer.
+  const ltCurrent = source === 'layer' ? '__layer__' : effective
+  const ltChange = (v) => {
+    if (v === '__layer__') {
+      setLinetypeSource('layer', null)
+    } else {
+      setLinetypeSource('object', v)
+    }
+  }
+  return (
+    <>
+      <div style={{ position: 'relative', display: 'flex' }}>
+        <Icon
+          name={source === 'layer' ? 'link' : 'link_off'}
+          size={14}
+          style={{
+            position: 'absolute', left: 10, top: '50%', transform: 'translateY(-50%)',
+            color: source === 'layer' ? 'var(--text-primary)' : 'var(--text-muted)',
+            pointerEvents: 'none',
+          }}
+        />
+        <select
+          value={ltCurrent}
+          onChange={(ev) => ltChange(ev.target.value)}
+          style={{
+            paddingLeft: 30, flex: 1,
+            fontFamily: 'var(--font)',
+            fontWeight: 500,
+            fontSize: 11,
+            textTransform: 'none',
+          }}
+        >
+          <option value="__layer__">Nach Ebene</option>
+          {!hasOption && effective && <option value={effective}>{effective}</option>}
+          {options.map(n => <option key={n} value={n}>{n}</option>)}
+        </select>
+      </div>
+      {!isSolid && (
+        <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+          <Icon name="open_in_full" size={14} style={{ color: 'var(--text-muted)', flexShrink: 0 }} title="Linientyp-Skalierung" />
+          <NumInput
+            value={ltScale} step={0.1} min={0.001} max={1000}
+            onCommit={(v) => setLinetypeScale(v)}
+            width={70}
+          />
+          <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>× Pattern</span>
+        </div>
+      )}
+    </>
+  )
+}
+
+function PenBlock({ sel }) {
+  return (
+    <div style={{ padding: '0 14px 12px', display: 'flex', flexDirection: 'column', gap: 8 }}>
+      <PenColor    sel={sel} />
+      <PenLw       sel={sel} />
+      <PenLinetype sel={sel} />
+      {sel.layerName && (
+        <div style={{ fontSize: 9, color: 'var(--text-muted)', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+          Ebene: {sel.layerName}
+        </div>
+      )}
+    </div>
+  )
+}
+
+// ---------------------------------------------------------------------------
+
+function FillBlock({ sel }) {
+  if (sel.canFill !== true) {
+    return (
+      <div style={{ padding: '0 14px 12px', fontSize: 10, color: 'var(--text-muted)', fontStyle: 'italic' }}>
+        Keine geschlossenen 2D-Kurven in der Auswahl.
+      </div>
+    )
+  }
+  const enabled    = sel.fillEnabled === true
+  const source     = sel.fillSource   || 'layer'
+  const color      = sel.fillColor    || sel.layerColor || '#cccccc'
+  const objectPat  = enabled ? (sel.fillPattern || 'Solid') : 'None'
+  const scale      = sel.fillScale    ?? 1.0
+  const rotation   = sel.fillRotation ?? 0.0
+  const patternList = sel.hatchPatterns || ['Solid']
+
+  // Special-Value im kombinierten Dropdown:
+  //   "__layer__" = Nach Ebene  -> Pattern/Scale/Rot/Color aus Ebenen-Einstellungen
+  //   "None"      = keine Fuellung
+  //   "Solid"     = volle Flaeche (Eigene Quelle)
+  //   sonst       = Hatch-Pattern (Eigene Quelle)
+  // source=='layer' -> immer "Nach Ebene" zeigen, auch wenn (noch) keine Hatch
+  // existiert (Ebene hat halt aktuell kein Pattern -> wird gefuellt, sobald
+  // eines definiert wird).
+  const currentValue = source === 'layer'
+    ? '__layer__'
+    : (!enabled ? 'None' : objectPat)
+
+  const dropdownOptions = [
+    { value: '__layer__', label: 'Nach Ebene' },
+    { value: 'None',      label: 'None' },
+    { value: 'Solid',     label: 'Solid' },
+    ...patternList
+      .filter(p => p !== 'Solid' && p !== 'None')
+      .map(p => ({ value: p, label: p })),
+  ]
+  // Falls aktueller Pattern-Name nicht in der Liste, anhaengen damit's nicht verloren geht
+  if (currentValue !== '__layer__' && currentValue !== 'None'
+      && !dropdownOptions.some(o => o.value === currentValue)) {
+    dropdownOptions.push({ value: currentValue, label: currentValue })
+  }
+
+  const applyPattern = (newValue) => {
+    if (newValue === '__layer__') {
+      // Source -> layer, Python liest Pattern/Scale/Rot/Color aus Layer.SectionStyle
+      setFill(true, 'layer', null, null, null, null)
+    } else if (newValue === 'None') {
+      setFill(false, source, null, null, scale, rotation)
+    } else {
+      // Eigene Quelle mit gewaehltem Pattern
+      setFill(true, 'object', color, newValue, scale, rotation)
+    }
+  }
+  // Anpassungen wenn schon im "Eigene"-Modus (Scale/Rotation/Color/Source-Toggle)
+  const apply = (over) => setFill(
+    true,
+    over.source    ?? (source === 'layer' ? 'object' : source),
+    (over.source ?? source) === 'layer' ? null : (over.color ?? color),
+    over.pattern   ?? (objectPat === 'None' ? 'Solid' : objectPat),
+    over.scale     ?? scale,
+    over.rotation  ?? rotation,
+  )
+  const isLayerSource = source === 'layer'
+
+  return (
+    <div style={{ padding: '0 14px 12px', display: 'flex', flexDirection: 'column', gap: 8 }}>
+      {/* Pill mit Link-Icon im Dropdown (analog zur Pen-Source-Pill).
+          Link-Icon wenn "Nach Ebene", sonst link_off. */}
+      <div style={{ position: 'relative', display: 'flex' }}>
+        <Icon
+          name={isLayerSource ? 'link' : 'link_off'}
+          size={14}
+          style={{
+            position: 'absolute', left: 10, top: '50%', transform: 'translateY(-50%)',
+            color: isLayerSource ? 'var(--text-primary)' : 'var(--text-muted)',
+            pointerEvents: 'none',
+          }}
+        />
+        <select
+          value={currentValue}
+          onChange={(ev) => applyPattern(ev.target.value)}
+          style={{
+            paddingLeft: 30, flex: 1,
+            fontFamily: 'var(--font)',
+            fontWeight: 500,
+            fontSize: 11,
+            textTransform: 'none',
+          }}
+        >
+          {dropdownOptions.map(o => (
+            <option key={o.value} value={o.value}>{o.label}</option>
+          ))}
+        </select>
+      </div>
+      {currentValue !== 'None' && (
+        <>
+          <ColorBar
+            color={color}
+            onChange={isLayerSource ? undefined : ((c) => apply({ source: 'object', color: c }))}
+          />
+          {!isLayerSource && objectPat !== 'Solid' && (
+            <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+              <Icon name="aspect_ratio" size={14} style={{ color: 'var(--text-muted)', flexShrink: 0 }} title="Skalierung" />
+              <NumInput
+                value={scale} step={0.05} min={0.001}
+                onCommit={(v) => apply({ scale: v })}
+                width={70}
+              />
+              <Icon name="rotate_right" size={14} style={{ color: 'var(--text-muted)', flexShrink: 0 }} title="Winkel (Grad)" />
+              <NumInput
+                value={rotation} step={5}
+                onCommit={(v) => apply({ rotation: v })}
+                width={56}
+              />
+              <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>°</span>
+            </div>
+          )}
+          {isLayerSource && (
+            <div style={{ fontSize: 10, color: 'var(--text-muted)', fontStyle: 'italic' }}>
+              Pattern, Skalierung &amp; Farbe folgen Layer-Section-Style
+            </div>
+          )}
+        </>
+      )}
+    </div>
+  )
+}
+
+function EmptyState() {
+  return (
+    <div style={{
+      padding: '60px 24px', textAlign: 'center',
+      color: 'var(--text-muted)', fontSize: 11,
+      display: 'flex', flexDirection: 'column', gap: 14, alignItems: 'center',
+    }}>
+      <Icon name="touch_app" size={36} style={{ color: 'var(--text-muted)' }} />
+      <div>Waehle ein oder mehrere Objekte in Rhino aus.</div>
+    </div>
+  )
+}
+
+// ---------------------------------------------------------------------------
+
+export default function GestaltungApp() {
+  const [sel, setSel] = useState({ count: 0, linetypes: [] })
+
+  useEffect(() => {
+    onMessage('SELECTION', (data) => setSel(data || { count: 0, linetypes: [] }))
+    notifyReady()
+    const blockContext = (ev) => ev.preventDefault()
+    document.addEventListener('contextmenu', blockContext)
+    return () => document.removeEventListener('contextmenu', blockContext)
+  }, [])
+
+  const empty = sel.count === 0
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column',
+      height: '100vh', overflow: 'hidden',
+      background: 'var(--bg-base)',
+      position: 'relative',
+    }}>
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 8,
+        padding: '10px 14px',
+        borderBottom: '1px solid var(--border-light)',
+      }}>
+        <Icon name="tune" size={16} style={{ color: 'var(--text-muted)' }} />
+        <span style={{ flex: 1, fontWeight: 500, fontSize: 12, color: 'var(--text-primary)' }}>
+          Attribute
+        </span>
+        {sel.count > 0 && <span className="chip">{sel.count}</span>}
+        <button className="btn-icon-sm" onClick={() => requestSelection()} title="Aktualisieren">
+          <Icon name="refresh" size={14} />
+        </button>
+      </div>
+
+      <div style={{ flex: 1, overflowY: 'auto' }}>
+        {empty ? <EmptyState /> : (
+          <>
+            <SectionHead title="Fill" />
+            <FillBlock sel={sel} />
+
+            <SectionHead title="Pen" />
+            <PenBlock sel={sel} />
+
+            <SectionHead title="Effects" />
+            <div style={{ padding: '0 14px 14px', fontSize: 10, color: 'var(--text-muted)', fontStyle: 'italic' }}>
+              Schatten / Transparenz folgen spaeter.
+            </div>
+          </>
+        )}
+      </div>
+    </div>
+  )
+}
diff --git a/src/LayoutsApp.jsx b/src/LayoutsApp.jsx
new file mode 100644
index 0000000..45bcd02
--- /dev/null
+++ b/src/LayoutsApp.jsx
@@ -0,0 +1,836 @@
+import { useEffect, useState, useRef } from 'react'
+import Icon from './components/Icon'
+import ContextMenu from './components/ContextMenu'
+import {
+  onMessage, notifyReady,
+  listLayouts, newLayout, deleteLayout, renameLayout, activateLayout,
+  addDetail, deleteDetail, bindAusschnitt, syncDetail, syncLayout,
+  setPageSize, exportPdf, exportPdfAll, exportPdfMany,
+  addLayoutFolder, removeLayoutFolder, setLayoutFolder,
+} from './lib/rhinoBridge'
+
+const PAPER_SIZES = ['A4', 'A3', 'A2', 'A1', 'A0', 'Letter']
+
+const PAPER_FORMATS_MM = {
+  A0: [841, 1189], A1: [594, 841], A2: [420, 594], A3: [297, 420],
+  A4: [210, 297], Letter: [216, 279],
+}
+
+function detectFormat(wMm, hMm, tol = 2) {
+  if (!(wMm > 0) || !(hMm > 0)) return null
+  const a = Math.min(wMm, hMm), b = Math.max(wMm, hMm)
+  for (const [name, [sw, sh]] of Object.entries(PAPER_FORMATS_MM)) {
+    if (Math.abs(a - sw) <= tol && Math.abs(b - sh) <= tol) return name
+  }
+  return null
+}
+
+function formatLabel(wMm, hMm) {
+  if (!(wMm > 0) || !(hMm > 0)) return '—'
+  const f = detectFormat(wMm, hMm)
+  if (!f) return `${Math.round(wMm)}×${Math.round(hMm)}mm`
+  const landscape = wMm > hMm
+  return landscape ? `${f} ↔` : `${f} ↕`
+}
+
+function OrientationBadge({ landscape }) {
+  return (
+    <span title={landscape ? 'Querformat' : 'Hochformat'}
+      style={{
+        display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+        width: 24, height: 24, flexShrink: 0,
+        borderRadius: 999,
+        background: 'var(--bg-input)',
+        color: 'var(--accent)',
+      }}>
+      <Icon name={landscape ? 'crop_landscape' : 'crop_portrait'} size={14} />
+    </span>
+  )
+}
+
+const cardStyle = {
+  background: 'var(--bg-section)',
+  border: '1px solid var(--border)',
+  borderRadius: 'var(--r-lg)',
+  padding: 8,
+  marginBottom: 6,
+}
+
+const labelXs = {
+  fontSize: 10, fontWeight: 600, color: 'var(--text-muted)',
+  letterSpacing: '0.06em', textTransform: 'uppercase',
+}
+
+// Inline-editierbarer Name — Doppelklick aktiviert, Enter/Blur committet.
+// forceEdit triggert Edit-Mode von aussen (z.B. Kontextmenue „Umbenennen").
+function EditableName({ value, onCommit, style, title, forceEdit, onEditDone }) {
+  const [editing, setEditing] = useState(false)
+  const [text, setText] = useState(value || '')
+  const inputRef = useRef(null)
+  useEffect(() => { if (!editing) setText(value || '') }, [value, editing])
+  useEffect(() => { if (editing) { inputRef.current?.focus(); inputRef.current?.select() } }, [editing])
+  useEffect(() => { if (forceEdit) setEditing(true) }, [forceEdit])
+  if (editing) {
+    return (
+      <input
+        ref={inputRef}
+        value={text}
+        onChange={(e) => setText(e.target.value)}
+        onBlur={() => {
+          setEditing(false)
+          const t = text.trim()
+          if (t && t !== value) onCommit(t)
+          else setText(value || '')
+          onEditDone && onEditDone()
+        }}
+        onKeyDown={(e) => {
+          if (e.key === 'Enter') e.currentTarget.blur()
+          else if (e.key === 'Escape') {
+            setText(value || ''); setEditing(false); onEditDone && onEditDone()
+          }
+        }}
+        onClick={(e) => e.stopPropagation()}
+        style={{ flex: 1, fontSize: 'inherit', fontFamily: 'inherit', ...style }}
+      />
+    )
+  }
+  return (
+    <span
+      onDoubleClick={(e) => { e.stopPropagation(); setEditing(true) }}
+      title={title || 'Doppelklick zum Umbenennen'}
+      style={{
+        flex: 1, cursor: 'text',
+        overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+        ...style,
+      }}
+    >
+      {value || '(unbenannt)'}
+    </span>
+  )
+}
+
+export default function LayoutsApp() {
+  const [state, setState] = useState({ layouts: [], snapshots: [], details: {}, folders: [] })
+  const [selectedId, setSelectedId] = useState(null)
+  const [dialog, setDialog] = useState(null)  // { mode: 'new' | 'edit', layout? }
+  const [checked, setChecked] = useState(new Set())  // Multi-Select IDs
+  const [collapsedFolders, setCollapsedFolders] = useState(new Set())
+  const [draggingId, setDraggingId] = useState(null)
+  const [dragTarget, setDragTarget] = useState(null)  // '__root' | folderName
+  const [ctxMenu, setCtxMenu] = useState(null)         // {x,y,kind,id}
+  const [renamingId, setRenamingId] = useState(null)   // signal to inline-edit
+
+  useEffect(() => {
+    onMessage('STATE', (s) => setState((prev) => ({ ...prev, ...s })))
+    notifyReady()
+  }, [])
+
+  const layouts = state.layouts || []
+  const snaps   = state.snapshots || []
+  const folders = state.folders || []
+  const details = (selectedId && state.details && state.details[selectedId]) || []
+  const selected = layouts.find(l => l.id === selectedId)
+
+  // Layouts gruppieren: Root + per Folder
+  const grouped = { __root: [] }
+  for (const f of folders) grouped[f] = []
+  for (const l of layouts) {
+    const f = l.folder || '__root'
+    if (!grouped[f]) grouped[f] = []
+    grouped[f].push(l)
+  }
+
+  const toggleCheck = (id) => {
+    setChecked(prev => {
+      const next = new Set(prev)
+      if (next.has(id)) next.delete(id); else next.add(id)
+      return next
+    })
+  }
+  const toggleFolderCollapse = (name) => {
+    setCollapsedFolders(prev => {
+      const next = new Set(prev)
+      if (next.has(name)) next.delete(name); else next.add(name)
+      return next
+    })
+  }
+  const checkAllInFolder = (folderLayouts) => {
+    setChecked(prev => {
+      const next = new Set(prev)
+      const allIn = folderLayouts.every(l => next.has(l.id))
+      if (allIn) folderLayouts.forEach(l => next.delete(l.id))
+      else       folderLayouts.forEach(l => next.add(l.id))
+      return next
+    })
+  }
+  const handleExportSelection = () => {
+    const ids = [...checked].filter(id => layouts.find(l => l.id === id))
+    if (ids.length === 0) return
+    exportPdfMany(ids, 300)
+  }
+  const handleExportFolder = (folderName) => {
+    const ids = (grouped[folderName] || []).map(l => l.id)
+    if (ids.length === 0) return
+    exportPdfMany(ids, 300)
+  }
+  const handleNewFolder = () => {
+    const name = window.prompt('Name fuer neuen Ordner:')
+    if (name && name.trim()) addLayoutFolder(name.trim())
+  }
+
+  // Kontextmenue-Items pro Layout
+  const layoutCtxItems = (l) => [
+    { label: 'In Rhino oeffnen',   icon: 'open_in_new',
+      onClick: () => activateLayout(l.id) },
+    { label: 'Umbenennen',         icon: 'edit',
+      onClick: () => setRenamingId(l.id) },
+    { divider: true },
+    { label: 'Als PDF exportieren', icon: 'picture_as_pdf',
+      onClick: () => exportPdf(l.id, 300) },
+    { label: 'Papierformat aendern', icon: 'aspect_ratio',
+      onClick: () => setDialog({ mode: 'edit', layout: l }) },
+    { divider: true },
+    ...(folders.length > 0 ? [
+      ...folders.map(f => ({
+        label: `Verschieben → ${f}`,
+        icon: 'folder',
+        disabled: l.folder === f,
+        onClick: () => setLayoutFolder(l.id, f),
+      })),
+      { label: 'Aus Ordner entfernen',
+        icon: 'folder_off',
+        disabled: !l.folder,
+        onClick: () => setLayoutFolder(l.id, '') },
+      { divider: true },
+    ] : []),
+    { label: 'Loeschen',           icon: 'delete', danger: true,
+      onClick: () => {
+        if (window.confirm(`Layout "${l.name}" loeschen?`)) deleteLayout(l.id)
+      } },
+  ]
+
+  // Kontextmenue-Items pro Ordner
+  const folderCtxItems = (folderName) => {
+    const items = grouped[folderName] || []
+    return [
+      { label: collapsedFolders.has(folderName) ? 'Aufklappen' : 'Einklappen',
+        icon: collapsedFolders.has(folderName) ? 'expand_more' : 'expand_less',
+        onClick: () => toggleFolderCollapse(folderName) },
+      { divider: true },
+      { label: 'Alle ankreuzen / abwaehlen',
+        icon: 'check_box',
+        onClick: () => checkAllInFolder(items) },
+      { label: `Ordner als PDF (${items.length})`,
+        icon: 'picture_as_pdf',
+        disabled: items.length === 0,
+        onClick: () => handleExportFolder(folderName) },
+      { divider: true },
+      { label: 'Ordner umbenennen',
+        icon: 'edit',
+        onClick: () => {
+          const next = window.prompt('Neuer Ordner-Name:', folderName)
+          if (next && next.trim() && next !== folderName) {
+            // Atomar via Server-Side waere besser; simpler: alle Layouts
+            // umhaengen + alten loeschen + neuen anlegen.
+            addLayoutFolder(next.trim())
+            items.forEach(l => setLayoutFolder(l.id, next.trim()))
+            removeLayoutFolder(folderName)
+          }
+        } },
+      { label: 'Ordner loeschen',
+        icon: 'folder_off', danger: true,
+        onClick: () => {
+          if (window.confirm(`Ordner "${folderName}" loeschen? Layouts werden zur Wurzel verschoben.`))
+            removeLayoutFolder(folderName)
+        } },
+    ]
+  }
+
+  // Drag&Drop-Handler — analog Ausschnitte-Pattern
+  const handleDragOver = (folderName) => (ev) => {
+    ev.preventDefault()
+    ev.dataTransfer.dropEffect = 'move'
+    setDragTarget(folderName || '__root')
+  }
+  const handleDragLeave = () => () => setDragTarget(null)
+  const handleDrop = (folderName) => (ev) => {
+    ev.preventDefault()
+    setDragTarget(null)
+    const id = ev.dataTransfer.getData('text/plain') || draggingId
+    if (id) setLayoutFolder(id, folderName || '')
+    setDraggingId(null)
+  }
+
+  // Auto-Select erstes Layout wenn nichts gewaehlt
+  useEffect(() => {
+    if (selectedId == null && layouts.length > 0) setSelectedId(layouts[0].id)
+    if (selectedId != null && !layouts.find(l => l.id === selectedId)) {
+      setSelectedId(layouts[0]?.id || null)
+    }
+  }, [layouts, selectedId])
+
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column',
+      height: '100vh', overflow: 'hidden',
+      background: 'var(--bg-base)', color: 'var(--text-primary)',
+      fontFamily: 'var(--font)', fontSize: 11,
+    }}>
+      {/* Header */}
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 6,
+        padding: '8px 10px',
+        borderBottom: '1px solid var(--border)',
+      }}>
+        <span style={{ flex: 1, fontWeight: 600, letterSpacing: '0.08em' }}>LAYOUTS</span>
+        <button
+          onClick={handleExportSelection}
+          className="btn-icon-tonal"
+          disabled={checked.size === 0}
+          title={checked.size > 0
+            ? `Auswahl (${checked.size}) als ein PDF exportieren`
+            : 'Erst Layouts ankreuzen'}
+          style={{ display: 'flex', alignItems: 'center', gap: 4 }}
+        >
+          <Icon name="picture_as_pdf" size={14} />
+          {checked.size > 0 && <span style={{ fontSize: 10 }}>({checked.size})</span>}
+        </button>
+        <button
+          onClick={() => exportPdfAll(300)}
+          className="btn-icon-tonal"
+          disabled={layouts.length === 0}
+          title="Alle Layouts als ein PDF exportieren"
+        >
+          <Icon name="picture_as_pdf" size={14} />
+          <span style={{ fontSize: 9, marginLeft: 2 }}>·∗</span>
+        </button>
+        <button
+          onClick={handleNewFolder}
+          className="btn-icon-tonal"
+          title="Neuer Ordner"
+        >
+          <Icon name="create_new_folder" size={14} />
+        </button>
+        <button
+          onClick={() => setDialog({ mode: 'new' })}
+          className="btn-add"
+          title="Neues Layout erstellen"
+        >
+          <Icon name="add" size={16} />
+        </button>
+        <button
+          onClick={() => listLayouts()}
+          className="btn-icon-tonal"
+          title="Aktualisieren"
+        >
+          <Icon name="refresh" size={14} />
+        </button>
+      </div>
+
+      <div style={{ flex: 1, overflowY: 'auto', overflowX: 'hidden', padding: 8 }}>
+        {/* Layout-Liste */}
+        {layouts.length === 0 && folders.length === 0 ? (
+          <div style={{
+            padding: '32px 16px', textAlign: 'center',
+            color: 'var(--text-muted)', fontSize: 11,
+            border: '1px dashed var(--border)',
+            borderRadius: 'var(--r-lg)',
+            background: 'var(--bg-section)',
+          }}>
+            <Icon name="dashboard" size={32} style={{ color: 'var(--text-muted)', opacity: 0.5 }} />
+            <div style={{ marginTop: 8 }}>Noch keine Layouts.</div>
+            <div style={{ marginTop: 4, fontSize: 10 }}>
+              Oben <Icon name="add" size={11} /> klicken um ein neues Layout anzulegen.
+            </div>
+          </div>
+        ) : (
+          <div style={{ display: 'flex', flexDirection: 'column', gap: 6, marginBottom: 10 }}>
+            {/* Ordner-Gruppen */}
+            {folders.map(folderName => {
+              const items = grouped[folderName] || []
+              const isCollapsed = collapsedFolders.has(folderName)
+              const allChecked  = items.length > 0 && items.every(l => checked.has(l.id))
+              const isDropTarget = dragTarget === folderName
+              return (
+                <div key={folderName}
+                  onContextMenu={(ev) => {
+                    ev.preventDefault(); ev.stopPropagation()
+                    setCtxMenu({ x: ev.clientX, y: ev.clientY, kind: 'folder', id: folderName })
+                  }}
+                  onDragOver={handleDragOver(folderName)}
+                  onDragLeave={handleDragLeave()}
+                  onDrop={handleDrop(folderName)}
+                  style={{
+                    border: `1px solid ${isDropTarget ? 'var(--accent-border)' : 'var(--border)'}`,
+                    borderRadius: 'var(--r-lg)',
+                    background: isDropTarget ? 'var(--accent-dim)' : 'var(--bg-section)',
+                    marginBottom: 8,
+                    padding: 8,
+                    transition: 'background 0.14s, border-color 0.14s',
+                  }}>
+                  <div
+                    onClick={() => toggleFolderCollapse(folderName)}
+                    style={{
+                      display: 'flex', alignItems: 'center', gap: 6,
+                      cursor: 'pointer', userSelect: 'none',
+                      padding: 2,
+                    }}
+                  >
+                    <input
+                      type="checkbox"
+                      checked={allChecked}
+                      onClick={(e) => e.stopPropagation()}
+                      onChange={() => checkAllInFolder(items)}
+                      title="Alle in diesem Ordner ankreuzen"
+                      style={{ margin: 0, flexShrink: 0 }}
+                    />
+                    <span style={{
+                      transform: isCollapsed ? 'rotate(-90deg)' : 'rotate(0deg)',
+                      transition: 'transform 0.2s cubic-bezier(0.4, 0, 0.2, 1)',
+                      color: 'var(--text-muted)', display: 'inline-flex',
+                    }}>
+                      <Icon name="arrow_drop_down" size={16} />
+                    </span>
+                    <Icon name="folder" size={14} style={{ color: 'var(--warn)' }} />
+                    <span style={{ flex: 1, fontSize: 11, fontWeight: 500,
+                                   color: 'var(--text-primary)' }}>
+                      {folderName}
+                    </span>
+                    <span className="chip" style={{ fontSize: 8 }}>{items.length}</span>
+                    <button
+                      className="btn-icon-sm"
+                      onClick={(ev) => {
+                        ev.stopPropagation()
+                        setCtxMenu({ x: ev.clientX, y: ev.clientY, kind: 'folder', id: folderName })
+                      }}
+                      title="Ordner-Aktionen"
+                    >
+                      <Icon name="more_vert" size={14} />
+                    </button>
+                  </div>
+                  {!isCollapsed && (
+                    <div style={{ marginTop: 6, display: 'flex', flexDirection: 'column' }}>
+                      {items.map(l => (
+                        <LayoutRow key={l.id} l={l}
+                          active={l.id === selectedId}
+                          checked={checked.has(l.id)}
+                          dragging={draggingId === l.id}
+                          forceEditName={renamingId === l.id}
+                          onEditDone={() => setRenamingId(null)}
+                          onCheck={() => toggleCheck(l.id)}
+                          onSelect={() => setSelectedId(l.id)}
+                          onActivate={() => activateLayout(l.id)}
+                          onRename={(n) => renameLayout(l.id, n)}
+                          onContextMenu={(ev) => {
+                            ev.preventDefault(); ev.stopPropagation()
+                            setSelectedId(l.id)
+                            setCtxMenu({ x: ev.clientX, y: ev.clientY, kind: 'layout', id: l.id })
+                          }}
+                          onMenuClick={(ev) => {
+                            setSelectedId(l.id)
+                            setCtxMenu({ x: ev.clientX, y: ev.clientY, kind: 'layout', id: l.id })
+                          }}
+                          onDragStart={(ev) => {
+                            ev.dataTransfer.setData('text/plain', l.id)
+                            ev.dataTransfer.effectAllowed = 'move'
+                            setDraggingId(l.id)
+                          }}
+                          onDragEnd={() => { setDraggingId(null); setDragTarget(null) }}
+                        />
+                      ))}
+                      {items.length === 0 && (
+                        <div style={{
+                          padding: '10px 6px', fontSize: 10, color: 'var(--text-muted)',
+                          textAlign: 'center', fontStyle: 'italic',
+                        }}>
+                          Leer — Layouts hier ablegen.
+                        </div>
+                      )}
+                    </div>
+                  )}
+                </div>
+              )
+            })}
+
+            {/* Root-Drop-Zone — auch wenn keine Root-Layouts existieren, damit
+                man ein Layout aus einem Ordner zurueck auf "kein Ordner"
+                ziehen kann. */}
+            <div
+              onDragOver={handleDragOver('')}
+              onDragLeave={handleDragLeave()}
+              onDrop={handleDrop('')}
+              style={{
+                display: 'flex', flexDirection: 'column', gap: 3,
+                padding: grouped.__root.length === 0 ? 8 : 0,
+                border: `1px ${dragTarget === '__root' ? 'solid var(--accent)' : 'dashed transparent'}`,
+                borderRadius: 'var(--r)',
+                background: dragTarget === '__root' ? 'var(--bg-item-active)' : 'transparent',
+                transition: 'all 0.1s',
+                minHeight: grouped.__root.length === 0 ? 32 : 0,
+              }}
+            >
+              {grouped.__root.map(l => (
+                <LayoutRow key={l.id} l={l}
+                  active={l.id === selectedId}
+                  checked={checked.has(l.id)}
+                  dragging={draggingId === l.id}
+                  forceEditName={renamingId === l.id}
+                  onEditDone={() => setRenamingId(null)}
+                  onCheck={() => toggleCheck(l.id)}
+                  onSelect={() => setSelectedId(l.id)}
+                  onActivate={() => activateLayout(l.id)}
+                  onRename={(n) => renameLayout(l.id, n)}
+                  onContextMenu={(ev) => {
+                    ev.preventDefault(); ev.stopPropagation()
+                    setSelectedId(l.id)
+                    setCtxMenu({ x: ev.clientX, y: ev.clientY, kind: 'layout', id: l.id })
+                  }}
+                  onMenuClick={(ev) => {
+                    setSelectedId(l.id)
+                    setCtxMenu({ x: ev.clientX, y: ev.clientY, kind: 'layout', id: l.id })
+                  }}
+                  onDragStart={(ev) => {
+                    ev.dataTransfer.setData('text/plain', l.id)
+                    ev.dataTransfer.effectAllowed = 'move'
+                    setDraggingId(l.id)
+                  }}
+                  onDragEnd={() => { setDraggingId(null); setDragTarget(null) }}
+                />
+              ))}
+              {grouped.__root.length === 0 && draggingId && (
+                <div style={{
+                  textAlign: 'center', color: 'var(--text-muted)',
+                  fontSize: 10, fontStyle: 'italic',
+                }}>
+                  Hier ablegen um aus Ordner zu entfernen
+                </div>
+              )}
+            </div>
+          </div>
+        )}
+
+        {/* Details des aktuell gewaehlten Layouts */}
+        {selected && (
+          <div style={cardStyle}>
+            <div style={{ display: 'flex', alignItems: 'center', marginBottom: 6 }}>
+              <span style={{ ...labelXs, flex: 1 }}>
+                Details · {selected.name}
+              </span>
+              <button
+                onClick={() => addDetail(selected.id, null)}
+                className="btn-icon-tonal"
+                title="Neues Detail (zentriert auf Seite)"
+                style={{ marginRight: 4 }}
+              >
+                <Icon name="add" size={13} />
+              </button>
+              <button
+                onClick={() => syncLayout(selected.id)}
+                className="btn-icon-tonal"
+                disabled={details.length === 0}
+                title="Alle Details mit ihren Ausschnitten neu synchronisieren"
+              >
+                <Icon name="sync" size={13} />
+              </button>
+            </div>
+
+            {details.length === 0 ? (
+              <div style={{
+                padding: '20px 12px', textAlign: 'center',
+                color: 'var(--text-muted)', fontSize: 11,
+                border: '1px dashed var(--border)',
+                borderRadius: 'var(--r)',
+                background: 'var(--bg-input)',
+              }}>
+                <Icon name="crop_landscape" size={24} style={{ color: 'var(--text-muted)', opacity: 0.5 }} />
+                <div style={{ marginTop: 6 }}>Keine Details auf diesem Layout.</div>
+                <div style={{ marginTop: 4, fontSize: 10 }}>
+                  Oben <Icon name="add" size={11} /> klicken um eines hinzuzufuegen.
+                </div>
+              </div>
+            ) : (
+              <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
+                {details.map((d, i) => (
+                  <div key={d.id} style={{
+                    display: 'flex', flexDirection: 'column', gap: 4,
+                    padding: '6px 8px',
+                    background: 'var(--bg-input)',
+                    border: '1px solid var(--border-light)',
+                    borderRadius: 'var(--r)',
+                  }}>
+                    <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+                      <span className="chip" style={{ flexShrink: 0 }}>#{i + 1}</span>
+                      <span style={{
+                        flex: 1, fontWeight: 500,
+                        overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+                      }}>
+                        {d.name || '(Detail)'}
+                      </span>
+                      <span style={{ fontSize: 10, color: 'var(--text-muted)', fontFamily: 'DM Mono, monospace' }}>
+                        {Math.round(d.width)}×{Math.round(d.height)}
+                      </span>
+                      <button
+                        className="btn-icon-sm btn-icon-danger"
+                        onClick={() => {
+                          if (window.confirm('Detail loeschen?')) deleteDetail(selected.id, d.id)
+                        }}
+                        title="Detail loeschen"
+                      >
+                        <Icon name="delete" size={12} />
+                      </button>
+                    </div>
+                    <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+                      <select
+                        value={d.boundAusschnitt || ''}
+                        onChange={(e) => bindAusschnitt(selected.id, d.id, e.target.value || null)}
+                        style={{ flex: 1, fontSize: 11 }}
+                        title="Welcher Ausschnitt auf diesem Detail liegt"
+                      >
+                        <option value="">— kein Ausschnitt —</option>
+                        {snaps.map(s => (
+                          <option key={s.id} value={s.id}>
+                            {s.name}{s.folder ? ` · ${s.folder}` : ''}{s.scale ? ` · ${s.scale}` : ''}
+                          </option>
+                        ))}
+                      </select>
+                      <button
+                        onClick={() => syncDetail(selected.id, d.id)}
+                        disabled={!d.boundAusschnitt}
+                        className="btn-icon-sm"
+                        title="Gebundenen Ausschnitt neu anwenden"
+                      >
+                        <Icon name="sync" size={12} />
+                      </button>
+                    </div>
+                  </div>
+                ))}
+              </div>
+            )}
+          </div>
+        )}
+      </div>
+
+      {/* Kontextmenue */}
+      {ctxMenu && (
+        <ContextMenu
+          x={ctxMenu.x}
+          y={ctxMenu.y}
+          items={
+            ctxMenu.kind === 'folder'
+              ? folderCtxItems(ctxMenu.id)
+              : (() => {
+                  const l = layouts.find(x => x.id === ctxMenu.id)
+                  return l ? layoutCtxItems(l) : []
+                })()
+          }
+          onClose={() => setCtxMenu(null)}
+        />
+      )}
+
+      {/* Layout-Dialog: New oder Edit (Papierformat aendern) */}
+      {dialog && (
+        <LayoutDialog
+          mode={dialog.mode}
+          layout={dialog.layout}
+          onCancel={() => setDialog(null)}
+          onSubmit={(p) => {
+            if (dialog.mode === 'new') {
+              newLayout(p.name, p.format, p.landscape, p.customWidth, p.customHeight)
+            } else {
+              setPageSize(dialog.layout.id, p.format, p.landscape, p.customWidth, p.customHeight)
+            }
+            setDialog(null)
+          }}
+        />
+      )}
+    </div>
+  )
+}
+
+function LayoutDialog({ mode, layout, onCancel, onSubmit }) {
+  const editing = mode === 'edit'
+  const [name, setName] = useState('')
+  const [format, setFormat] = useState('A3')
+  const [landscape, setLandscape] = useState(true)
+  const [cw, setCw] = useState('420')   // mm
+  const [ch, setCh] = useState('297')   // mm
+
+  // Wenn editieren: aktuelle Layout-Groesse pre-fillen (custom-Mode default)
+  useEffect(() => {
+    if (editing && layout) {
+      // BBox in Doc-Einheiten — wir kennen die Einheit nicht direkt im
+      // Frontend. Fuer den Edit-Modus zeigen wir die Groesse als Zahlen an
+      // und schicken sie als "custom" mit der mm-Annahme. Wenn das Doc nicht
+      // auf mm steht, ergibt sich eine kleine Konvertier-Unschaerfe — das
+      // Backend rechnet mm-Werte konsistent in Doc-Units um.
+      setFormat('custom')
+      setCw(String(Math.round(layout.width)))
+      setCh(String(Math.round(layout.height)))
+    }
+  }, [editing, layout])
+
+  return (
+    <div style={{
+      position: 'fixed', inset: 0,
+      background: 'rgba(0,0,0,0.55)',
+      display: 'flex', alignItems: 'center', justifyContent: 'center',
+      zIndex: 100,
+    }} onClick={(e) => { if (e.target === e.currentTarget) onCancel() }}>
+      <div style={{
+        width: 340, background: 'var(--bg-base)',
+        border: '1px solid var(--border)', borderRadius: 'var(--r-lg)',
+        display: 'flex', flexDirection: 'column', overflow: 'hidden',
+      }}>
+        <div style={{ padding: '10px 12px', borderBottom: '1px solid var(--border)',
+                      fontWeight: 600 }}>
+          {editing ? `Papierformat: ${layout?.name}` : 'Neues Layout'}
+        </div>
+        <div style={{ padding: 12, display: 'flex', flexDirection: 'column', gap: 10 }}>
+          {!editing && (
+            <div>
+              <div style={labelXs}>Name</div>
+              <input type="text" value={name} onChange={(e) => setName(e.target.value)}
+                     placeholder="z.B. Grundriss EG"
+                     autoFocus
+                     style={{ width: '100%', marginTop: 4 }} />
+            </div>
+          )}
+          <div>
+            <div style={labelXs}>Papierformat</div>
+            <div style={{ display: 'flex', gap: 4, marginTop: 4, flexWrap: 'wrap' }}>
+              {PAPER_SIZES.map(f => (
+                <button key={f}
+                  onClick={() => setFormat(f)}
+                  className={format === f ? 'btn-contained' : 'btn-outlined'}
+                  style={{ padding: '4px 10px', fontSize: 11 }}>
+                  {f}
+                </button>
+              ))}
+              <button
+                onClick={() => setFormat('custom')}
+                className={format === 'custom' ? 'btn-contained' : 'btn-outlined'}
+                style={{ padding: '4px 10px', fontSize: 11 }}>
+                Eigene
+              </button>
+            </div>
+          </div>
+          {format === 'custom' ? (
+            <div>
+              <div style={labelXs}>Eigene Groesse (mm)</div>
+              <div style={{ display: 'flex', gap: 6, marginTop: 4, alignItems: 'center' }}>
+                <input type="text" value={cw} onChange={(e) => setCw(e.target.value)}
+                       placeholder="Breite"
+                       style={{ flex: 1, fontFamily: 'DM Mono, monospace', fontSize: 11 }} />
+                <span style={{ color: 'var(--text-muted)', fontSize: 10 }}>×</span>
+                <input type="text" value={ch} onChange={(e) => setCh(e.target.value)}
+                       placeholder="Hoehe"
+                       style={{ flex: 1, fontFamily: 'DM Mono, monospace', fontSize: 11 }} />
+                <span style={{ color: 'var(--text-muted)', fontSize: 10 }}>mm</span>
+              </div>
+            </div>
+          ) : (
+            <div>
+              <div style={labelXs}>Ausrichtung</div>
+              <div style={{ display: 'flex', gap: 4, marginTop: 4 }}>
+                <button
+                  onClick={() => setLandscape(true)}
+                  className={landscape ? 'btn-contained' : 'btn-outlined'}
+                  style={{ padding: '4px 10px', fontSize: 11, display: 'flex', gap: 4, alignItems: 'center' }}>
+                  <Icon name="crop_landscape" size={12} /> Quer
+                </button>
+                <button
+                  onClick={() => setLandscape(false)}
+                  className={!landscape ? 'btn-contained' : 'btn-outlined'}
+                  style={{ padding: '4px 10px', fontSize: 11, display: 'flex', gap: 4, alignItems: 'center' }}>
+                  <Icon name="crop_portrait" size={12} /> Hoch
+                </button>
+              </div>
+            </div>
+          )}
+        </div>
+        <div style={{ padding: 10, borderTop: '1px solid var(--border)',
+                      display: 'flex', justifyContent: 'flex-end', gap: 6 }}>
+          <button onClick={onCancel}>Abbrechen</button>
+          <button className="btn-contained"
+                  onClick={() => {
+                    const payload = { name: name.trim(), format, landscape }
+                    if (format === 'custom') {
+                      const w = parseFloat(cw), h = parseFloat(ch)
+                      if (!(w > 0) || !(h > 0)) { alert('Bitte gueltige Groesse eingeben.'); return }
+                      payload.customWidth  = w
+                      payload.customHeight = h
+                    }
+                    onSubmit(payload)
+                  }}>
+            {editing ? 'Anwenden' : 'Erstellen'}
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+function LayoutRow({ l, active, checked, dragging, forceEditName,
+                     onCheck, onSelect, onActivate, onRename,
+                     onContextMenu, onMenuClick,
+                     onDragStart, onDragEnd, onEditDone }) {
+  const landscape = (l.widthMm || l.width) >= (l.heightMm || l.height)
+  return (
+    <div
+      draggable
+      onDragStart={onDragStart}
+      onDragEnd={onDragEnd}
+      onClick={onSelect}
+      onDoubleClick={onActivate}
+      onContextMenu={onContextMenu}
+      style={{
+        display: 'flex', alignItems: 'center', gap: 8,
+        padding: '6px 8px',
+        border: '1px solid ' + (active ? 'var(--accent)' : 'var(--border-light)'),
+        borderRadius: 'var(--r)',
+        background: active ? 'var(--bg-item-active)' : 'var(--bg-input)',
+        cursor: 'grab',
+        userSelect: 'none',
+        marginBottom: 4,
+        opacity: dragging ? 0.4 : 1,
+        transition: 'background 0.14s, border-color 0.14s, opacity 0.14s',
+      }}
+      onMouseEnter={(ev) => { if (!active && !dragging) ev.currentTarget.style.background = 'var(--bg-item-hover)' }}
+      onMouseLeave={(ev) => { if (!active && !dragging) ev.currentTarget.style.background = 'var(--bg-input)' }}
+    >
+      <input
+        type="checkbox"
+        checked={checked}
+        onClick={(e) => e.stopPropagation()}
+        onChange={onCheck}
+        style={{ margin: 0, flexShrink: 0 }}
+        title="Fuer PDF-Export ankreuzen"
+      />
+      <OrientationBadge landscape={landscape} />
+      <EditableName
+        value={l.name}
+        onCommit={onRename}
+        forceEdit={forceEditName}
+        onEditDone={onEditDone}
+        style={{
+          flex: 1, minWidth: 0,
+          color: 'var(--text-primary)', fontWeight: 500,
+          overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+        }}
+      />
+      <span className="chip chip-accent" style={{
+        fontSize: 9, fontFamily: 'DM Mono, monospace', fontWeight: 600,
+        flexShrink: 0,
+      }} title={`${Math.round(l.widthMm || 0)}×${Math.round(l.heightMm || 0)} mm`}>
+        {formatLabel(l.widthMm, l.heightMm)}
+      </span>
+      <button
+        className="btn-icon-sm"
+        onClick={(ev) => { ev.stopPropagation(); onMenuClick(ev) }}
+        title="Aktionen"
+      >
+        <Icon name="more_vert" size={14} />
+      </button>
+    </div>
+  )
+}
diff --git a/src/MassstabApp.jsx b/src/MassstabApp.jsx
new file mode 100644
index 0000000..57483bb
--- /dev/null
+++ b/src/MassstabApp.jsx
@@ -0,0 +1,296 @@
+import { useState, useEffect, useRef } from 'react'
+import Icon from './components/Icon'
+import {
+  onMessage, notifyReady,
+  requestMassstab, setMassstab,
+  zoomOneToOne, zoomExtents, zoomSelection,
+  setMassstabDpi, detectMassstabDpi, setShowLineweights,
+} from './lib/rhinoBridge'
+
+const PRESETS = [
+  { value: 1,    label: '1:1'   },
+  { value: 5,    label: '1:5'   },
+  { value: 10,   label: '1:10'  },
+  { value: 20,   label: '1:20'  },
+  { value: 25,   label: '1:25'  },
+  { value: 50,   label: '1:50'  },
+  { value: 100,  label: '1:100' },
+  { value: 200,  label: '1:200' },
+  { value: 500,  label: '1:500' },
+  { value: 1000, label: '1:1000'},
+]
+
+function fmtScale(s) {
+  if (s == null) return '—'
+  if (s >= 1)   return '1:' + (s >= 10 ? s.toFixed(0) : s.toFixed(1))
+  return (1 / s).toFixed(2) + ':1'
+}
+
+function snapToPreset(s, tol = 0.03) {
+  if (s == null) return null
+  for (const p of PRESETS) {
+    if (Math.abs(s - p.value) / p.value <= tol) return p.value
+  }
+  return null
+}
+
+function parseScale(input) {
+  if (!input) return null
+  const s = String(input).trim()
+  for (const sep of [':', '=', '/']) {
+    if (s.includes(sep)) {
+      const [a, b] = s.split(sep, 2)
+      const pa = parseFloat(a)
+      const pb = parseFloat(b)
+      if (pa > 0 && pb > 0) return pb / pa
+      return null
+    }
+  }
+  const n = parseFloat(s)
+  return n > 0 ? n : null
+}
+
+// ---------------------------------------------------------------------------
+
+export default function MassstabApp() {
+  const [state, setState] = useState({
+    viewName: null, parallel: false, scale: null,
+    pixelWidth: null, pixelHeight: null, unitSystem: '?',
+    dpi: 96, dpiSource: 'default',
+    showLineweights: false,
+  })
+  const [appliedScale, setAppliedScale] = useState(null)
+  const appliedScaleRef = useRef(null)
+  const [draft, setDraft] = useState('')
+  const [dpiOpen, setDpiOpen] = useState(false)
+  const [dpiDraft, setDpiDraft] = useState('96')
+
+  useEffect(() => {
+    onMessage('STATE', (s) => {
+      setState((prev) => ({ ...prev, ...s }))
+      // Backend appliedScale (gilt nur fuer aktuellen Viewport) > Live-Snap > roher Live-Wert
+      let next = null
+      if (typeof s?.appliedScale === 'number' && s.appliedScale > 0) {
+        next = s.appliedScale
+      } else if (s?.parallel && typeof s?.scale === 'number' && s.scale > 0) {
+        const snap = snapToPreset(s.scale)
+        next = snap != null ? snap : Math.round(s.scale * 10) / 10
+      }
+      if (next != null && next > 0 && next !== appliedScaleRef.current) {
+        setAppliedScale(next)
+        appliedScaleRef.current = next
+      }
+    })
+    notifyReady()
+    setTimeout(() => requestMassstab(), 50)
+  }, [])
+
+  const isPerspective = state.parallel === false
+  const scaleVal = state.scale
+  const dropdownValue = appliedScale != null ? String(appliedScale) : '__none__'
+
+  const applyDropdown = (val) => {
+    if (val === '__none__') return
+    const r = parseFloat(val)
+    if (r > 0) {
+      setAppliedScale(r)
+      appliedScaleRef.current = r
+      setMassstab(r)
+    }
+  }
+
+  const applyDraft = () => {
+    const r = parseScale(draft)
+    if (r != null) {
+      setAppliedScale(r)
+      appliedScaleRef.current = r
+      setMassstab(r)
+      setDraft('')
+    }
+  }
+
+  const commitDpi = () => {
+    const v = parseFloat(dpiDraft)
+    if (v >= 30 && v <= 600) setMassstabDpi(v)
+    setDpiOpen(false)
+  }
+
+  // "100%" = Viewport-Zoom auf den aktuell eingestellten Massstab snappen
+  // (nicht: Massstab auf 1:1 setzen). Praktisch nach Pan/Zoom, um wieder
+  // zur Soll-Skala zu kommen.
+  const apply100 = () => {
+    if (appliedScale && appliedScale > 0) {
+      setMassstab(appliedScale)
+    }
+  }
+
+  // --- Style-Bausteine ------------------------------------------------------
+  const cellBtn = {
+    fontSize: 11, padding: '0 8px', height: 24,
+    display: 'inline-flex', alignItems: 'center', justifyContent: 'center', gap: 4,
+    background: 'var(--bg-item)', border: '1px solid var(--border)',
+    borderRadius: 'var(--r)', color: 'var(--text-primary)', cursor: 'pointer',
+    whiteSpace: 'nowrap',
+  }
+  const cellInput = {
+    fontSize: 11, padding: '0 6px', height: 24, minWidth: 0,
+    background: 'var(--bg-input)', border: '1px solid var(--border)',
+    borderRadius: 'var(--r)', color: 'var(--text-primary)',
+  }
+
+  return (
+    <div style={{
+      width: '100%', height: '100%',
+      display: 'flex', alignItems: 'center', gap: 6,
+      padding: '4px 8px',
+      fontFamily: 'var(--font)', color: 'var(--text-primary)',
+      background: 'var(--bg-base)',
+      borderTop: '1px solid var(--border)',
+      boxSizing: 'border-box',
+      overflow: 'hidden',
+    }}>
+      {/* Live-Zoom Anzeige */}
+      <div style={{
+        fontSize: 13, fontWeight: 600,
+        fontFamily: 'DM Mono, monospace',
+        minWidth: 56, textAlign: 'right',
+        color: isPerspective ? 'var(--text-muted)' : 'var(--text-primary)',
+      }} title={isPerspective ? 'Perspective — kein Massstab'
+                              : `Aktueller Zoom (live)${appliedScale!=null ? ` · gesetzt 1:${appliedScale}` : ''}`}>
+        {isPerspective ? '—' : fmtScale(scaleVal)}
+      </div>
+
+      <div style={{ width: 1, height: 18, background: 'var(--border)' }} />
+
+      {/* Skala-Dropdown */}
+      <select
+        disabled={isPerspective}
+        value={dropdownValue}
+        onChange={(e) => applyDropdown(e.target.value)}
+        style={{ ...cellInput, width: 80 }}
+        title="Massstab waehlen"
+      >
+        <option value="__none__">1:?</option>
+        {PRESETS.map(p => (
+          <option key={p.value} value={String(p.value)}>{p.label}</option>
+        ))}
+        {appliedScale != null && !PRESETS.some(p => p.value === appliedScale) && (
+          <option value={String(appliedScale)}>1:{appliedScale}</option>
+        )}
+      </select>
+
+      {/* Freitext */}
+      <input
+        disabled={isPerspective}
+        type="text"
+        placeholder="1:N"
+        value={draft}
+        onChange={(e) => setDraft(e.target.value)}
+        onKeyDown={(e) => { if (e.key === 'Enter') applyDraft() }}
+        onBlur={() => { if (draft) applyDraft() }}
+        style={{ ...cellInput, width: 64 }}
+        title="Eigenen Massstab eingeben (Enter)"
+      />
+
+      <div style={{ width: 1, height: 18, background: 'var(--border)' }} />
+
+      {/* Aktions-Buttons */}
+      <button
+        disabled={isPerspective || !appliedScale}
+        onClick={apply100}
+        style={cellBtn}
+        title={appliedScale
+          ? `Zoom auf eingestellten Massstab snappen (1:${appliedScale >= 10 ? Math.round(appliedScale) : appliedScale})`
+          : 'Erst einen Massstab waehlen'}
+      >100%</button>
+      <button onClick={zoomExtents} style={cellBtn} title="Auf gesamten Inhalt zoomen">
+        <Icon name="fit_screen" size={14} />
+      </button>
+      <button onClick={zoomSelection} style={cellBtn} title="Auf Selektion zoomen">
+        <Icon name="center_focus_strong" size={14} />
+      </button>
+
+      <div style={{ width: 1, height: 18, background: 'var(--border)' }} />
+
+      {/* Print-View / Strichstaerken-Toggle
+          Beide Icons werden permanent gerendert; nur display: none togglet,
+          damit die Font-Ligatur nicht neu aufgeloest wird (sonst Flackern). */}
+      <button
+        onClick={() => setShowLineweights(!state.showLineweights)}
+        style={{
+          ...cellBtn,
+          background: state.showLineweights ? 'var(--accent)' : 'var(--bg-item)',
+          color:      state.showLineweights ? '#fff' : 'var(--text-primary)',
+          borderColor: state.showLineweights ? 'var(--accent)' : 'var(--border)',
+        }}
+        title={state.showLineweights
+          ? 'Strichstaerken werden angezeigt (Print-View) — klicken zum Ausschalten'
+          : 'Strichstaerken als Hairlines (Edit-View) — klicken um Print-View zu zeigen'}
+      >
+        <Icon name="edit"  size={14} style={{ display: state.showLineweights ? 'none' : 'inline-block' }} />
+        <Icon name="print" size={14} style={{ display: state.showLineweights ? 'inline-block' : 'none' }} />
+        <span style={{ fontSize: 10 }}>{state.showLineweights ? 'Print' : 'Edit'}</span>
+      </button>
+
+      {/* Spacer */}
+      <div style={{ flex: 1 }} />
+
+      {/* View-Name */}
+      <div style={{
+        fontSize: 10, color: 'var(--text-muted)',
+        whiteSpace: 'nowrap', overflow: 'hidden', textOverflow: 'ellipsis',
+        maxWidth: 140,
+      }} title={state.viewName || ''}>
+        {state.viewName || '?'}{isPerspective ? ' · Persp.' : ''}
+      </div>
+
+      {/* DPI-Popover */}
+      <div style={{ position: 'relative' }}>
+        <button
+          onClick={() => { setDpiDraft(String(state.dpi || 96)); setDpiOpen(o => !o) }}
+          style={{ ...cellBtn, fontSize: 10, padding: '0 6px', height: 22,
+                   color: state.dpiSource === 'auto'    ? 'var(--accent)'
+                        : state.dpiSource === 'manual'  ? 'var(--text-primary)'
+                        : 'var(--text-muted)' }}
+          title={`DPI Kalibrierung — aktuell ${Math.round(state.dpi || 96)} dpi (${state.dpiSource || 'default'})`}
+        >
+          {Math.round(state.dpi || 96)}dpi
+          {state.dpiSource === 'auto' && (
+            <span style={{ marginLeft: 3, fontSize: 8, opacity: 0.8 }}>auto</span>
+          )}
+        </button>
+        {dpiOpen && (
+          <div style={{
+            position: 'absolute', right: 0, bottom: '100%', marginBottom: 4,
+            background: 'var(--bg-panel)', border: '1px solid var(--border)',
+            borderRadius: 'var(--r)', padding: 8, display: 'flex',
+            flexDirection: 'column', gap: 6,
+            boxShadow: '0 4px 12px rgba(0,0,0,0.15)', zIndex: 10, minWidth: 220,
+          }}>
+            <div style={{ fontSize: 10, color: 'var(--text-muted)' }}>
+              Bildschirm-Aufloesung fuer Massstab-Berechnung
+            </div>
+            <div style={{ display: 'flex', gap: 4, alignItems: 'center' }}>
+              <input
+                type="number" min={30} max={600}
+                value={dpiDraft}
+                onChange={(e) => setDpiDraft(e.target.value)}
+                onKeyDown={(e) => { if (e.key === 'Enter') commitDpi() }}
+                autoFocus
+                style={{ ...cellInput, flex: 1 }}
+              />
+              <button onClick={commitDpi} style={{ ...cellBtn, fontSize: 10 }}>OK</button>
+            </div>
+            <button
+              onClick={() => { detectMassstabDpi(); setDpiOpen(false) }}
+              style={{ ...cellBtn, fontSize: 10, justifyContent: 'flex-start' }}
+              title="DPI automatisch ueber EDID des Bildschirms ermitteln"
+            >
+              <Icon name="auto_fix_high" size={12} /> Auto-Detect (EDID)
+            </button>
+          </div>
+        )}
+      </div>
+    </div>
+  )
+}
diff --git a/src/OberleisteApp.jsx b/src/OberleisteApp.jsx
new file mode 100644
index 0000000..a2c23e4
--- /dev/null
+++ b/src/OberleisteApp.jsx
@@ -0,0 +1,369 @@
+import { useState, useEffect, useRef } from 'react'
+import Icon from './components/Icon'
+import {
+  onMessage, notifyReady,
+  requestMassstab, setMassstab,
+  zoomExtents, zoomSelection, setShowLineweights,
+  setMassstabDpi, detectMassstabDpi,
+  setView, setDisplayMode,
+  toggleOverrides, setOverridesPreset, openOverridesPanel,
+} from './lib/rhinoBridge'
+
+const PRESETS = [
+  { value: 1, label: '1:1' }, { value: 5, label: '1:5' },
+  { value: 10, label: '1:10' }, { value: 20, label: '1:20' },
+  { value: 25, label: '1:25' }, { value: 50, label: '1:50' },
+  { value: 100, label: '1:100' }, { value: 200, label: '1:200' },
+  { value: 500, label: '1:500' }, { value: 1000, label: '1:1000' },
+]
+
+const VIEWS = [
+  { value: 'Top',         icon: 'north',          label: 'Top' },
+  { value: 'Front',       icon: 'view_in_ar',     label: 'Front' },
+  { value: 'Right',       icon: 'east',           label: 'Right' },
+  { value: 'Perspective', icon: 'view_quilt',     label: 'Persp' },
+]
+
+function fmtScale(s) {
+  if (s == null) return '—'
+  if (s >= 1) return '1:' + (s >= 10 ? s.toFixed(0) : s.toFixed(1))
+  return (1 / s).toFixed(2) + ':1'
+}
+
+function snapToPreset(s, tol = 0.03) {
+  if (s == null) return null
+  for (const p of PRESETS) {
+    if (Math.abs(s - p.value) / p.value <= tol) return p.value
+  }
+  return null
+}
+
+function parseScale(input) {
+  if (!input) return null
+  const s = String(input).trim()
+  for (const sep of [':', '=', '/']) {
+    if (s.includes(sep)) {
+      const [a, b] = s.split(sep, 2)
+      const pa = parseFloat(a), pb = parseFloat(b)
+      if (pa > 0 && pb > 0) return pb / pa
+      return null
+    }
+  }
+  const n = parseFloat(s)
+  return n > 0 ? n : null
+}
+
+// ---------------------------------------------------------------------------
+// Material-UI-Style: alle Pills auf einheitliche Hoehe (PILL_H)
+// nutzt globale Klassen aus index.css fuer Look (border-radius, colors)
+
+const PILL_H = 20  // Einheits-Hoehe fuer alle Bar-Elemente
+
+const sep = {
+  width: 1, height: 18,
+  background: 'var(--border)', flexShrink: 0,
+  margin: '0 2px',
+}
+const groupLabel = {
+  fontSize: 9, color: 'var(--text-muted)', textTransform: 'uppercase',
+  letterSpacing: '0.08em', fontWeight: 600,
+  alignSelf: 'center', whiteSpace: 'nowrap',
+  padding: '0 4px',
+}
+const pillSelect = {
+  height: PILL_H, lineHeight: PILL_H + 'px',
+  padding: '0 20px 0 10px', boxSizing: 'border-box',
+  fontSize: 10,
+}
+const pillInput = {
+  height: PILL_H, lineHeight: PILL_H + 'px',
+  padding: '0 8px', boxSizing: 'border-box',
+  borderRadius: 999,
+  fontSize: 10,
+}
+const pillChip = {
+  height: PILL_H, lineHeight: PILL_H + 'px',
+  padding: '0 8px', boxSizing: 'border-box',
+  display: 'inline-flex', alignItems: 'center',
+  fontSize: 9,
+}
+const pillIconBtn = {
+  width: PILL_H, height: PILL_H,
+  borderRadius: '50%', boxSizing: 'border-box',
+}
+
+// Tonal button helper (filled when active, outlined when not)
+function ToolButton({ active, onClick, icon, label, title, disabled }) {
+  return (
+    <button
+      onClick={onClick}
+      disabled={disabled}
+      className={active ? 'btn-contained' : 'btn-outlined'}
+      style={{ height: PILL_H, padding: '0 8px', boxSizing: 'border-box',
+               fontSize: 9,
+               opacity: disabled ? 0.4 : 1,
+               cursor: disabled ? 'not-allowed' : 'pointer' }}
+      title={title}
+    >
+      {icon && <Icon name={icon} size={12} />}
+      {label && <span style={{ fontSize: 9 }}>{label}</span>}
+    </button>
+  )
+}
+
+// ---------------------------------------------------------------------------
+
+export default function OberleisteApp() {
+  const [state, setState] = useState({
+    viewName: null, parallel: false, scale: null,
+    pixelWidth: null, pixelHeight: null, unitSystem: '?',
+    dpi: 96, dpiSource: 'default',
+    showLineweights: false,
+    viewMode: null, displayMode: null, displayModes: [],
+    ortho: false, gridSnap: false, osnap: false,
+    overridesEnabled: false, overridesCount: 0,
+    cmdPrompt: '', cmdOptions: [],
+    overridesActivePreset: null, overridesPresets: [],
+  })
+  const [appliedScale, setAppliedScale] = useState(null)
+  const appliedScaleRef = useRef(null)
+  const [draft, setDraft] = useState('')
+  const [customMode, setCustomMode] = useState(false)  // Dropdown -> Custom-Input switch
+  const customInputRef = useRef(null)
+
+  useEffect(() => {
+    onMessage('STATE', (s) => {
+      setState((prev) => ({ ...prev, ...s }))
+      // Dropdown spiegelt EXAKT den Backend-appliedScale fuer den aktuellen
+      // Viewport. Kein Live-Skala-Fallback — das Dropdown ist statisch und
+      // pro Viewport gebunden. Backend gibt null zurueck wenn der aktive
+      // Viewport noch keinen gesetzten Massstab hat → Dropdown zeigt "1:?".
+      const next = (typeof s?.appliedScale === 'number' && s.appliedScale > 0)
+        ? s.appliedScale
+        : null
+      if (next !== appliedScaleRef.current) {
+        setAppliedScale(next)
+        appliedScaleRef.current = next
+      }
+    })
+    notifyReady()
+    setTimeout(() => requestMassstab(), 50)
+  }, [])
+
+  const isPerspective = state.parallel === false
+  const scaleVal = state.scale
+  const dropdownValue = appliedScale != null ? String(appliedScale) : '__none__'
+
+  const applyDropdown = (val) => {
+    if (val === '__none__') return
+    if (val === '__custom__') {
+      setDraft(appliedScale ? `1:${appliedScale}` : '')
+      setCustomMode(true)
+      // Nach dem Render: Focus + Selektion fuer schnelles Eintippen.
+      setTimeout(() => {
+        customInputRef.current?.focus()
+        customInputRef.current?.select()
+      }, 0)
+      return
+    }
+    const r = parseFloat(val)
+    if (r > 0) { setAppliedScale(r); appliedScaleRef.current = r; setMassstab(r) }
+  }
+  const applyDraft = () => {
+    const r = parseScale(draft)
+    if (r != null) {
+      setAppliedScale(r); appliedScaleRef.current = r; setMassstab(r)
+    }
+    setDraft('')
+    setCustomMode(false)
+  }
+  const cancelDraft = () => { setDraft(''); setCustomMode(false) }
+  const apply100 = () => {
+    if (appliedScale && appliedScale > 0) setMassstab(appliedScale)
+  }
+
+  // Aktuelles View-Match (manche User haben "Top" / "Right" als view name)
+  const matchView = (v) => {
+    if (!state.viewName) return false
+    return state.viewName === v || state.viewName.toLowerCase() === v.toLowerCase()
+  }
+
+  // (Command-Bar wurde entfernt — Rhinos eigene Command-Line wird benutzt.)
+
+  return (
+    <div style={{
+      width: '100%', height: '100%',
+      display: 'flex', flexDirection: 'column',
+      fontFamily: 'var(--font)', color: 'var(--text-primary)',
+      background: 'var(--bg-panel)',
+      borderBottom: '1px solid var(--border)',
+      boxSizing: 'border-box',
+      overflow: 'hidden',
+    }}>
+    {/* === Toolbar (View, Display, Massstab, Snap, Overrides) === */}
+    <div style={{
+      display: 'flex', alignItems: 'center', gap: 8,
+      padding: '6px 12px',
+      overflowX: 'auto', overflowY: 'hidden',
+      flexShrink: 0,
+    }}>
+      <span
+        style={{
+          fontSize: 11, fontWeight: 600, letterSpacing: '0.08em',
+          color: 'var(--text-muted)',
+          fontFamily: 'DM Mono, monospace',
+          flexShrink: 0, userSelect: 'none',
+        }}
+        title={`Dossier ${__APP_VERSION__} — Teil von OpenStudio`}
+      >
+        DOSSIER <span style={{ opacity: 0.55 }}>{__APP_VERSION__}</span>
+      </span>
+      <div style={sep} />
+      {/* ====== GRUPPE: VIEW ====== */}
+      <span style={groupLabel}>View</span>
+      {VIEWS.map(v => (
+        <ToolButton
+          key={v.value}
+          onClick={() => setView(v.value)}
+          active={matchView(v.value)}
+          icon={v.icon}
+          label={v.label}
+          title={`Ansicht ${v.label}`}
+        />
+      ))}
+
+      <div style={sep} />
+
+      {/* ====== GRUPPE: DISPLAY-MODE ====== */}
+      <span style={groupLabel}>Display</span>
+      <select
+        value={state.displayMode || ''}
+        onChange={(e) => setDisplayMode(e.target.value)}
+        style={pillSelect}
+        title="Display-Mode (Wireframe / Shaded / Rendered / etc.)"
+      >
+        {!state.displayMode && <option value="">—</option>}
+        {(state.displayModes || []).map(dm => (
+          <option key={dm.id} value={dm.name}>{dm.name}</option>
+        ))}
+      </select>
+
+      <div style={sep} />
+
+      {/* ====== GRUPPE: MASSSTAB ====== */}
+      <span style={groupLabel}>Massstab</span>
+      <span
+        className={isPerspective ? 'chip' : 'chip chip-accent'}
+        style={{
+          ...pillChip,
+          minWidth: 56, justifyContent: 'center',
+          fontFamily: 'DM Mono, monospace', fontSize: 11, fontWeight: 600,
+        }}
+        title="Live-Zoom"
+      >
+        {/* Live-Zoom des Viewports — immer sichtbar bei Parallelprojektion,
+            unabhaengig davon ob ein Massstab im Dropdown gepinnt ist oder
+            nicht. Nur in Perspective ist die Anzeige nicht sinnvoll. */}
+        {isPerspective ? '—' : fmtScale(scaleVal)}
+      </span>
+      {customMode ? (
+        <input
+          ref={customInputRef}
+          disabled={isPerspective}
+          type="text" placeholder="1:N"
+          value={draft}
+          onChange={(e) => setDraft(e.target.value)}
+          onKeyDown={(e) => {
+            if (e.key === 'Enter') applyDraft()
+            else if (e.key === 'Escape') cancelDraft()
+          }}
+          onBlur={applyDraft}
+          style={{ ...pillInput, width: 92 }}
+          title="Massstab eingeben (Enter = uebernehmen, Esc = abbrechen)"
+        />
+      ) : (
+        <select
+          disabled={isPerspective}
+          value={dropdownValue}
+          onChange={(e) => applyDropdown(e.target.value)}
+          style={{ ...pillSelect, width: 92 }}
+        >
+          <option value="__none__">—</option>
+          {PRESETS.map(p => (
+            <option key={p.value} value={String(p.value)}>{p.label}</option>
+          ))}
+          {appliedScale != null && !PRESETS.some(p => p.value === appliedScale) && (
+            <option value={String(appliedScale)}>1:{appliedScale}</option>
+          )}
+          <option value="__custom__">Eigener…</option>
+        </select>
+      )}
+      <ToolButton
+        onClick={apply100}
+        disabled={isPerspective || !appliedScale}
+        label="100%"
+        title={appliedScale ? `Zoom auf eingestellten Massstab snappen (1:${appliedScale >= 10 ? Math.round(appliedScale) : appliedScale})` : 'Erst einen Massstab waehlen'}
+      />
+      <button className="btn-icon" onClick={zoomExtents}
+              style={pillIconBtn}
+              title="Auf gesamten Inhalt zoomen">
+        <Icon name="fit_screen" size={14} />
+      </button>
+      <button className="btn-icon" onClick={zoomSelection}
+              style={pillIconBtn}
+              title="Auf Selektion zoomen">
+        <Icon name="center_focus_strong" size={14} />
+      </button>
+      <ToolButton
+        onClick={() => setShowLineweights(!state.showLineweights)}
+        active={state.showLineweights}
+        label={state.showLineweights ? 'Print' : 'Edit'}
+        title={state.showLineweights ? 'Print-View aktiv — klick zum Ausschalten' : 'Strichstaerken anzeigen (Print-View)'}
+        icon={state.showLineweights ? 'print' : 'edit'}
+      />
+
+      <div style={sep} />
+
+      {/* Snap-Toggles (Ortho/Grid/OSnap) sind in Rhinos eigener Footer-Bar
+          schon vorhanden — hier rausgenommen um Doppelung zu vermeiden. */}
+
+      {/* ====== GRUPPE: OVERRIDES ====== */}
+      <span style={groupLabel}>Overrides</span>
+      <ToolButton
+        onClick={() => toggleOverrides(!state.overridesEnabled)}
+        active={state.overridesEnabled}
+        icon="auto_fix_high"
+        label={state.overridesEnabled ? 'AN' : 'AUS'}
+        title={state.overridesEnabled
+          ? `Grafische Overrides aktiv — klick zum Ausschalten`
+          : `Grafische Overrides ausgeschaltet`}
+      />
+      {/* Preset-Dropdown: aktive Kombination waehlen. "—" = keine Kombination
+          (Doc-Rules sind frei editiert oder leer). "Konfigurieren…" oeffnet
+          den grossen Regel-Editor (OVERRIDES-Panel). */}
+      <select
+        value={state.overridesActivePreset || '__none__'}
+        onChange={(e) => {
+          const v = e.target.value
+          if (v === '__configure__') { openOverridesPanel(); return }
+          setOverridesPreset(v === '__none__' ? null : v)
+        }}
+        style={{ ...pillSelect, width: 140 }}
+        title={state.overridesActivePreset
+          ? `Aktives Preset: ${state.overridesActivePreset} (${state.overridesCount} Regeln)`
+          : `Kein Preset aktiv (${state.overridesCount} Regeln, frei editiert)`}
+      >
+        <option value="__none__">{state.overridesCount > 0 ? `— (${state.overridesCount} Regeln)` : '—'}</option>
+        {(state.overridesPresets || []).map(name => (
+          <option key={name} value={name}>{name}</option>
+        ))}
+        <option disabled>──────────</option>
+        <option value="__configure__">Konfigurieren…</option>
+      </select>
+
+      {/* Spacer am rechten Rand */}
+      <div style={{ flex: 1 }} />
+    </div>
+    </div>
+  )
+}
diff --git a/src/OverridesApp.jsx b/src/OverridesApp.jsx
new file mode 100644
index 0000000..0126ad9
--- /dev/null
+++ b/src/OverridesApp.jsx
@@ -0,0 +1,601 @@
+import { useState, useEffect } from 'react'
+import Icon from './components/Icon'
+import ContextMenu from './components/ContextMenu'
+import {
+  onMessage, notifyReady,
+  setOverridesEnabled, addRule, updateRule, deleteRule,
+  reorderRules, duplicateRule, reapplyOverrides, clearOverrideRules,
+  savePreset, loadPreset, deletePreset,
+} from './lib/rhinoBridge'
+
+const COND_TYPES = [
+  { value: 'layer_name',  label: 'Layer-Name' },
+  { value: 'user_string', label: 'UserString' },
+  { value: 'object_name', label: 'Objekt-Name' },
+]
+
+const OPS = [
+  { value: 'equals',      label: '=' },
+  { value: 'not_equals',  label: '≠' },
+  { value: 'contains',    label: 'enthält' },
+  { value: 'starts_with', label: 'beginnt mit' },
+  { value: 'ends_with',   label: 'endet mit' },
+]
+
+const labelXs = {
+  fontSize: 9, color: 'var(--text-muted)',
+  textTransform: 'uppercase', letterSpacing: '0.06em',
+  fontWeight: 600,
+}
+
+// ---------------------------------------------------------------------------
+
+function ConditionLeaf({ cond, layers, onChange, onRemove, canRemove }) {
+  const t = cond?.type || 'layer_name'
+  const op = cond?.operator || 'equals'
+  return (
+    <div style={{
+      display: 'flex', flexDirection: 'column', gap: 6,
+      padding: 8,
+      border: '1px solid var(--border-light)', borderRadius: 'var(--r-lg)',
+      background: 'var(--bg-section)',
+    }}>
+      <div style={{ display: 'flex', gap: 6, alignItems: 'center' }}>
+        <select
+          value={t}
+          onChange={(e) => onChange({ ...cond, type: e.target.value })}
+          style={{ flex: 1, minWidth: 0 }}
+        >
+          {COND_TYPES.map(c => <option key={c.value} value={c.value}>{c.label}</option>)}
+        </select>
+        {canRemove && (
+          <button onClick={onRemove} className="btn-icon-danger"
+                  title="Diese Bedingung entfernen">
+            <Icon name="close" size={14} />
+          </button>
+        )}
+      </div>
+      {t === 'user_string' && (
+        <input
+          type="text" placeholder="Key"
+          value={cond?.key || ''}
+          onChange={(e) => onChange({ ...cond, key: e.target.value })}
+          style={{ width: '100%' }}
+        />
+      )}
+      <div style={{ display: 'flex', gap: 6, alignItems: 'center' }}>
+        <select
+          value={op}
+          onChange={(e) => onChange({ ...cond, operator: e.target.value })}
+          style={{ flexShrink: 0 }}
+        >
+          {OPS.map(o => <option key={o.value} value={o.value}>{o.label}</option>)}
+        </select>
+        {t === 'layer_name' ? (
+          <select
+            value={cond?.value || ''}
+            onChange={(e) => onChange({ ...cond, value: e.target.value })}
+            style={{ flex: 1, minWidth: 0 }}
+          >
+            <option value="">—</option>
+            {(layers || []).map(l => (
+              <option key={l.fullPath} value={l.fullPath}>{l.fullPath}</option>
+            ))}
+          </select>
+        ) : (
+          <input
+            type="text" placeholder="Wert"
+            value={cond?.value || ''}
+            onChange={(e) => onChange({ ...cond, value: e.target.value })}
+            style={{ flex: 1, minWidth: 0 }}
+          />
+        )}
+      </div>
+    </div>
+  )
+}
+
+function ConditionsEditor({ rule, layers, onChange }) {
+  const conds = rule.conditions && rule.conditions.length > 0
+    ? rule.conditions
+    : (rule.condition ? [rule.condition] : [{ type: 'layer_name', operator: 'equals', value: '' }])
+  const logic = (rule.conditionsLogic || 'and').toLowerCase()
+
+  const update = (i, newCond) => {
+    const next = conds.slice()
+    next[i] = newCond
+    onChange({ ...rule, conditions: next, condition: undefined })
+  }
+  const remove = (i) => {
+    const next = conds.slice()
+    next.splice(i, 1)
+    onChange({ ...rule, conditions: next.length ? next : [{ type: 'layer_name', operator: 'equals', value: '' }], condition: undefined })
+  }
+  const add = () => {
+    const next = conds.slice()
+    next.push({ type: 'layer_name', operator: 'equals', value: '' })
+    onChange({ ...rule, conditions: next, condition: undefined })
+  }
+  const setLogic = (l) => onChange({ ...rule, conditionsLogic: l })
+
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 6 }}>
+      {conds.length > 1 && (
+        <div style={{ display: 'flex', gap: 4, alignItems: 'center' }}>
+          <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>Logik:</span>
+          <button
+            onClick={() => setLogic('and')}
+            className={logic === 'and' ? 'btn-contained' : 'btn-outlined'}
+            title="Alle Bedingungen müssen zutreffen"
+          >AND</button>
+          <button
+            onClick={() => setLogic('or')}
+            className={logic === 'or' ? 'btn-contained' : 'btn-outlined'}
+            title="Mindestens eine Bedingung muss zutreffen"
+          >OR</button>
+        </div>
+      )}
+      {conds.map((c, i) => (
+        <ConditionLeaf
+          key={i}
+          cond={c}
+          layers={layers}
+          onChange={(nc) => update(i, nc)}
+          onRemove={() => remove(i)}
+          canRemove={conds.length > 1}
+        />
+      ))}
+      <button onClick={add} className="btn-outlined" style={{ alignSelf: 'flex-start' }}
+              title="Weitere Bedingung hinzufügen">
+        <Icon name="add" size={14} />
+        <span>Bedingung</span>
+      </button>
+    </div>
+  )
+}
+
+function ActionRow({ label, icon, active, onToggle, children }) {
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 4 }}>
+      <label style={{
+        display: 'flex', alignItems: 'center', gap: 8,
+        cursor: 'pointer', userSelect: 'none',
+      }}>
+        <input type="checkbox" checked={active} onChange={onToggle}
+               style={{ width: 'auto', height: 'auto', padding: 0 }} />
+        <Icon name={icon} size={14} style={{ color: 'var(--text-muted)' }} />
+        <span style={{ fontSize: 11, color: active ? 'var(--text-primary)' : 'var(--text-muted)' }}>
+          {label}
+        </span>
+      </label>
+      {active && (
+        <div style={{ marginLeft: 26, display: 'flex', gap: 6, alignItems: 'center' }}>
+          {children}
+        </div>
+      )}
+    </div>
+  )
+}
+
+function ActionsEditor({ actions, linetypes, hatchPatterns, onChange }) {
+  const a = actions || {}
+  const setProp = (key, val) => {
+    const next = { ...a }
+    if (val === '' || val === null || val === undefined) {
+      delete next[key]
+    } else {
+      next[key] = val
+    }
+    onChange(next)
+  }
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 10 }}>
+      <ActionRow
+        label="Farbe" icon="palette"
+        active={'color' in a}
+        onToggle={(e) => setProp('color', e.target.checked ? (a.color || '#888888') : '')}
+      >
+        <input
+          type="color"
+          value={a.color || '#888888'}
+          onChange={(e) => setProp('color', e.target.value)}
+          style={{ width: 36, height: 26, padding: 2, flexShrink: 0 }}
+        />
+        <input
+          type="text"
+          value={a.color || ''}
+          placeholder="#rrggbb"
+          onChange={(e) => setProp('color', e.target.value)}
+          style={{ flex: 1, minWidth: 0 }}
+        />
+      </ActionRow>
+
+      <ActionRow
+        label="Strichstärke" icon="line_weight"
+        active={'lineweight' in a}
+        onToggle={(e) => setProp('lineweight', e.target.checked ? (a.lineweight ?? 0.25) : '')}
+      >
+        <input
+          type="number" step={0.05} min={0}
+          value={a.lineweight ?? ''}
+          onChange={(e) => setProp('lineweight', parseFloat(e.target.value) || 0)}
+          style={{ width: 80 }}
+        />
+        <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>mm</span>
+      </ActionRow>
+
+      <ActionRow
+        label="Linientyp" icon="more_horiz"
+        active={'linetype' in a}
+        onToggle={(e) => setProp('linetype', e.target.checked ? (a.linetype || 'Continuous') : '')}
+      >
+        <select
+          value={a.linetype || ''}
+          onChange={(e) => setProp('linetype', e.target.value)}
+          style={{ flex: 1, minWidth: 0 }}
+        >
+          <option value="">—</option>
+          {(linetypes || []).map(lt => <option key={lt} value={lt}>{lt}</option>)}
+        </select>
+      </ActionRow>
+
+      <ActionRow
+        label="Schraffur" icon="grid_view"
+        active={'hatchPattern' in a}
+        onToggle={(e) => setProp('hatchPattern', e.target.checked ? (a.hatchPattern || 'Solid') : '')}
+      >
+        <select
+          value={a.hatchPattern || ''}
+          onChange={(e) => setProp('hatchPattern', e.target.value)}
+          style={{ flex: 1, minWidth: 0 }}
+        >
+          <option value="">—</option>
+          {(hatchPatterns || []).map(hp => <option key={hp} value={hp}>{hp}</option>)}
+        </select>
+      </ActionRow>
+
+      <ActionRow
+        label="Schraffur-Skala" icon="aspect_ratio"
+        active={'hatchScale' in a}
+        onToggle={(e) => setProp('hatchScale', e.target.checked ? (a.hatchScale ?? 1.0) : '')}
+      >
+        <input
+          type="number" step={0.1} min={0.001}
+          value={a.hatchScale ?? ''}
+          onChange={(e) => setProp('hatchScale', parseFloat(e.target.value) || 1.0)}
+          style={{ width: 80 }}
+        />
+      </ActionRow>
+
+      <div style={{ fontSize: 9, color: 'var(--text-muted)', fontStyle: 'italic', lineHeight: 1.4 }}>
+        Hatch-Override modifiziert nur existierende Schraffuren. Curves ohne Hatch bleiben unverändert.
+      </div>
+    </div>
+  )
+}
+
+function RuleCard({ rule, index, total, layers, linetypes, hatchPatterns, onPatch, onDelete, onDuplicate, onMoveUp, onMoveDown, onContextMenu }) {
+  const [open, setOpen] = useState(false)
+
+  const summarize = () => {
+    const conds = (rule.conditions && rule.conditions.length > 0)
+      ? rule.conditions
+      : (rule.condition ? [rule.condition] : [])
+    const logic = (rule.conditionsLogic || 'and').toUpperCase()
+    const a = rule.actions || {}
+    const parts = []
+    const condTexts = conds.map(c => {
+      if (c.type === 'layer_name')  return `Layer ${c.operator} "${c.value || '?'}"`
+      if (c.type === 'user_string') return `${c.key || '?'} ${c.operator} "${c.value || '?'}"`
+      if (c.type === 'object_name') return `Name ${c.operator} "${c.value || '?'}"`
+      return ''
+    }).filter(Boolean)
+    if (condTexts.length === 1) parts.push(condTexts[0])
+    else if (condTexts.length > 1) parts.push(condTexts.join(` ${logic} `))
+    const acts = Object.keys(a)
+    if (acts.length) parts.push('→ ' + acts.join(', '))
+    return parts.join('  ')
+  }
+
+  return (
+    <div
+      onContextMenu={(ev) => { if (onContextMenu) { ev.preventDefault(); onContextMenu(ev) } }}
+      style={{
+      border: '1px solid var(--border)', borderRadius: 'var(--r-lg)',
+      background: 'var(--bg-section)', padding: 8,
+      marginBottom: 8,
+      opacity: rule.enabled === false ? 0.5 : 1,
+    }}>
+      {/* Row 1: index + checkbox + name + edit-toggle */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <span className="chip" style={{ flexShrink: 0 }}>#{index + 1}</span>
+        <input
+          type="checkbox"
+          checked={rule.enabled !== false}
+          onChange={(e) => onPatch({ ...rule, enabled: e.target.checked })}
+          title="Regel aktiv"
+          style={{ flexShrink: 0, width: 'auto', height: 'auto', padding: 0 }}
+        />
+        <input
+          type="text"
+          value={rule.name || ''}
+          placeholder="Regel-Name"
+          onChange={(e) => onPatch({ ...rule, name: e.target.value })}
+          style={{ flex: 1, minWidth: 0 }}
+        />
+        <button onClick={() => setOpen(!open)} className="btn-icon"
+                title={open ? 'Einklappen' : 'Bearbeiten'}>
+          <Icon name={open ? 'expand_less' : 'edit'} size={14} />
+        </button>
+      </div>
+
+      {!open && (
+        <div style={{ fontSize: 10, color: 'var(--text-muted)', marginTop: 6, marginLeft: 4,
+                      overflowWrap: 'break-word', wordBreak: 'break-word' }}>
+          {summarize() || '(leer)'}
+        </div>
+      )}
+
+      {open && (
+        <>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 2, marginTop: 8 }}>
+            <button onClick={() => onMoveUp()} disabled={index === 0}
+                    className="btn-icon-sm" title="Prio höher (nach oben)">
+              <Icon name="arrow_upward" size={14} />
+            </button>
+            <button onClick={() => onMoveDown()} disabled={index === total - 1}
+                    className="btn-icon-sm" title="Prio tiefer (nach unten)">
+              <Icon name="arrow_downward" size={14} />
+            </button>
+            <button onClick={() => onDuplicate()} className="btn-icon-sm" title="Duplizieren">
+              <Icon name="content_copy" size={14} />
+            </button>
+            <div style={{ flex: 1 }} />
+            <button onClick={() => { if (confirm(`Regel "${rule.name}" löschen?`)) onDelete() }}
+                    className="btn-icon-danger" title="Löschen">
+              <Icon name="delete" size={14} />
+            </button>
+          </div>
+
+          <div style={{ marginTop: 10, display: 'flex', flexDirection: 'column', gap: 10 }}>
+            <div>
+              <div style={{ ...labelXs, marginBottom: 6 }}>Bedingungen</div>
+              <ConditionsEditor rule={rule} layers={layers} onChange={onPatch} />
+            </div>
+            <div>
+              <div style={{ ...labelXs, marginBottom: 6 }}>Überschreibungen</div>
+              <ActionsEditor
+                actions={rule.actions}
+                linetypes={linetypes}
+                hatchPatterns={hatchPatterns}
+                onChange={(a) => onPatch({ ...rule, actions: a })}
+              />
+            </div>
+          </div>
+        </>
+      )}
+    </div>
+  )
+}
+
+// ---------------------------------------------------------------------------
+
+export default function OverridesApp() {
+  const [state, setState] = useState({
+    enabled: false, rules: [], layers: [], linetypes: [], hatchPatterns: [], presets: [],
+    activePreset: null,
+  })
+  const [selectedPreset, setSelectedPreset] = useState('')
+  const [ctxMenu, setCtxMenu] = useState(null)  // {x, y, ruleId}
+
+  useEffect(() => {
+    onMessage('STATE', (s) => {
+      setState((prev) => ({ ...prev, ...s }))
+      // Dropdown synct sich auf das Backend-activePreset nur wenn der wert
+      // gesetzt ist (z.B. nachdem Topbar eine Kombination geladen hat).
+      // Wenn activePreset null wird (Rules wurden gerade editiert -> variant C),
+      // BEHALTEN wir die lokale Auswahl — sonst weiss der Save-Button nicht
+      // mehr in welche Kombination der User gerade editiert.
+      if (s && s.activePreset) {
+        setSelectedPreset(s.activePreset)
+      }
+    })
+    notifyReady()
+  }, [])
+
+  const onPatch = (rule) => updateRule(rule.id, rule)
+  const onMove = (id, delta) => {
+    const ids = state.rules.map(r => r.id)
+    const i = ids.indexOf(id)
+    const j = i + delta
+    if (i < 0 || j < 0 || j >= ids.length) return
+    const next = ids.slice()
+    next.splice(j, 0, next.splice(i, 1)[0])
+    reorderRules(next)
+  }
+
+  // Kontextmenue fuer eine Regel — analog Ausschnitte/Ebenen.
+  const ruleCtxItems = (ruleId) => {
+    const rule = (state.rules || []).find(r => r.id === ruleId)
+    if (!rule) return []
+    const i = state.rules.findIndex(r => r.id === ruleId)
+    const enabled = rule.enabled !== false
+    return [
+      { label: enabled ? 'Deaktivieren' : 'Aktivieren',
+        icon: enabled ? 'visibility_off' : 'visibility',
+        onClick: () => updateRule(ruleId, { ...rule, enabled: !enabled }) },
+      { divider: true },
+      { label: 'Prio hoeher (nach oben)',
+        icon: 'arrow_upward', disabled: i <= 0,
+        onClick: () => onMove(ruleId, -1) },
+      { label: 'Prio tiefer (nach unten)',
+        icon: 'arrow_downward', disabled: i >= state.rules.length - 1,
+        onClick: () => onMove(ruleId, +1) },
+      { divider: true },
+      { label: 'Duplizieren',
+        icon: 'content_copy',
+        onClick: () => duplicateRule(ruleId) },
+      { divider: true },
+      { label: 'Loeschen',
+        icon: 'delete', danger: true,
+        onClick: () => {
+          if (window.confirm(`Regel "${rule.name || '(ohne Name)'}" loeschen?`)) deleteRule(ruleId)
+        } },
+    ]
+  }
+
+
+  return (
+    <div style={{
+      width: '100%', height: '100%',
+      display: 'flex', flexDirection: 'column',
+      padding: 10, gap: 10,
+      fontFamily: 'var(--font)', color: 'var(--text-primary)',
+      background: 'var(--bg-base)',
+      boxSizing: 'border-box',
+    }}>
+      {/* Header — globaler Toggle + Refresh + FAB neue Regel */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+        <button
+          onClick={() => setOverridesEnabled(!state.enabled)}
+          className={state.enabled ? 'btn-contained' : 'btn-outlined'}
+          style={{ flex: 1 }}
+          title="Overrides global an/aus"
+        >
+          <Icon name={state.enabled ? 'visibility' : 'visibility_off'} size={14} />
+          <span>{state.enabled ? 'Overrides AN' : 'Overrides AUS'}</span>
+        </button>
+        <button onClick={reapplyOverrides} className="btn-icon-tonal" title="Regeln neu anwenden">
+          <Icon name="refresh" size={14} />
+        </button>
+        <button
+          onClick={() => addRule({})}
+          className="btn-add"
+          title="Neue Regel oben einfügen (höchste Priorität)"
+        >
+          <Icon name="add" size={16} />
+        </button>
+      </div>
+
+      {/* Override-Kombinationen — Dropdown plus kontextabhaengiger Save. */}
+      <div style={{
+        display: 'flex', flexDirection: 'column', gap: 6,
+        padding: 10,
+        background: 'var(--bg-section)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+      }}>
+        <span style={labelXs}>Override-Kombinationen</span>
+        <select
+          value={selectedPreset}
+          onChange={(e) => {
+            const v = e.target.value
+            setSelectedPreset(v)
+            if (v) {
+              loadPreset(v, 'replace')
+            } else {
+              // "— neu / keine —" → Editor wirklich leeren, sonst bleiben
+              // die Regeln der vorigen Kombination stehen und der User
+              // baut versehentlich auf altem Stand weiter.
+              clearOverrideRules()
+            }
+          }}
+          style={{ width: '100%' }}
+          title="Kombination zum Bearbeiten oeffnen"
+        >
+          <option value="">— neu / keine —</option>
+          {(state.presets || []).map(p => (
+            <option key={p.name} value={p.name}>
+              {p.name} ({p.ruleCount})
+            </option>
+          ))}
+        </select>
+        <div style={{ display: 'flex', gap: 6 }}>
+          <button
+            onClick={() => {
+              if (selectedPreset) { savePreset(selectedPreset); return }
+              const existing = (state.presets || []).map(p => p.name)
+              const def = `Kombination ${existing.length + 1}`
+              const name = window.prompt('Name fuer neue Kombination:', def)
+              if (!name || !name.trim()) return
+              const t = name.trim()
+              if (existing.includes(t) && !window.confirm(`Kombination "${t}" ueberschreiben?`)) return
+              savePreset(t)
+              setSelectedPreset(t)
+            }}
+            disabled={state.rules.length === 0}
+            className="btn-outlined"
+            style={{ flex: 1, display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 6 }}
+            title={selectedPreset
+              ? `Aenderungen in "${selectedPreset}" speichern`
+              : 'Aktuelle Regeln als neue Kombination speichern'}
+          >
+            <Icon name="save" size={14} />
+            <span>{selectedPreset ? 'Speichern' : 'Als Kombination speichern…'}</span>
+          </button>
+          <button
+            onClick={() => {
+              if (!selectedPreset) return
+              if (!window.confirm(`Kombination "${selectedPreset}" dauerhaft loeschen?`)) return
+              deletePreset(selectedPreset)
+              setSelectedPreset('')
+            }}
+            disabled={!selectedPreset}
+            className="btn-icon-danger"
+            title="Gewaehlte Kombination dauerhaft loeschen"
+          >
+            <Icon name="delete" size={14} />
+          </button>
+        </div>
+      </div>
+
+      <div style={{ fontSize: 10, color: 'var(--text-muted)', fontStyle: 'italic', lineHeight: 1.4 }}>
+        Regeln sind additiv. Bei Konflikt gewinnt die <b>oberste</b>.
+      </div>
+
+      {/* Rule list */}
+      <div style={{ flex: 1, overflowY: 'auto', overflowX: 'hidden', minHeight: 0 }}>
+        {(state.rules || []).length === 0 && (
+          <div style={{
+            padding: '32px 16px', textAlign: 'center',
+            color: 'var(--text-muted)', fontSize: 11,
+            border: '1px dashed var(--border)',
+            borderRadius: 'var(--r-lg)',
+            background: 'var(--bg-section)',
+          }}>
+            <Icon name="auto_fix_high" size={32} style={{ color: 'var(--text-muted)', opacity: 0.5 }} />
+            <div style={{ marginTop: 8 }}>Noch keine Regeln.</div>
+            <div style={{ marginTop: 4, fontSize: 10 }}>
+              Oben <Icon name="add" size={11} /> klicken um eine neue Regel zu erstellen.
+            </div>
+          </div>
+        )}
+        {(state.rules || []).map((r, i) => (
+          <RuleCard
+            key={r.id}
+            rule={r}
+            index={i}
+            total={state.rules.length}
+            layers={state.layers}
+            linetypes={state.linetypes}
+            hatchPatterns={state.hatchPatterns}
+            onPatch={onPatch}
+            onDelete={() => deleteRule(r.id)}
+            onDuplicate={() => duplicateRule(r.id)}
+            onMoveUp={() => onMove(r.id, -1)}
+            onMoveDown={() => onMove(r.id, +1)}
+            onContextMenu={(ev) => setCtxMenu({ x: ev.clientX, y: ev.clientY, ruleId: r.id })}
+          />
+        ))}
+      </div>
+      {ctxMenu && (
+        <ContextMenu
+          x={ctxMenu.x}
+          y={ctxMenu.y}
+          items={ruleCtxItems(ctxMenu.ruleId)}
+          onClose={() => setCtxMenu(null)}
+        />
+      )}
+    </div>
+  )
+}
diff --git a/src/WerkzeugeApp.jsx b/src/WerkzeugeApp.jsx
new file mode 100644
index 0000000..55cfaa9
--- /dev/null
+++ b/src/WerkzeugeApp.jsx
@@ -0,0 +1,113 @@
+import { useEffect } from 'react'
+import Icon from './components/Icon'
+import { notifyReady, runRhinoCommand } from './lib/rhinoBridge'
+
+// Tool-Definitionen: [icon, label, rhino-command, tooltip]
+// Material-Symbol-Namen siehe https://fonts.google.com/icons
+const TOOLS = {
+  '2D Zeichnen': [
+    ['horizontal_rule',         'Line',      '_Line',       'Linie zwischen zwei Punkten'],
+    ['polyline',                'Polyline',  '_Polyline',   'Polylinie'],
+    ['rectangle',               'Rect',      '_Rectangle',  'Rechteck'],
+    ['radio_button_unchecked',  'Circle',    '_Circle',     'Kreis'],
+    ['network_intelligence',    'Arc',       '_Arc',        'Bogen'],
+    ['gesture',                 'Curve',     '_Curve',      'Freie Kurve (Spline)'],
+    ['text_fields',             'Text',      '_Text',       'Text'],
+    ['grid_view',               'Hatch',     '_Hatch',      'Schraffur'],
+    ['straighten',              'Dim',       '_Dim',        'Linearbemassung'],
+  ],
+  '2D Editieren': [
+    ['open_with',         'Move',     '_Move',      'Verschieben'],
+    ['content_copy',      'Copy',     '_Copy',      'Kopieren'],
+    ['rotate_right',      'Rotate',   '_Rotate',    'Drehen'],
+    ['aspect_ratio',      'Scale',    '_Scale',     'Skalieren'],
+    ['flip',              'Mirror',   '_Mirror',    'Spiegeln'],
+    ['padding',           'Offset',   '_Offset',    'Parallelversatz'],
+    ['content_cut',       'Trim',     '_Trim',      'Stutzen'],
+    ['swipe_right_alt',   'Extend',   '_Extend',    'Verlaengern'],
+    ['link',              'Join',     '_Join',      'Verbinden'],
+    ['scatter_plot',      'Explode',  '_Explode',   'Aufloesen'],
+    ['rounded_corner',    'Fillet',   '_Fillet',    'Verrunden (Ecke abrunden)'],
+    ['apps',              'Array',    '_ArrayPolar','Polar-Array'],
+  ],
+  '3D Modellieren': [
+    ['vertical_align_top','Extrude',  '_ExtrudeCrv',         'Kurve zu 3D extrudieren'],
+    ['square',            'Box',      '_Box',                'Quader'],
+    ['join_inner',        'Union',    '_BooleanUnion',       'Boolean-Vereinigung'],
+    ['remove',            'Diff',     '_BooleanDifference',  'Boolean-Differenz'],
+    ['gradient',          'Intersect','_BooleanIntersection','Boolean-Schnittmenge'],
+    ['roofing',           'Cap',      '_Cap',                'Planare Loecher schliessen'],
+    ['cut',               'Section',  '_Section',            'Schnittlinien erzeugen'],
+    ['unfold_more',       'Loft',     '_Loft',               'Loft (Kurven verbinden)'],
+  ],
+  'Auswahl': [
+    ['add_link',         'Chain',     '_SelChain',     'Tangentiale Kurvenkette waehlen'],
+    ['filter_alt',       'Dup',       '_SelDup',       'Doppelte Objekte waehlen'],
+    ['loop',             'Closed',    '_SelClosedCrv', 'Geschlossene Kurven waehlen'],
+    ['compare_arrows',   'Invert',    '_Invert',       'Auswahl invertieren'],
+    ['select_all',       'All',       '_SelAll',       'Alle auswaehlen'],
+    ['deselect',         'None',      '_SelNone',      'Auswahl aufheben'],
+  ],
+}
+
+// ---------------------------------------------------------------------------
+
+function ToolButton({ icon, label, cmd, tip }) {
+  return (
+    <button
+      onClick={() => runRhinoCommand(cmd)}
+      title={`${tip} (${cmd})`}
+      style={{
+        width: '100%',
+        padding: '6px 8px',
+        display: 'flex', alignItems: 'center', gap: 8,
+        background: 'var(--bg-item)', border: '1px solid var(--border)',
+        borderRadius: 'var(--r)', color: 'var(--text-primary)',
+        cursor: 'pointer', textAlign: 'left',
+      }}
+    >
+      <Icon name={icon} size={16} style={{ flexShrink: 0 }} />
+      <span style={{ fontSize: 11, fontWeight: 500 }}>{label}</span>
+    </button>
+  )
+}
+
+function GroupLabel({ children }) {
+  return (
+    <div style={{
+      fontSize: 9, color: 'var(--text-muted)', textTransform: 'uppercase',
+      letterSpacing: '0.05em',
+      padding: '8px 4px 4px',
+      borderTop: '1px solid var(--border)',
+    }}>{children}</div>
+  )
+}
+
+// ---------------------------------------------------------------------------
+
+export default function WerkzeugeApp() {
+  useEffect(() => { notifyReady() }, [])
+
+  const groups = Object.entries(TOOLS)
+
+  return (
+    <div style={{
+      width: '100%', height: '100%',
+      display: 'flex', flexDirection: 'column', gap: 0,
+      padding: 6,
+      fontFamily: 'var(--font)', color: 'var(--text-primary)',
+      background: 'var(--bg-base)',
+      boxSizing: 'border-box',
+      overflowY: 'auto', overflowX: 'hidden',
+    }}>
+      {groups.map(([title, items], gi) => (
+        <div key={title} style={{ display: 'flex', flexDirection: 'column', gap: 3 }}>
+          <GroupLabel>{title}</GroupLabel>
+          {items.map(([icon, label, cmd, tip]) => (
+            <ToolButton key={cmd} icon={icon} label={label} cmd={cmd} tip={tip} />
+          ))}
+        </div>
+      ))}
+    </div>
+  )
+}
diff --git a/src/assets/hero.png b/src/assets/hero.png
new file mode 100644
index 0000000..02251f4
Binary files /dev/null and b/src/assets/hero.png differ
diff --git a/src/assets/vite.svg b/src/assets/vite.svg
new file mode 100644
index 0000000..5101b67
--- /dev/null
+++ b/src/assets/vite.svg
@@ -0,0 +1 @@
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diff --git a/src/components/AusschnittLayerDialog.jsx b/src/components/AusschnittLayerDialog.jsx
new file mode 100644
index 0000000..a4b4341
--- /dev/null
+++ b/src/components/AusschnittLayerDialog.jsx
@@ -0,0 +1,302 @@
+import { useState, useMemo, useEffect } from 'react'
+import Icon from './Icon'
+
+// Erzeugt ein vollstaendiges Draft-Array fuer einen Preset.
+// Layer die im Preset nicht enthalten sind werden auf Default (visible=true,
+// locked=false) gesetzt — sonst gibt es Schmutz wenn man zwischen Presets
+// hin- und herwechselt.
+function draftFromPreset(allLayers, preset) {
+  if (!preset || !preset.layers) {
+    return allLayers.map(l => ({ ...l }))
+  }
+  const map = {}
+  ;(preset.layers || []).forEach(l => { map[l.id] = l })
+  return allLayers.map(l => {
+    const ps = map[l.id]
+    if (ps) return { ...l, visible: !!ps.visible, locked: !!ps.locked }
+    return { ...l, visible: true, locked: false }
+  })
+}
+
+export default function AusschnittLayerDialog({
+  snapName, layers, presets,
+  onSave, onClose,
+  onSavePreset, onDeletePreset,
+}) {
+  // Welche Kombination wird gerade angezeigt? null = aktueller Doc-State
+  const [selectedPreset, setSelectedPreset] = useState(null)
+  const [draft, setDraft] = useState(() => layers.map(l => ({ ...l })))
+  const [dirty, setDirty] = useState(false)
+  const [filter, setFilter] = useState('')
+  const [newName, setNewName] = useState('')
+
+  // Wenn die Layer-Liste (von Backend) sich aendert wegen Doc-Update,
+  // resetten wir den Draft — aber nur wenn nicht dirty.
+  useEffect(() => {
+    if (dirty) return
+    if (selectedPreset === null) {
+      setDraft(layers.map(l => ({ ...l })))
+    } else {
+      const p = presets.find(p => p.name === selectedPreset)
+      setDraft(draftFromPreset(layers, p))
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [layers])
+
+  const filtered = useMemo(() => {
+    const f = filter.trim().toLowerCase()
+    if (!f) return draft
+    return draft.filter(l => (l.fullPath || l.name || '').toLowerCase().includes(f))
+  }, [draft, filter])
+
+  const pickPreset = (name) => {
+    if (dirty && !window.confirm('Ungespeicherte Änderungen verwerfen?')) return
+    setSelectedPreset(name || null)
+    setDirty(false)
+    if (!name) {
+      setDraft(layers.map(l => ({ ...l })))
+    } else {
+      const p = presets.find(p => p.name === name)
+      setDraft(draftFromPreset(layers, p))
+    }
+  }
+
+  const toggle = (id, field) => {
+    setDraft(d => d.map(l => l.id === id ? { ...l, [field]: !l[field] } : l))
+    setDirty(true)
+  }
+
+  const setAll = (field, value) => {
+    setDraft(d => d.map(l => filtered.find(f => f.id === l.id) ? { ...l, [field]: value } : l))
+    setDirty(true)
+  }
+
+  const savePresetChanges = () => {
+    if (!selectedPreset) return
+    if (!window.confirm(`Änderungen an Kombination "${selectedPreset}" speichern?`)) return
+    onSavePreset(selectedPreset, draft.map(l => ({ id: l.id, visible: l.visible, locked: l.locked })))
+    setDirty(false)
+  }
+
+  const saveAsNew = () => {
+    const name = newName.trim()
+    if (!name) return
+    if (presets.some(p => p.name === name) &&
+        !window.confirm(`Kombination "${name}" überschreiben?`)) return
+    onSavePreset(name, draft.map(l => ({ id: l.id, visible: l.visible, locked: l.locked })))
+    setSelectedPreset(name)
+    setDirty(false)
+    setNewName('')
+  }
+
+  const deleteSelected = () => {
+    if (!selectedPreset) return
+    if (!window.confirm(`Kombination "${selectedPreset}" löschen?`)) return
+    onDeletePreset(selectedPreset)
+    setSelectedPreset(null)
+    setDirty(false)
+    setDraft(layers.map(l => ({ ...l })))
+  }
+
+  const applyToDoc = () => {
+    if (dirty && selectedPreset &&
+        !window.confirm('Änderungen an dieser Kombination sind nicht gespeichert. Trotzdem auf das Dokument anwenden?')) return
+    onSave(draft)
+  }
+
+  return (
+    <div style={{
+      position: 'absolute', inset: 0, zIndex: 150,
+      background: 'var(--bg-overlay)',
+      display: 'flex', alignItems: 'flex-start', justifyContent: 'center',
+      paddingTop: 30,
+    }}>
+      <div style={{
+        background: 'var(--bg-dialog)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+        boxShadow: 'var(--shadow-3)',
+        width: 'calc(100% - 24px)', maxWidth: 480,
+        maxHeight: 'calc(100vh - 60px)',
+        display: 'flex', flexDirection: 'column',
+        overflow: 'hidden',
+      }}>
+        {/* Header */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 8,
+          padding: '12px 16px',
+          borderBottom: '1px solid var(--border)',
+        }}>
+          <Icon name="layers" size={16} style={{ color: 'var(--text-secondary)' }} />
+          <span style={{ flex: 1, fontWeight: 600, fontSize: 12 }}>
+            {snapName}
+          </span>
+          {dirty && (
+            <span style={{ fontSize: 10, color: 'var(--warn)',
+                           padding: '2px 6px', borderRadius: 'var(--r)',
+                           background: 'var(--warn-dim)' }}
+                  title="Ungespeicherte Änderungen">●</span>
+          )}
+          <button onClick={onClose} style={{ color: 'var(--text-muted)', fontSize: 16, padding: '0 4px' }}>×</button>
+        </div>
+
+        {/* Preset-Auswahl */}
+        <div style={{
+          padding: '10px 14px',
+          background: 'var(--bg-section)',
+          borderBottom: '1px solid var(--border-light)',
+          display: 'flex', flexDirection: 'column', gap: 8,
+        }}>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+            <span className="label-xs" style={{ flexShrink: 0 }}>Kombination</span>
+            <select
+              value={selectedPreset || ''}
+              onChange={(ev) => pickPreset(ev.target.value || null)}
+              style={{ flex: 1, fontSize: 11 }}
+            >
+              <option value="">— Aktueller Zustand —</option>
+              {presets.length > 0 && <option disabled>──────────</option>}
+              {presets.map(p => (
+                <option key={p.name} value={p.name}>
+                  {p.name} ({p.layers?.length || 0} Ebenen)
+                </option>
+              ))}
+            </select>
+            {selectedPreset && (
+              <button
+                className="btn-icon-sm"
+                onClick={deleteSelected}
+                title="Diese Kombination löschen"
+                style={{ color: 'var(--danger)' }}
+              >
+                <Icon name="delete" size={13} />
+              </button>
+            )}
+          </div>
+          {selectedPreset && (
+            <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+              <button
+                className="btn-contained"
+                onClick={savePresetChanges}
+                disabled={!dirty}
+                style={{ fontSize: 10, padding: '3px 10px',
+                         opacity: dirty ? 1 : 0.5 }}
+                title={dirty ? `Änderungen in "${selectedPreset}" speichern` : 'Keine Änderungen'}
+              >
+                <Icon name="save" size={12} />
+                <span>Speichern</span>
+              </button>
+              <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>
+                Änderungen werden NICHT automatisch gespeichert.
+              </span>
+            </div>
+          )}
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <input
+              value={newName}
+              onChange={(ev) => setNewName(ev.target.value)}
+              onKeyDown={(ev) => { if (ev.key === 'Enter') saveAsNew() }}
+              placeholder="Aktuelle Auswahl als neue Kombination speichern…"
+              style={{ flex: 1, fontSize: 10 }}
+            />
+            <button
+              className="btn-outlined"
+              onClick={saveAsNew}
+              disabled={!newName.trim()}
+              title="Aktuelle Auswahl unter diesem Namen speichern"
+              style={{ fontSize: 10, padding: '3px 8px' }}
+            >
+              <Icon name="add" size={12} /> Neu
+            </button>
+          </div>
+        </div>
+
+        {/* Such- und Bulk-Zeile */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '6px 14px',
+          borderBottom: '1px solid var(--border-light)',
+        }}>
+          <input
+            value={filter}
+            onChange={(ev) => setFilter(ev.target.value)}
+            placeholder="Filter..."
+            style={{ flex: 1, fontSize: 10, padding: '3px 6px' }}
+          />
+          <button className="btn-icon-xs" onClick={() => setAll('visible', true)}  title="Alle (gefiltert) sichtbar">
+            <Icon name="visibility" size={12} />
+          </button>
+          <button className="btn-icon-xs" onClick={() => setAll('visible', false)} title="Alle (gefiltert) ausblenden">
+            <Icon name="visibility_off" size={12} />
+          </button>
+          <button className="btn-icon-xs" onClick={() => setAll('locked', false)}  title="Alle (gefiltert) entsperren">
+            <Icon name="lock_open" size={12} />
+          </button>
+        </div>
+
+        {/* Layer-Liste */}
+        <div style={{ flex: 1, overflowY: 'auto', minHeight: 200, maxHeight: '50vh' }}>
+          {filtered.length === 0 ? (
+            <div style={{ padding: '30px 14px', textAlign: 'center', color: 'var(--text-muted)', fontSize: 11 }}>
+              Keine Ebenen gefunden.
+            </div>
+          ) : (
+            filtered.map(l => (
+              <div
+                key={l.id}
+                style={{
+                  display: 'flex', alignItems: 'center', gap: 8,
+                  padding: '4px 14px',
+                  borderBottom: '1px solid var(--border-light)',
+                  background: 'var(--bg-item)',
+                  opacity: l.visible ? 1 : 0.5,
+                }}
+              >
+                <span style={{
+                  width: 10, height: 10, borderRadius: 2,
+                  background: l.color || '#888',
+                  flexShrink: 0,
+                  border: '1px solid var(--border-light)',
+                }} />
+                <span style={{
+                  flex: 1, fontSize: 11,
+                  color: 'var(--text-label)',
+                  overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+                  fontFamily: 'var(--font-mono)',
+                }} title={l.fullPath}>{l.fullPath || l.name}</span>
+                <button
+                  className={`btn-icon-xs ${l.visible ? 'is-on' : ''}`}
+                  onClick={() => toggle(l.id, 'visible')}
+                  title={l.visible ? 'Ausblenden' : 'Einblenden'}
+                ><Icon name={l.visible ? 'visibility' : 'visibility_off'} size={12} /></button>
+                <button
+                  className={`btn-icon-xs ${l.locked ? 'is-on' : ''}`}
+                  onClick={() => toggle(l.id, 'locked')}
+                  title={l.locked ? 'Entsperren' : 'Sperren'}
+                ><Icon name={l.locked ? 'lock' : 'lock_open'} size={12} /></button>
+              </div>
+            ))
+          )}
+        </div>
+
+        {/* Footer */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '10px 14px',
+          borderTop: '1px solid var(--border)',
+          background: 'var(--bg-section)',
+        }}>
+          <div style={{ flex: 1, fontSize: 10, color: 'var(--text-muted)' }}>
+            {draft.filter(l => l.visible).length} / {draft.length} sichtbar
+          </div>
+          <button className="btn-text" onClick={onClose}>Schliessen</button>
+          <button className="btn-contained" onClick={applyToDoc}
+                  title="Aktuelle Auswahl auf das Dokument anwenden">
+            <Icon name="check" size={12} />
+            <span>Auf Doc anwenden</span>
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/BottomBar.jsx b/src/components/BottomBar.jsx
new file mode 100644
index 0000000..95db86f
--- /dev/null
+++ b/src/components/BottomBar.jsx
@@ -0,0 +1,33 @@
+export default function BottomBar({ onApply, dirty }) {
+  return (
+    <div style={{
+      flexShrink: 0,
+      borderTop: '1px solid var(--border)',
+      background: 'var(--bg-section)',
+      padding: '10px 14px',
+    }}>
+      <button
+        onClick={onApply}
+        disabled={!dirty}
+        style={{
+          width: '100%',
+          padding: '8px 0',
+          borderRadius: 'var(--r)',
+          fontWeight: 600,
+          fontSize: 11,
+          letterSpacing: '0.07em',
+          textTransform: 'uppercase',
+          background: dirty ? 'var(--accent)' : 'var(--bg-item)',
+          color: dirty ? '#fff' : 'var(--text-muted)',
+          border: dirty ? 'none' : '1px solid var(--border)',
+          cursor: dirty ? 'pointer' : 'default',
+          transition: 'background 0.18s, color 0.18s',
+        }}
+        onMouseEnter={e => { if (dirty) e.currentTarget.style.background = 'var(--accent-light)' }}
+        onMouseLeave={e => { if (dirty) e.currentTarget.style.background = dirty ? 'var(--accent)' : 'var(--bg-item)' }}
+      >
+        {dirty ? 'Auf Rhino anwenden' : 'Keine Änderungen'}
+      </button>
+    </div>
+  )
+}
diff --git a/src/components/ConfirmDeleteEbene.jsx b/src/components/ConfirmDeleteEbene.jsx
new file mode 100644
index 0000000..6637a69
--- /dev/null
+++ b/src/components/ConfirmDeleteEbene.jsx
@@ -0,0 +1,71 @@
+import { useState } from 'react'
+import Icon from './Icon'
+
+export default function ConfirmDeleteEbene({ ebene, otherEbenen, onConfirm, onCancel }) {
+  const [target, setTarget] = useState(otherEbenen[0]?.code ?? '_delete')
+  const isDelete = target === '_delete'
+
+  return (
+    <div style={{
+      position: 'absolute', inset: 0, zIndex: 200,
+      background: 'var(--bg-overlay)',
+      display: 'flex', alignItems: 'center', justifyContent: 'center',
+      padding: 16,
+    }}>
+      <div style={{
+        background: 'var(--bg-dialog)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+        boxShadow: 'var(--shadow-3)',
+        width: 320, maxWidth: '100%',
+        display: 'flex', flexDirection: 'column',
+        overflow: 'hidden',
+      }}>
+        <div style={{ padding: '16px 18px 6px', display: 'flex', gap: 10, alignItems: 'flex-start' }}>
+          <span style={{
+            display: 'inline-flex', alignItems: 'center', justifyContent: 'center',
+            width: 28, height: 28, borderRadius: '50%',
+            background: 'var(--warn-dim)', color: 'var(--warn)',
+            flexShrink: 0,
+          }}>
+            <Icon name="warning" size={18} />
+          </span>
+          <div>
+            <div style={{ fontWeight: 600, fontSize: 13, color: 'var(--text-primary)', marginBottom: 2 }}>
+              Ebene löschen
+            </div>
+            <div style={{ fontSize: 11, color: 'var(--text-secondary)', lineHeight: 1.5 }}>
+              <b>{ebene.code}_{ebene.name}</b> wird in allen Zeichnungsebenen entfernt.
+            </div>
+          </div>
+        </div>
+
+        <div style={{ padding: '10px 18px 14px', display: 'flex', flexDirection: 'column', gap: 6 }}>
+          <span className="label-xs">Inhalte auf der Ebene</span>
+          <select value={target} onChange={ev => setTarget(ev.target.value)}>
+            {otherEbenen.map(e => (
+              <option key={e.code} value={e.code}>→ Verschieben nach {e.code}_{e.name}</option>
+            ))}
+            <option value="_delete">⚠  Inhalte ebenfalls löschen</option>
+          </select>
+        </div>
+
+        <div style={{
+          display: 'flex', gap: 4, padding: '10px 14px',
+          justifyContent: 'flex-end',
+          borderTop: '1px solid var(--border-light)',
+          background: 'var(--bg-section)',
+        }}>
+          <button className="btn-text" onClick={onCancel}>Abbrechen</button>
+          <button
+            className="btn-contained"
+            style={isDelete ? { background: 'var(--danger)' } : undefined}
+            onClick={() => onConfirm(isDelete ? null : target)}
+          >
+            Löschen
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/ContextMenu.jsx b/src/components/ContextMenu.jsx
new file mode 100644
index 0000000..f51d8e6
--- /dev/null
+++ b/src/components/ContextMenu.jsx
@@ -0,0 +1,88 @@
+import { useEffect, useRef, useState } from 'react'
+import Icon from './Icon'
+
+export default function ContextMenu({ x, y, items, onClose }) {
+  const ref = useRef(null)
+  const [pos, setPos] = useState({ left: x, top: y })
+
+  // Falls Menue rechts/unten ueberlaufen wuerde, links/oben verschieben
+  useEffect(() => {
+    if (!ref.current) return
+    const rect = ref.current.getBoundingClientRect()
+    const vw = window.innerWidth
+    const vh = window.innerHeight
+    let left = x, top = y
+    if (left + rect.width > vw - 4)  left = vw - rect.width - 4
+    if (top + rect.height > vh - 4)  top = vh - rect.height - 4
+    if (left < 4) left = 4
+    if (top < 4)  top = 4
+    setPos({ left, top })
+  }, [x, y])
+
+  useEffect(() => {
+    const handleClick = (ev) => {
+      if (ref.current && !ref.current.contains(ev.target)) onClose()
+    }
+    const handleKey = (ev) => { if (ev.key === 'Escape') onClose() }
+    const handleContext = (ev) => { ev.preventDefault(); onClose() }
+    const t = setTimeout(() => {
+      document.addEventListener('mousedown', handleClick)
+      document.addEventListener('keydown', handleKey)
+      document.addEventListener('contextmenu', handleContext)
+    }, 0)
+    return () => {
+      clearTimeout(t)
+      document.removeEventListener('mousedown', handleClick)
+      document.removeEventListener('keydown', handleKey)
+      document.removeEventListener('contextmenu', handleContext)
+    }
+  }, [onClose])
+
+  return (
+    <div
+      ref={ref}
+      style={{
+        position: 'fixed',
+        top: pos.top, left: pos.left,
+        background: 'var(--bg-dialog)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r)',
+        boxShadow: 'var(--shadow-3)',
+        padding: '4px 0',
+        minWidth: 180,
+        zIndex: 300,
+      }}
+    >
+      {items.map((it, i) => (
+        it.divider ? (
+          <div key={i} style={{ height: 1, background: 'var(--border-light)', margin: '4px 0' }} />
+        ) : (
+          <button
+            key={i}
+            disabled={it.disabled}
+            onClick={() => { if (!it.disabled) { it.onClick(); onClose() } }}
+            onMouseEnter={(ev) => { if (!it.disabled) ev.currentTarget.style.background = 'var(--overlay-hover)' }}
+            onMouseLeave={(ev) => { ev.currentTarget.style.background = 'transparent' }}
+            style={{
+              width: '100%', textAlign: 'left',
+              padding: '6px 14px', fontSize: 11,
+              color: it.disabled ? 'var(--text-muted)'
+                   : it.danger   ? 'var(--danger)'
+                   : 'var(--text-primary)',
+              display: 'flex', alignItems: 'center', gap: 10,
+              borderRadius: 0,
+              cursor: it.disabled ? 'default' : 'pointer',
+              background: 'transparent',
+            }}
+          >
+            {it.icon
+              ? <Icon name={it.icon} size={14} style={{ color: it.disabled ? 'var(--text-muted)' : it.danger ? 'var(--danger)' : 'var(--text-secondary)' }} />
+              : <span style={{ width: 14 }} />}
+            <span style={{ flex: 1 }}>{it.label}</span>
+            {it.shortcut && <span style={{ fontSize: 9, color: 'var(--text-muted)', fontFamily: 'var(--font-mono)' }}>{it.shortcut}</span>}
+          </button>
+        )
+      ))}
+    </div>
+  )
+}
diff --git a/src/components/EbenenManager.jsx b/src/components/EbenenManager.jsx
new file mode 100644
index 0000000..7344dc8
--- /dev/null
+++ b/src/components/EbenenManager.jsx
@@ -0,0 +1,587 @@
+import { useState, useRef, useMemo, useEffect } from 'react'
+import Section from './Section'
+import Icon from './Icon'
+import ConfirmDeleteEbene from './ConfirmDeleteEbene'
+import ContextMenu from './ContextMenu'
+import EbenenSettingsDialog from './EbenenSettingsDialog'
+import { setLayerStyle, deleteEbene, moveSelectionToEbene } from '../lib/rhinoBridge'
+
+const MODES = [
+  { value: 'all',         label: 'Alle anzeigen' },
+  { value: 'active',      label: 'Nur aktive' },
+  { value: 'grey',        label: 'Andere grau' },
+  { value: 'grey_locked', label: 'Andere grau & gesperrt' },
+]
+
+const LW_PRESETS = [0.02, 0.10, 0.13, 0.18, 0.25, 0.35, 0.50, 0.70, 1.00]
+
+function ColorPicker({ color, onChange }) {
+  const ref = useRef(null)
+  return (
+    <>
+      <div
+        onClick={(ev) => { ev.stopPropagation(); ref.current?.click() }}
+        title="Farbe ändern"
+        style={{
+          width: 12, height: 12, borderRadius: 2,
+          background: color, flexShrink: 0,
+          border: '1px solid var(--border)',
+          cursor: 'pointer',
+        }}
+      />
+      <input
+        ref={ref}
+        type="color"
+        value={color}
+        onChange={(ev) => onChange(ev.target.value)}
+        onClick={(ev) => ev.stopPropagation()}
+        style={{ position: 'absolute', opacity: 0, width: 0, height: 0, pointerEvents: 'none' }}
+      />
+    </>
+  )
+}
+
+function LwCell({ lw, onChange }) {
+  const [editing, setEditing] = useState(false)
+  const [value,   setValue]   = useState(lw.toFixed(2))
+
+  const commit = () => {
+    const v = parseFloat(value)
+    if (!isNaN(v) && v > 0) onChange(v)
+    else setValue(lw.toFixed(2))
+    setEditing(false)
+  }
+
+  const step = (dir) => {
+    let next
+    if (dir > 0) next = LW_PRESETS.find(p => p > lw + 0.001)
+    else         next = [...LW_PRESETS].reverse().find(p => p < lw - 0.001)
+    if (next !== undefined) onChange(next)
+  }
+
+  return (
+    <div style={{ display: 'flex', alignItems: 'center', gap: 2, width: 42, justifyContent: 'flex-end', flexShrink: 0 }}>
+      {editing ? (
+        <input
+          type="number" step="0.01" min="0.01" max="2.0"
+          value={value}
+          autoFocus
+          onChange={(ev) => setValue(ev.target.value)}
+          onBlur={commit}
+          onKeyDown={(ev) => { if (ev.key === 'Enter') commit(); if (ev.key === 'Escape') { setValue(lw.toFixed(2)); setEditing(false) } }}
+          onClick={(ev) => ev.stopPropagation()}
+          style={{ width: 28, fontSize: 9, padding: '1px 2px', textAlign: 'right' }}
+        />
+      ) : (
+        <span
+          onDoubleClick={(ev) => { ev.stopPropagation(); setEditing(true); setValue(lw.toFixed(2)) }}
+          title="Doppelklick zum Bearbeiten"
+          style={{ fontSize: 9, fontFamily: 'var(--font-mono)', color: 'var(--text-muted)', cursor: 'text', minWidth: 22, textAlign: 'right' }}
+        >{lw.toFixed(2)}</span>
+      )}
+      <div style={{ display: 'flex', flexDirection: 'column', gap: 0 }}>
+        <button className="btn-step" onClick={(ev) => { ev.stopPropagation(); step(+1) }} style={{ width: 10, height: 7 }}>
+          <Icon name="arrow_drop_up" size={10} />
+        </button>
+        <button className="btn-step" onClick={(ev) => { ev.stopPropagation(); step(-1) }} style={{ width: 10, height: 7 }}>
+          <Icon name="arrow_drop_down" size={10} />
+        </button>
+      </div>
+    </div>
+  )
+}
+
+function EditableText({ value, onCommit, style, fontWeight, fontSize, autoEditTrigger }) {
+  const [editing, setEditing] = useState(false)
+  const [val,     setVal]     = useState(value)
+  const lastTrigger = useRef(null)
+  const inputRef    = useRef(null)
+
+  // External trigger -> Edit-Modus aktivieren
+  useEffect(() => {
+    if (autoEditTrigger && autoEditTrigger !== lastTrigger.current) {
+      lastTrigger.current = autoEditTrigger
+      setVal(value)
+      setEditing(true)
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [autoEditTrigger])
+
+  // Beim Edit-Start: Inhalt selektieren
+  useEffect(() => {
+    if (editing && inputRef.current) {
+      inputRef.current.focus()
+      try { inputRef.current.select() } catch (e) {}
+    }
+  }, [editing])
+
+  const commit = () => {
+    const trimmed = (val ?? '').trim()
+    if (trimmed && trimmed !== value) onCommit(trimmed)
+    else setVal(value)
+    setEditing(false)
+  }
+
+  if (editing) {
+    return (
+      <input
+        ref={inputRef}
+        value={val}
+        onChange={(ev) => setVal(ev.target.value)}
+        onBlur={commit}
+        onKeyDown={(ev) => {
+          if (ev.key === 'Enter') commit()
+          if (ev.key === 'Escape') { setVal(value); setEditing(false) }
+        }}
+        onClick={(ev) => ev.stopPropagation()}
+        style={{ ...style, fontWeight, fontSize, padding: '1px 4px' }}
+      />
+    )
+  }
+  return (
+    <span
+      onDoubleClick={(ev) => { ev.stopPropagation(); setVal(value); setEditing(true) }}
+      title="Doppelklick zum Umbenennen"
+      style={{ ...style, fontWeight, fontSize, cursor: 'text' }}
+    >{value}</span>
+  )
+}
+
+function EbeneRow({ e, active, mode, onClick, onContextMenu, onToggleVisible, onToggleLock, onColorChange, onLwChange, onNameChange, onCodeChange, onDelete, autoEditCode, autoEditName, rowRef }) {
+  // Auge zeigt den Eye-State (User-Intention) — auch fuer die aktive Ebene.
+  // So sieht man auf einen Blick ob sie "normalerweise" sichtbar waere.
+  // Aktive Ebene rendert Rhino zwar immer sichtbar, das visible-Flag bleibt
+  // aber die gespeicherte Intention bis sie wieder de-aktiviert wird.
+  const eyeShown = mode !== 'active'
+  return (
+    <div
+      ref={rowRef}
+      data-ebene-code={e.code}
+      onClick={onClick}
+      onContextMenu={onContextMenu}
+      style={{
+        display: 'flex', alignItems: 'center', gap: 5,
+        padding: '3px 12px',
+        margin: active ? '1px 6px' : '0',
+        background: active ? 'var(--active-dim)'
+                  : (e.visible !== false) ? 'var(--bg-item)'
+                  : 'var(--bg-panel)',
+        // Pill-Form fuer die aktive Ebene, sonst Standard-Zeile mit Bottom-Border
+        borderRadius: active ? 999 : 0,
+        borderLeft: active ? 'none' : '3px solid transparent',
+        borderBottom: active ? 'none' : '1px solid var(--border-light)',
+        boxShadow: active ? 'inset 0 0 0 1px var(--active-light)' : 'none',
+        opacity: (!active && e.visible === false && mode !== 'all') ? 0.45 : 1,
+        cursor: 'pointer',
+        userSelect: 'none',
+      }}
+    >
+      {eyeShown ? (
+        <button
+          className={`btn-icon-sm ${e.visible !== false ? 'is-on' : ''}`}
+          onClick={(ev) => { ev.stopPropagation(); onToggleVisible() }}
+          title={
+            active
+              ? (e.visible !== false
+                  ? 'Normalerweise sichtbar (aktive Ebene wird trotzdem gezeigt)'
+                  : 'Normalerweise ausgeblendet — wird nur sichtbar weil aktiv')
+              : (e.visible !== false ? 'Ausblenden' : 'Einblenden')
+          }
+        ><Icon name={e.visible !== false ? 'visibility' : 'visibility_off'} size={14} /></button>
+      ) : (
+        <span style={{ width: 18, flexShrink: 0 }} />
+      )}
+
+      <EditableText
+        value={e.code}
+        onCommit={onCodeChange}
+        autoEditTrigger={autoEditCode}
+        fontSize={9}
+        style={{ fontFamily: 'var(--font-mono)', color: 'var(--text-muted)', width: 24, textAlign: 'left', flexShrink: 0 }}
+      />
+
+      <ColorPicker color={e.color} onChange={onColorChange} />
+
+      <div style={{ flex: 1, minWidth: 0 }}>
+        <EditableText
+          value={e.name}
+          onCommit={onNameChange}
+          autoEditTrigger={autoEditName}
+          fontWeight={active ? 700 : 400}
+          fontSize={11}
+          style={{
+            color: active ? 'var(--active-light)'
+                  : (e.visible !== false) ? 'var(--text-label)'
+                  : 'var(--text-muted)',
+            display: 'inline-block', width: '100%',
+            overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+          }}
+        />
+      </div>
+
+      <LwCell lw={e.lw} onChange={onLwChange} />
+
+      <button
+        className="btn-icon-xs"
+        onClick={(ev) => { ev.stopPropagation(); onToggleLock() }}
+        title={e.locked ? 'Entsperren' : 'Sperren'}
+        style={{ color: e.locked ? 'var(--warn)' : undefined }}
+      ><Icon name={e.locked ? 'lock' : 'lock_open'} size={12} /></button>
+
+      <button
+        className="btn-icon-xs"
+        onClick={(ev) => { ev.stopPropagation(); onDelete() }}
+        title="Löschen"
+      ><Icon name="close" size={12} /></button>
+    </div>
+  )
+}
+
+function SortHeader({ label, sortKey, sortBy, sortDir, onSort, style }) {
+  const active = sortBy === sortKey
+  return (
+    <span
+      className="label-xs"
+      onClick={() => onSort(sortKey)}
+      style={{
+        cursor: 'pointer', userSelect: 'none',
+        display: 'inline-flex', alignItems: 'center', gap: 2,
+        color: active ? 'var(--text-secondary)' : undefined, ...style,
+      }}
+    >
+      {label}
+      {active && <Icon name={sortDir === 'asc' ? 'arrow_upward' : 'arrow_downward'} size={11} />}
+    </span>
+  )
+}
+
+export default function EbenenManager({
+  ebenen, activeCode, onActiveChange, onChange, mode, onModeChange, hatchPatterns,
+  combinations = [], activeCombName = null,
+  onPickCombination, onSaveCurrentCombination, onDeleteCombination,
+  onEditCombinations, onUserVisibilityChange,
+}) {
+  const [sortBy,        setSortBy]        = useState('code')
+  const [sortDir,       setSortDir]       = useState('asc')
+  const [deleteTarget,  setDeleteTarget]  = useState(null)
+  const [ctxMenu,       setCtxMenu]       = useState(null)  // { x, y, code }
+  const [clipboard,     setClipboard]     = useState(null)  // { color, lw }
+  const [autoEdit,      setAutoEdit]      = useState(null)  // { code, field, token }
+  const [settingsCode,  setSettingsCode]  = useState(null)  // code der Ebene deren Einstellungen offen sind
+
+  // Bei Auto-Edit: in View scrollen
+  useEffect(() => {
+    if (!autoEdit) return
+    const el = document.querySelector(`[data-ebene-code="${autoEdit.code}"]`)
+    if (el && el.scrollIntoView) {
+      el.scrollIntoView({ block: 'center', behavior: 'smooth' })
+    }
+  }, [autoEdit])
+
+  const toggleSort = (key) => {
+    if (sortBy === key) setSortDir(d => d === 'asc' ? 'desc' : 'asc')
+    else { setSortBy(key); setSortDir('asc') }
+  }
+
+  const sortedEbenen = useMemo(() => {
+    const arr = [...ebenen]
+    arr.sort((a, b) => {
+      let cmp = 0
+      if (sortBy === 'code') {
+        const ca = parseInt(a.code, 10), cb = parseInt(b.code, 10)
+        cmp = (!isNaN(ca) && !isNaN(cb)) ? ca - cb : a.code.localeCompare(b.code)
+      } else if (sortBy === 'name') {
+        cmp = a.name.localeCompare(b.name)
+      } else if (sortBy === 'lw') {
+        cmp = a.lw - b.lw
+      }
+      return sortDir === 'desc' ? -cmp : cmp
+    })
+    return arr
+  }, [ebenen, sortBy, sortDir])
+
+  const updateByCode = (code, patch) => {
+    onChange(ebenen.map(e => e.code === code ? { ...e, ...patch } : e))
+  }
+
+  const handleToggleVisible = (code) => {
+    const cur = ebenen.find(e => e.code === code)
+    if (cur) updateByCode(code, { visible: !(cur.visible !== false) })
+    if (onUserVisibilityChange) onUserVisibilityChange()
+  }
+  const handleToggleLock = (code) => {
+    const cur = ebenen.find(e => e.code === code)
+    if (cur) updateByCode(code, { locked: !cur.locked })
+    if (onUserVisibilityChange) onUserVisibilityChange()
+  }
+  const handleColorChange = (code, color) => {
+    updateByCode(code, { color })
+    setLayerStyle(code, color, undefined)
+  }
+  const handleLwChange = (code, lw) => {
+    updateByCode(code, { lw })
+    setLayerStyle(code, undefined, lw)
+  }
+  const handleNameChange = (code, name) => {
+    updateByCode(code, { name })
+    // Wenn wir gerade neue Ebene anlegen (Phase 'name') — fertig
+    if (autoEdit && autoEdit.code === code && autoEdit.field === 'name') {
+      setAutoEdit(null)
+    }
+  }
+  const handleCodeChange = (oldCode, newCode) => {
+    if (ebenen.some(e => e.code === newCode && e.code !== oldCode)) return
+    onChange(ebenen.map(e => e.code === oldCode ? { ...e, code: newCode } : e))
+    // Phase weiterschalten: Code -> Name
+    if (autoEdit && autoEdit.code === oldCode && autoEdit.field === 'code') {
+      setAutoEdit({ code: newCode, field: 'name', token: Date.now() })
+    }
+  }
+  const handleDelete = (code) => {
+    if (ebenen.length <= 1) return
+    setDeleteTarget(code)
+  }
+
+  const confirmDelete = (moveToCode) => {
+    const code = deleteTarget
+    deleteEbene(code, moveToCode)
+    onChange(ebenen.filter(e => e.code !== code))
+    if (activeCode === code) {
+      const next = ebenen.find(e => e.code !== code)
+      if (next) onActiveChange(next.code)
+    }
+    setDeleteTarget(null)
+  }
+
+  const nextFreeCode = () => {
+    const codes = ebenen.map(e => parseInt(e.code, 10)).filter(n => !isNaN(n))
+    const next  = codes.length ? Math.max(...codes) + 1 : 50
+    return String(next).padStart(2, '0')
+  }
+
+  const addNew = () => {
+    const code = nextFreeCode()
+    onChange([...ebenen, {
+      code, name: 'NEU',
+      color: '#888888', lw: 0.18, visible: true, locked: false,
+    }])
+    // Code-Feld der neuen Ebene fokussieren
+    setAutoEdit({ code, field: 'code', token: Date.now() })
+  }
+
+  const duplicateEbene = (code) => {
+    const src = ebenen.find(e => e.code === code)
+    if (!src) return
+    onChange([...ebenen, {
+      ...src, code: nextFreeCode(), name: src.name + ' KOPIE',
+    }])
+  }
+
+  const copyProps = (code) => {
+    const e = ebenen.find(x => x.code === code)
+    if (e) setClipboard({ color: e.color, lw: e.lw })
+  }
+
+  const pasteProps = (code) => {
+    if (!clipboard) return
+    onChange(ebenen.map(e => e.code === code ? { ...e, ...clipboard } : e))
+    setLayerStyle(code, clipboard.color, clipboard.lw)
+  }
+
+  const openContextMenu = (ev, code) => {
+    ev.preventDefault()
+    ev.stopPropagation()
+    setCtxMenu({ x: ev.clientX, y: ev.clientY, code })
+  }
+
+  const ctxItems = (code) => [
+    { label: 'Ebeneneinstellungen…',         icon: 'settings',      onClick: () => setSettingsCode(code) },
+    { divider: true },
+    { label: 'Selektion hierher übertragen', icon: 'move_down',     onClick: () => moveSelectionToEbene(code) },
+    { divider: true },
+    { label: 'Duplizieren',                 icon: 'content_copy',  onClick: () => duplicateEbene(code) },
+    { label: 'Eigenschaften kopieren',      icon: 'colorize',      onClick: () => copyProps(code) },
+    { label: 'Eigenschaften einfügen',      icon: 'format_paint',  onClick: () => pasteProps(code), disabled: !clipboard },
+    { divider: true },
+    { label: 'Löschen',                     icon: 'delete',        onClick: () => handleDelete(code), danger: true,
+                                                                   disabled: ebenen.length <= 1 },
+  ]
+
+  const actionBtns = (
+    <button className="btn-add" onClick={addNew} title="Ebene hinzufügen">
+      <Icon name="add" size={16} />
+    </button>
+  )
+
+  return (
+    <Section title="Ebenen" badge={ebenen.length} action={actionBtns}>
+      {/* Ebenenkombinationen — Label + Dropdown + Save-As-Plus */}
+      <div style={{
+        display: 'flex', flexDirection: 'column', gap: 4,
+        padding: '6px 14px',
+        background: 'var(--bg-section)',
+        borderBottom: '1px solid var(--border-light)',
+      }}>
+        <span className="label-xs">Ebenenkombination</span>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>
+          <select
+            value={activeCombName || '__custom__'}
+            onChange={(ev) => {
+              const v = ev.target.value
+              if (v === '__custom__') return
+              if (v === '__delete__') {
+                if (activeCombName && onDeleteCombination) onDeleteCombination(activeCombName)
+                return
+              }
+              if (onPickCombination) onPickCombination(v)
+            }}
+            style={{ flex: 1, minWidth: 0 }}
+            title={activeCombName ? `Aktiv: ${activeCombName}` : 'Eigene Sichtbarkeit (keine Kombination)'}
+          >
+            <option value="__custom__">{activeCombName ? activeCombName : 'Eigene'}</option>
+            {combinations.length > 0 && <option disabled>──────────</option>}
+            {combinations.map(p => (
+              <option key={p.name} value={p.name}>{p.name}</option>
+            ))}
+            {activeCombName && combinations.some(p => p.name === activeCombName) && (
+              <>
+                <option disabled>──────────</option>
+                <option value="__delete__">🗑 Aktuelle löschen</option>
+              </>
+            )}
+          </select>
+          <button
+            className="btn-icon-sm"
+            onClick={() => onSaveCurrentCombination && onSaveCurrentCombination()}
+            title="Aktuelle Sichtbarkeit als neue Kombination speichern"
+          >
+            <Icon name="add" size={14} />
+          </button>
+          <button
+            className="btn-icon-sm"
+            onClick={() => onEditCombinations && onEditCombinations()}
+            title="Alle Kombinationen bearbeiten (Dialog)"
+          >
+            <Icon name="edit" size={13} />
+          </button>
+        </div>
+      </div>
+
+      <div style={{
+        display: 'flex', flexDirection: 'column', gap: 4,
+        padding: '6px 14px',
+        background: 'var(--bg-section)',
+        borderBottom: '1px solid var(--border-light)',
+      }}>
+        <span className="label-xs">Sichtbarkeit</span>
+        <select value={mode} onChange={ev => onModeChange(ev.target.value)} style={{ width: '100%' }}>
+          {MODES.map(m => <option key={m.value} value={m.value}>{m.label}</option>)}
+        </select>
+      </div>
+
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 5,
+        padding: '2px 14px',
+        background: 'var(--bg-section)',
+        borderBottom: '1px solid var(--border)',
+      }}>
+        {/* Master-Eye: alle Ebenen sichtbar/unsichtbar */}
+        <button
+          className="btn-icon-xs"
+          onClick={() => {
+            const anyVisible = ebenen.some(e => e.visible !== false)
+            // Wenn irgendeine sichtbar -> alle aus. Wenn keine sichtbar -> alle an.
+            onChange(ebenen.map(e => ({ ...e, visible: !anyVisible })))
+            if (onUserVisibilityChange) onUserVisibilityChange()
+          }}
+          title={ebenen.every(e => e.visible !== false)
+            ? 'Alle Ebenen ausblenden'
+            : 'Alle Ebenen einblenden'}
+          style={{ width: 18, height: 18 }}
+        >
+          <Icon
+            name={ebenen.every(e => e.visible !== false) ? 'visibility' : 'visibility_off'}
+            size={12}
+          />
+        </button>
+        <SortHeader label="Cd" sortKey="code" sortBy={sortBy} sortDir={sortDir} onSort={toggleSort} style={{ width: 24 }} />
+        <div style={{ width: 12 }} />
+        <SortHeader label="Name" sortKey="name" sortBy={sortBy} sortDir={sortDir} onSort={toggleSort} style={{ flex: 1 }} />
+        <SortHeader label="Lw" sortKey="lw" sortBy={sortBy} sortDir={sortDir} onSort={toggleSort} style={{ width: 42, textAlign: 'right', display: 'block' }} />
+        {/* Master-Lock: alle Ebenen sperren/entsperren */}
+        <button
+          className="btn-icon-xs"
+          onClick={() => {
+            const anyLocked = ebenen.some(e => e.locked === true)
+            onChange(ebenen.map(e => ({ ...e, locked: !anyLocked })))
+            if (onUserVisibilityChange) onUserVisibilityChange()
+          }}
+          title={ebenen.every(e => e.locked === true)
+            ? 'Alle Ebenen entsperren'
+            : 'Alle Ebenen sperren'}
+          style={{ width: 18, height: 18 }}
+        >
+          <Icon
+            name={ebenen.every(e => e.locked === true) ? 'lock' : 'lock_open'}
+            size={11}
+          />
+        </button>
+        <div style={{ width: 18 }} />
+      </div>
+
+      {sortedEbenen.map(e => (
+        <EbeneRow
+          key={e.code}
+          e={e}
+          active={e.code === activeCode}
+          mode={mode}
+          onClick={() => onActiveChange(e.code)}
+          onContextMenu={(ev) => openContextMenu(ev, e.code)}
+          onToggleVisible={() => handleToggleVisible(e.code)}
+          onToggleLock={() => handleToggleLock(e.code)}
+          onColorChange={(c) => handleColorChange(e.code, c)}
+          onLwChange={(lw) => handleLwChange(e.code, lw)}
+          onNameChange={(n) => handleNameChange(e.code, n)}
+          onCodeChange={(c) => handleCodeChange(e.code, c)}
+          onDelete={() => handleDelete(e.code)}
+          autoEditCode={autoEdit && autoEdit.code === e.code && autoEdit.field === 'code' ? autoEdit.token : null}
+          autoEditName={autoEdit && autoEdit.code === e.code && autoEdit.field === 'name' ? autoEdit.token : null}
+        />
+      ))}
+
+      {ctxMenu && (
+        <ContextMenu
+          x={ctxMenu.x} y={ctxMenu.y}
+          items={ctxItems(ctxMenu.code)}
+          onClose={() => setCtxMenu(null)}
+        />
+      )}
+
+      {deleteTarget && (
+        <ConfirmDeleteEbene
+          ebene={ebenen.find(e => e.code === deleteTarget)}
+          otherEbenen={ebenen.filter(e => e.code !== deleteTarget)}
+          onConfirm={confirmDelete}
+          onCancel={() => setDeleteTarget(null)}
+        />
+      )}
+
+      {settingsCode && (() => {
+        const target = ebenen.find(e => e.code === settingsCode)
+        if (!target) { setSettingsCode(null); return null }
+        return (
+          <EbenenSettingsDialog
+            ebene={target}
+            hatchPatterns={hatchPatterns}
+            onSave={(updated) => {
+              // Code-Wechsel handhaben (eindeutiger key)
+              onChange(ebenen.map(e => e.code === settingsCode ? updated : e))
+              setSettingsCode(null)
+            }}
+            onClose={() => setSettingsCode(null)}
+          />
+        )
+      })()}
+    </Section>
+  )
+}
diff --git a/src/components/EbenenSettingsDialog.jsx b/src/components/EbenenSettingsDialog.jsx
new file mode 100644
index 0000000..6c6eef8
--- /dev/null
+++ b/src/components/EbenenSettingsDialog.jsx
@@ -0,0 +1,252 @@
+import { useState } from 'react'
+import Icon from './Icon'
+
+function Field({ label, hint, children }) {
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 3, padding: '5px 0' }}>
+      <span style={{ fontSize: 10, color: 'var(--text-secondary)', fontWeight: 500, letterSpacing: 0.2 }}>
+        {label}
+      </span>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>{children}</div>
+      {hint && (
+        <span style={{ fontSize: 9, color: 'var(--text-muted)', lineHeight: 1.4 }}>{hint}</span>
+      )}
+    </div>
+  )
+}
+
+function SectionLabel({ children }) {
+  return (
+    <div style={{
+      fontSize: 9, color: 'var(--text-muted)', fontWeight: 600,
+      letterSpacing: 0.5, textTransform: 'uppercase',
+      padding: '8px 0 2px',
+      borderTop: '1px solid var(--border-light)',
+      marginTop: 6,
+    }}>{children}</div>
+  )
+}
+
+export default function EbenenSettingsDialog({ ebene, hatchPatterns = ['Solid'], onSave, onClose }) {
+  const [draft, setDraft] = useState({
+    ...ebene,
+    fill: {
+      pattern:  'None',
+      source:   'layer',
+      color:    null,
+      scale:    1.0,
+      rotation: 0,
+      lw:       null,   // Stiftstaerke der Hatch in mm; null = wie Stift der Ebene
+      ...(ebene.fill || {}),
+    },
+  })
+
+  const set     = (patch) => setDraft({ ...draft, ...patch })
+  const setFill = (patch) => setDraft({ ...draft, fill: { ...draft.fill, ...patch } })
+
+  const fill          = draft.fill
+  const isFilled      = fill.pattern !== 'None'
+  const isPattern     = isFilled && fill.pattern !== 'Solid'
+  const fillFromLayer = fill.source === 'layer'
+  const previewColor  = (fillFromLayer || !fill.color) ? draft.color : fill.color
+
+  // Pattern-Optionen: None + Solid + Patterns
+  const patternOptions = [
+    'None', 'Solid',
+    ...hatchPatterns.filter(p => p !== 'Solid' && p !== 'None'),
+  ]
+
+  return (
+    <div style={{
+      position: 'absolute', inset: 0, zIndex: 150,
+      background: 'var(--bg-overlay)',
+      display: 'flex', alignItems: 'flex-start', justifyContent: 'center',
+      paddingTop: 30,
+    }}>
+      <div style={{
+        background: 'var(--bg-dialog)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+        boxShadow: 'var(--shadow-3)',
+        width: 'calc(100% - 16px)', maxWidth: 300,
+        display: 'flex', flexDirection: 'column',
+        overflow: 'hidden',
+        maxHeight: 'calc(100vh - 60px)',
+      }}>
+        {/* Header */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '10px 12px',
+          borderBottom: '1px solid var(--border)',
+        }}>
+          <Icon name="settings" size={14} style={{ color: 'var(--text-secondary)', flexShrink: 0 }} />
+          <span style={{
+            flex: 1, fontWeight: 600, fontSize: 11,
+            overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+          }}>
+            {ebene.code} — {ebene.name}
+          </span>
+          <button onClick={onClose} style={{ color: 'var(--text-muted)', fontSize: 16, padding: '0 4px', lineHeight: 1 }}>×</button>
+        </div>
+
+        {/* Body */}
+        <div style={{ padding: '6px 12px 4px', overflowY: 'auto' }}>
+          <Field label="CODE">
+            <input
+              value={draft.code}
+              onChange={(ev) => set({ code: ev.target.value })}
+              maxLength={4}
+              style={{ flex: 1, fontSize: 11, fontFamily: 'var(--font-mono)', fontWeight: 600, minWidth: 0 }}
+            />
+          </Field>
+
+          <Field label="NAME">
+            <input
+              value={draft.name}
+              onChange={(ev) => set({ name: ev.target.value })}
+              style={{ flex: 1, fontSize: 11, fontWeight: 600, minWidth: 0 }}
+            />
+          </Field>
+
+          <Field label="FARBE (Stift)">
+            <input
+              type="color"
+              value={draft.color}
+              onChange={(ev) => set({ color: ev.target.value })}
+              style={{
+                width: 32, height: 22, padding: 0,
+                border: '1px solid var(--border)', borderRadius: 'var(--r)',
+                cursor: 'pointer', background: 'transparent',
+              }}
+            />
+            <input
+              value={draft.color}
+              onChange={(ev) => set({ color: ev.target.value })}
+              style={{ flex: 1, fontSize: 10, fontFamily: 'var(--font-mono)', minWidth: 0 }}
+            />
+          </Field>
+
+          <Field label="STRICHSTÄRKE (mm)">
+            <input
+              type="number" step="0.01" min="0.01" max="2.0"
+              value={draft.lw}
+              onChange={(ev) => set({ lw: parseFloat(ev.target.value) || draft.lw })}
+              style={{ flex: 1, fontSize: 11, textAlign: 'right', minWidth: 0 }}
+            />
+          </Field>
+
+          <SectionLabel>Schraffur „Nach Ebene"</SectionLabel>
+          <span style={{ fontSize: 9, color: 'var(--text-muted)', lineHeight: 1.4, display: 'block', marginBottom: 4 }}>
+            Wird auf neue geschlossene Kurven angewandt die auf dieser Ebene gezeichnet werden.
+          </span>
+
+          <Field label="PATTERN">
+            <select
+              value={fill.pattern}
+              onChange={(ev) => setFill({ pattern: ev.target.value })}
+              style={{ flex: 1, fontSize: 11, minWidth: 0 }}
+            >
+              {patternOptions.map(p => (
+                <option key={p} value={p}>{p}</option>
+              ))}
+            </select>
+          </Field>
+
+          {isFilled && (
+            <>
+              <Field label="FARBE-QUELLE">
+                <select
+                  value={fill.source}
+                  onChange={(ev) => setFill({ source: ev.target.value })}
+                  style={{ flex: 1, fontSize: 11, minWidth: 0 }}
+                >
+                  <option value="layer">Nach Stift (Layerfarbe)</option>
+                  <option value="object">Eigene Farbe</option>
+                </select>
+              </Field>
+
+              <Field label="VORSCHAU / FARBE">
+                <input
+                  type="color"
+                  value={previewColor}
+                  disabled={fillFromLayer}
+                  onChange={(ev) => setFill({ color: ev.target.value, source: 'object' })}
+                  style={{
+                    width: 32, height: 22, padding: 0,
+                    border: '1px solid var(--border)', borderRadius: 'var(--r)',
+                    cursor: fillFromLayer ? 'default' : 'pointer',
+                    background: 'transparent',
+                    opacity: fillFromLayer ? 0.6 : 1,
+                  }}
+                />
+                <span style={{ fontSize: 10, fontFamily: 'var(--font-mono)', color: 'var(--text-muted)' }}>
+                  {previewColor}
+                </span>
+              </Field>
+
+              {isPattern && (
+                <>
+                  <Field label="SKALIERUNG">
+                    <input
+                      type="number" step="0.05" min="0.001"
+                      value={fill.scale}
+                      onChange={(ev) => setFill({ scale: parseFloat(ev.target.value) || 1.0 })}
+                      style={{ flex: 1, fontSize: 11, textAlign: 'right', minWidth: 0 }}
+                    />
+                  </Field>
+
+                  <Field label="DREHUNG (°)">
+                    <input
+                      type="number" step="5"
+                      value={fill.rotation}
+                      onChange={(ev) => setFill({ rotation: parseFloat(ev.target.value) || 0 })}
+                      style={{ flex: 1, fontSize: 11, textAlign: 'right', minWidth: 0 }}
+                    />
+                  </Field>
+                </>
+              )}
+
+              <Field
+                label="STIFTSTÄRKE (mm)"
+                hint="Leer = wie Stift der Ebene. Eigener Wert ueberschreibt die Strichstaerke der Hatch-Linien."
+              >
+                <input
+                  type="number" step="0.01" min="0"
+                  value={fill.lw == null ? '' : fill.lw}
+                  placeholder="—"
+                  onChange={(ev) => {
+                    const v = ev.target.value
+                    if (v === '' || v === null) setFill({ lw: null })
+                    else {
+                      const f = parseFloat(v)
+                      if (!isNaN(f) && f >= 0) setFill({ lw: f })
+                    }
+                  }}
+                  style={{ flex: 1, fontSize: 11, textAlign: 'right', minWidth: 0 }}
+                />
+                <button
+                  className="btn-text"
+                  style={{ fontSize: 10, padding: '2px 6px' }}
+                  onClick={() => setFill({ lw: null })}
+                  title="Auf 'wie Stift der Ebene' zuruecksetzen"
+                >Default</button>
+              </Field>
+            </>
+          )}
+        </div>
+
+        {/* Footer */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '8px 12px',
+          borderTop: '1px solid var(--border)',
+          background: 'var(--bg-section)',
+        }}>
+          <div style={{ flex: 1 }} />
+          <button className="btn-text" onClick={onClose}>Abbrechen</button>
+          <button className="btn-contained" onClick={() => onSave(draft)}>Übernehmen</button>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/GeschossDialog.jsx b/src/components/GeschossDialog.jsx
new file mode 100644
index 0000000..113cd68
--- /dev/null
+++ b/src/components/GeschossDialog.jsx
@@ -0,0 +1,195 @@
+import { useState } from 'react'
+import Icon from './Icon'
+
+export default function GeschossDialog({ zeichnungsebenen, recalcOkff, onSave, onClose }) {
+  const [draft, setDraft] = useState(zeichnungsebenen.map(z => ({ ...z })))
+
+  const update = (i, field, val) => {
+    const next = draft.map((z, idx) => idx === i ? { ...z, [field]: val } : z)
+    setDraft(recalcOkff(next))
+  }
+
+  const toggleGeschoss = (i) => {
+    const next = draft.map((z, idx) => {
+      if (idx !== i) return z
+      if (z.isGeschoss) {
+        return { ...z, isGeschoss: false, hoehe: undefined, schnitthoehe: undefined, okff: undefined }
+      } else {
+        return { ...z, isGeschoss: true, hoehe: z.hoehe ?? 3.00, schnitthoehe: z.schnitthoehe ?? 1.00 }
+      }
+    })
+    setDraft(recalcOkff(next))
+  }
+
+  const add = (isGeschoss) => {
+    const n = draft.length
+    const newZ = isGeschoss
+      ? { id: `z_${Date.now()}`, name: `${n}OG`, isGeschoss: true, hoehe: 3.00, schnitthoehe: 1.00, visible: true }
+      : { id: `z_${Date.now()}`, name: `Neu ${n + 1}`,    isGeschoss: false, visible: true }
+    setDraft(recalcOkff([...draft, newZ]))
+  }
+
+  const remove = (i) => {
+    if (draft.length <= 1) return
+    setDraft(recalcOkff(draft.filter((_, idx) => idx !== i)))
+  }
+
+  const move = (i, dir) => {
+    const next = [...draft]
+    const t = i + dir
+    if (t < 0 || t >= next.length) return
+    ;[next[i], next[t]] = [next[t], next[i]]
+    setDraft(recalcOkff(next))
+  }
+
+  const gesamthoehe = draft
+    .filter(z => z.isGeschoss)
+    .reduce((s, z) => s + (z.hoehe ?? 0), 0)
+
+  const col = {
+    move:    { width: 28, flexShrink: 0 },
+    geschoss:{ width: 24, flexShrink: 0 },
+    name:    { flex: 1,   minWidth: 60 },
+    okff:    { width: 50, flexShrink: 0 },
+    hoehe:   { width: 64, flexShrink: 0 },
+    schnitt: { width: 64, flexShrink: 0 },
+    del:     { width: 22, flexShrink: 0 },
+  }
+
+  return (
+    <div style={{
+      position: 'absolute', inset: 0, zIndex: 100,
+      background: 'var(--bg-overlay)',
+      display: 'flex', alignItems: 'flex-start', justifyContent: 'center',
+      paddingTop: 40,
+    }}>
+      <div style={{
+        background: 'var(--bg-dialog)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+        width: 'calc(100% - 24px)',
+        boxShadow: 'var(--shadow)',
+        display: 'flex', flexDirection: 'column',
+        maxHeight: 'calc(100vh - 80px)',
+        overflow: 'hidden',
+      }}>
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 8,
+          padding: '10px 14px', borderBottom: '1px solid var(--border)', flexShrink: 0,
+        }}>
+          <span style={{ flex: 1, fontWeight: 600, fontSize: 12, color: 'var(--text-primary)' }}>
+            Zeichnungsebenen
+          </span>
+          <span style={{ fontSize: 10, color: 'var(--text-muted)' }}>
+            Gebäude {gesamthoehe.toFixed(2)} m
+          </span>
+          <button onClick={onClose} style={{ color: 'var(--text-muted)', fontSize: 16, padding: '0 4px' }}>×</button>
+        </div>
+
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 4,
+          padding: '4px 14px', background: 'var(--bg-section)',
+          borderBottom: '1px solid var(--border)', flexShrink: 0,
+        }}>
+          <div style={col.move} />
+          <span className="label-xs" style={col.geschoss}>G</span>
+          <span className="label-xs" style={col.name}>Name</span>
+          <span className="label-xs" style={col.okff}>OKFF</span>
+          <span className="label-xs" style={col.hoehe}>Höhe</span>
+          <span className="label-xs" style={col.schnitt}>Schnitt h</span>
+          <div style={col.del} />
+        </div>
+
+        <div style={{ overflowY: 'auto', flex: 1 }}>
+          {draft.map((z, i) => (
+            <div key={z.id} style={{
+              display: 'flex', alignItems: 'center', gap: 4,
+              padding: '5px 14px',
+              borderBottom: '1px solid var(--border-light)',
+              background: i % 2 === 0 ? 'var(--bg-item)' : 'var(--bg-dialog)',
+            }}>
+              <div style={{ ...col.move, display: 'flex', flexDirection: 'column', gap: 0 }}>
+                <button className="btn-step" onClick={() => move(i, -1)} disabled={i === 0}>
+                  <Icon name="arrow_drop_up" size={14} />
+                </button>
+                <button className="btn-step" onClick={() => move(i, 1)}  disabled={i === draft.length - 1}>
+                  <Icon name="arrow_drop_down" size={14} />
+                </button>
+              </div>
+
+              <div style={col.geschoss}>
+                <input
+                  type="checkbox"
+                  checked={!!z.isGeschoss}
+                  onChange={() => toggleGeschoss(i)}
+                  title="Ist ein Geschoss"
+                  style={{ cursor: 'pointer' }}
+                />
+              </div>
+
+              <input
+                value={z.name}
+                onChange={ev => update(i, 'name', ev.target.value)}
+                style={{ ...col.name, fontWeight: 600, fontSize: 11 }}
+              />
+
+              <div style={{ ...col.okff, color: z.isGeschoss ? 'var(--text-muted)' : 'transparent', fontSize: 11, fontFamily: 'var(--font-mono)', textAlign: 'right' }}>
+                {z.isGeschoss ? `+${(z.okff ?? 0).toFixed(2)}` : '—'}
+              </div>
+
+              <div style={{ ...col.hoehe, display: 'flex', alignItems: 'center', gap: 2 }}>
+                {z.isGeschoss ? (
+                  <>
+                    <input type="number" step="0.05" min="0.5" max="20"
+                      value={z.hoehe ?? 3.0}
+                      onChange={ev => update(i, 'hoehe', parseFloat(ev.target.value) || z.hoehe || 3.0)}
+                      style={{ width: 44, textAlign: 'right' }}
+                    />
+                    <span style={{ color: 'var(--text-muted)', fontSize: 10 }}>m</span>
+                  </>
+                ) : (
+                  <span style={{ color: 'var(--text-muted)', fontSize: 11 }}>—</span>
+                )}
+              </div>
+
+              <div style={{ ...col.schnitt, display: 'flex', alignItems: 'center', gap: 2 }}>
+                {z.isGeschoss ? (
+                  <>
+                    <input type="number" step="0.05" min="0.1"
+                      value={z.schnitthoehe ?? 1.0}
+                      onChange={ev => update(i, 'schnitthoehe', parseFloat(ev.target.value) || 1.0)}
+                      style={{ width: 44, textAlign: 'right' }}
+                    />
+                    <span style={{ color: 'var(--text-muted)', fontSize: 10 }}>m</span>
+                  </>
+                ) : (
+                  <span style={{ color: 'var(--text-muted)', fontSize: 11 }}>—</span>
+                )}
+              </div>
+
+              <div style={col.del}>
+                <button className="btn-icon-sm" onClick={() => remove(i)} title="Löschen">
+                  <Icon name="close" size={14} />
+                </button>
+              </div>
+            </div>
+          ))}
+        </div>
+
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '10px 14px', borderTop: '1px solid var(--border)',
+          background: 'var(--bg-section)', flexShrink: 0,
+        }}>
+          <button className="btn-outlined" onClick={() => add(true)} style={{
+            color: 'var(--accent-light)', borderColor: 'var(--accent-border)',
+          }}>+ Geschoss</button>
+          <button className="btn-outlined" onClick={() => add(false)}>+ Zeichnung</button>
+          <div style={{ flex: 1 }} />
+          <button className="btn-text" onClick={onClose}>Abbrechen</button>
+          <button className="btn-contained" onClick={() => onSave(draft)}>Übernehmen</button>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/GeschossManager.jsx b/src/components/GeschossManager.jsx
new file mode 100644
index 0000000..a435b23
--- /dev/null
+++ b/src/components/GeschossManager.jsx
@@ -0,0 +1,187 @@
+import { useState } from 'react'
+import Section from './Section'
+import Icon from './Icon'
+import GeschossDialog from './GeschossDialog'
+import GeschossSettingsDialog from './GeschossSettingsDialog'
+
+function GeschossBadge({ name }) {
+  return <span className="chip chip-info">{name}</span>
+}
+
+function ZeichnungsebeneRow({ z, active, mode, onClick, onToggleVisible, onSettings }) {
+  // Eye-State auch fuer die aktive Zeichnungsebene anzeigen (User-Intention)
+  const eyeShown = mode !== 'active'
+  const isGeschoss = !!z.isGeschoss
+  return (
+    <div
+      onClick={onClick}
+      style={{
+        display: 'flex', alignItems: 'center', gap: 8,
+        padding: '4px 12px',
+        margin: active ? '1px 6px' : '0',
+        background: active ? 'var(--active-dim)' : 'var(--bg-item)',
+        // Pill-Form fuer die aktive Zeichnungsebene
+        borderRadius: active ? 999 : 0,
+        borderLeft: active ? 'none' : '3px solid transparent',
+        borderBottom: active ? 'none' : '1px solid var(--border-light)',
+        boxShadow: active ? 'inset 0 0 0 1px var(--active-light)' : 'none',
+        cursor: 'pointer',
+        userSelect: 'none',
+        opacity: (!active && z.visible === false && mode !== 'all') ? 0.45 : 1,
+      }}
+    >
+      <span style={{
+        fontWeight: active ? 700 : 500,
+        fontSize: 12,
+        color: active ? 'var(--active-light)' : 'var(--text-label)',
+        flex: 1,
+        overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+      }}>{z.name}</span>
+
+      {isGeschoss && (
+        <span style={{ fontSize: 10, color: 'var(--text-muted)', fontFamily: 'var(--font-mono)' }}>
+          +{(z.okff ?? 0).toFixed(2)}
+        </span>
+      )}
+
+      {isGeschoss && <GeschossBadge name={z.name} />}
+
+      {isGeschoss && z.hasClipping && (
+        <Icon name="content_cut" size={12} style={{ color: 'var(--accent)', flexShrink: 0 }} title="Clipping Plane aktiv" />
+      )}
+
+      {eyeShown ? (
+        <button
+          className={`btn-icon-sm ${z.visible !== false ? 'is-on' : ''}`}
+          onClick={(ev) => { ev.stopPropagation(); onToggleVisible() }}
+          title={
+            active
+              ? (z.visible !== false
+                  ? 'Normalerweise sichtbar (aktive Zeichnungsebene wird trotzdem gezeigt)'
+                  : 'Normalerweise ausgeblendet — wird nur sichtbar weil aktiv')
+              : (z.visible !== false ? 'Ausblenden' : 'Einblenden')
+          }
+        ><Icon name={z.visible !== false ? 'visibility' : 'visibility_off'} size={14} /></button>
+      ) : (
+        <span style={{ width: 18, flexShrink: 0 }} />
+      )}
+
+      <button
+        className="btn-icon-xs"
+        onClick={(ev) => { ev.stopPropagation(); onSettings() }}
+        title="Einstellungen"
+      ><Icon name="settings" size={12} /></button>
+    </div>
+  )
+}
+
+const MODES = [
+  { value: 'all',         label: 'Alle anzeigen' },
+  { value: 'active',      label: 'Nur aktive' },
+  { value: 'grey',        label: 'Andere grau' },
+  { value: 'grey_locked', label: 'Andere grau & gesperrt' },
+]
+
+export default function GeschossManager({
+  zeichnungsebenen, activeId, onActiveChange, onChange, recalcOkff,
+  mode, onModeChange,
+}) {
+  const [dialogOpen, setDialogOpen] = useState(false)
+  const [settingsFor, setSettingsFor] = useState(null)  // Geschoss-Objekt oder null
+
+  const sorted = [...zeichnungsebenen].reverse()
+  const gesamthoehe = zeichnungsebenen
+    .filter(z => z.isGeschoss)
+    .reduce((s, z) => s + (z.hoehe ?? 0), 0)
+
+  const addQuick = () => {
+    const newZ = {
+      id: `z_${Date.now()}`,
+      name: `Neu ${zeichnungsebenen.length + 1}`,
+      isGeschoss: false,
+      visible: true,
+    }
+    onChange([...zeichnungsebenen, newZ])
+  }
+
+  const actions = (
+    <div style={{ display: 'flex', gap: 6, alignItems: 'center' }}>
+      <button className="btn-add" onClick={addQuick} title="Zeichnungsebene hinzufügen">
+        <Icon name="add" size={16} />
+      </button>
+      <button className="btn-icon-tonal" onClick={() => setDialogOpen(true)} title="Bearbeiten">
+        <Icon name="edit" size={14} />
+      </button>
+    </div>
+  )
+
+  const toggleVisible = (id) => {
+    onChange(zeichnungsebenen.map(z => z.id === id ? { ...z, visible: !(z.visible !== false) } : z))
+  }
+
+  return (
+    <>
+      <Section title="Zeichnungsebenen" badge={zeichnungsebenen.length} action={actions}>
+        <div style={{
+          display: 'flex', flexDirection: 'column', gap: 4,
+          padding: '6px 14px',
+          background: 'var(--bg-section)',
+          borderBottom: '1px solid var(--border-light)',
+        }}>
+          <span className="label-xs">Sichtbarkeit</span>
+          <select value={mode} onChange={ev => onModeChange(ev.target.value)} style={{ width: '100%' }}>
+            {MODES.map(m => (
+              <option key={m.value} value={m.value}>{m.label}</option>
+            ))}
+          </select>
+        </div>
+
+        <div style={{
+          display: 'flex', justifyContent: 'space-between', alignItems: 'center',
+          padding: '3px 14px',
+          background: 'var(--bg-section)',
+          borderBottom: '1px solid var(--border-light)',
+        }}>
+          <span className="label-xs">Gebäudehöhe</span>
+          <span style={{ fontSize: 11, fontFamily: 'var(--font-mono)', color: 'var(--text-secondary)' }}>
+            {gesamthoehe.toFixed(2)} m
+          </span>
+        </div>
+
+        <div>
+          {sorted.map(z => (
+            <ZeichnungsebeneRow
+              key={z.id}
+              z={z}
+              active={z.id === activeId}
+              mode={mode}
+              onClick={() => onActiveChange(z.id)}
+              onToggleVisible={() => toggleVisible(z.id)}
+              onSettings={() => setSettingsFor(z)}
+            />
+          ))}
+        </div>
+      </Section>
+
+      {dialogOpen && (
+        <GeschossDialog
+          zeichnungsebenen={zeichnungsebenen}
+          recalcOkff={recalcOkff}
+          onSave={(updated) => { onChange(updated); setDialogOpen(false) }}
+          onClose={() => setDialogOpen(false)}
+        />
+      )}
+
+      {settingsFor && (
+        <GeschossSettingsDialog
+          geschoss={settingsFor}
+          onSave={(updated) => {
+            onChange(zeichnungsebenen.map(z => z.id === updated.id ? updated : z))
+            setSettingsFor(null)
+          }}
+          onClose={() => setSettingsFor(null)}
+        />
+      )}
+    </>
+  )
+}
diff --git a/src/components/GeschossSettingsDialog.jsx b/src/components/GeschossSettingsDialog.jsx
new file mode 100644
index 0000000..8a72ddd
--- /dev/null
+++ b/src/components/GeschossSettingsDialog.jsx
@@ -0,0 +1,150 @@
+import { useState } from 'react'
+import Icon from './Icon'
+
+/** Vertikales Feld-Layout: Label oben, Input darunter — passt in schmale Panels. */
+function Field({ label, hint, children }) {
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 3, padding: '5px 0' }}>
+      <span style={{ fontSize: 10, color: 'var(--text-secondary)', fontWeight: 500, letterSpacing: 0.2 }}>
+        {label}
+      </span>
+      <div style={{ display: 'flex', alignItems: 'center', gap: 6 }}>{children}</div>
+      {hint && (
+        <span style={{ fontSize: 9, color: 'var(--text-muted)', lineHeight: 1.4 }}>
+          {hint}
+        </span>
+      )}
+    </div>
+  )
+}
+
+/** Toggle-Reihe: Checkbox + Label inline, Hint darunter wenn vorhanden. */
+function Toggle({ label, checked, onChange, hint }) {
+  return (
+    <div style={{ display: 'flex', flexDirection: 'column', gap: 2, padding: '5px 0' }}>
+      <label style={{ display: 'flex', alignItems: 'center', gap: 8, cursor: 'pointer' }}>
+        <input type="checkbox" checked={checked} onChange={(ev) => onChange(ev.target.checked)} />
+        <span style={{ fontSize: 11, color: 'var(--text-primary)' }}>{label}</span>
+      </label>
+      {hint && (
+        <span style={{ fontSize: 9, color: 'var(--text-muted)', lineHeight: 1.4, marginLeft: 22 }}>
+          {hint}
+        </span>
+      )}
+    </div>
+  )
+}
+
+export default function GeschossSettingsDialog({ geschoss, onSave, onClose }) {
+  const [draft, setDraft] = useState({ ...geschoss })
+  const set = (patch) => setDraft({ ...draft, ...patch })
+
+  const isG     = !!draft.isGeschoss
+  const hoehe   = draft.hoehe ?? 3.0
+  const schnitt = draft.schnitthoehe ?? 1.0
+  const hasClip = !!draft.hasClipping
+  const okff    = draft.okff ?? 0
+  const clipZ   = (okff + schnitt).toFixed(2)
+
+  return (
+    <div style={{
+      position: 'absolute', inset: 0, zIndex: 150,
+      background: 'var(--bg-overlay)',
+      display: 'flex', alignItems: 'flex-start', justifyContent: 'center',
+      paddingTop: 30,
+    }}>
+      <div style={{
+        background: 'var(--bg-dialog)',
+        border: '1px solid var(--border)',
+        borderRadius: 'var(--r-lg)',
+        boxShadow: 'var(--shadow-3)',
+        width: 'calc(100% - 16px)', maxWidth: 280,
+        display: 'flex', flexDirection: 'column',
+        overflow: 'hidden',
+      }}>
+        {/* Header */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '10px 12px',
+          borderBottom: '1px solid var(--border)',
+        }}>
+          <Icon name="settings" size={14} style={{ color: 'var(--text-secondary)', flexShrink: 0 }} />
+          <span style={{
+            flex: 1, fontWeight: 600, fontSize: 11,
+            overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap',
+          }}>
+            {geschoss.name}
+          </span>
+          <button onClick={onClose} style={{ color: 'var(--text-muted)', fontSize: 16, padding: '0 4px', lineHeight: 1 }}>×</button>
+        </div>
+
+        {/* Body */}
+        <div style={{ padding: '6px 12px 4px' }}>
+          <Field label="NAME">
+            <input
+              value={draft.name}
+              onChange={(ev) => set({ name: ev.target.value })}
+              style={{ flex: 1, fontSize: 11, fontWeight: 600, minWidth: 0 }}
+            />
+          </Field>
+
+          <Toggle
+            label="Ist Geschoss"
+            checked={isG}
+            onChange={(v) => set({ isGeschoss: v })}
+            hint={isG ? 'Höhe & Clipping verfügbar' : 'reines Zeichenblatt'}
+          />
+
+          {isG && (
+            <>
+              <div style={{ height: 1, background: 'var(--border-light)', margin: '6px 0' }} />
+
+              <Field label="HÖHE (m)">
+                <input
+                  type="number" step="0.05" min="0.5" max="30"
+                  value={hoehe}
+                  onChange={(ev) => set({ hoehe: parseFloat(ev.target.value) || hoehe })}
+                  style={{ flex: 1, fontSize: 11, textAlign: 'right', minWidth: 0 }}
+                />
+              </Field>
+
+              <Field label="SCHNITTHÖHE (m)" hint="über Geschossboden">
+                <input
+                  type="number" step="0.05" min="0.1"
+                  value={schnitt}
+                  onChange={(ev) => set({ schnitthoehe: parseFloat(ev.target.value) || 1.0 })}
+                  style={{ flex: 1, fontSize: 11, textAlign: 'right', minWidth: 0 }}
+                />
+              </Field>
+
+              <div style={{ height: 1, background: 'var(--border-light)', margin: '6px 0' }} />
+
+              <Toggle
+                label="Clipping Plane"
+                checked={hasClip}
+                onChange={(v) => set({ hasClipping: v })}
+                hint={
+                  hasClip
+                    ? `Horizontaler Schnitt bei +${clipZ}m (OKFF + Schnitthöhe). Sichtbar in der Top-Ansicht wenn dieses Geschoss aktiv ist.`
+                    : 'aus'
+                }
+              />
+            </>
+          )}
+        </div>
+
+        {/* Footer */}
+        <div style={{
+          display: 'flex', alignItems: 'center', gap: 6,
+          padding: '8px 12px',
+          borderTop: '1px solid var(--border)',
+          background: 'var(--bg-section)',
+        }}>
+          <div style={{ flex: 1 }} />
+          <button className="btn-text" onClick={onClose}>Abbrechen</button>
+          <button className="btn-contained" onClick={() => onSave(draft)}>Übernehmen</button>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/src/components/Icon.jsx b/src/components/Icon.jsx
new file mode 100644
index 0000000..367c0a2
--- /dev/null
+++ b/src/components/Icon.jsx
@@ -0,0 +1,13 @@
+export default function Icon({ name, size = 18, fill = 0, weight = 400, style }) {
+  return (
+    <span
+      className="material-symbols-outlined"
+      style={{
+        fontSize: size,
+        lineHeight: 1,
+        fontVariationSettings: `'FILL' ${fill}, 'wght' ${weight}, 'opsz' 20`,
+        ...style,
+      }}
+    >{name}</span>
+  )
+}
diff --git a/src/components/Section.jsx b/src/components/Section.jsx
new file mode 100644
index 0000000..4120474
--- /dev/null
+++ b/src/components/Section.jsx
@@ -0,0 +1,41 @@
+import { useState } from 'react'
+import Icon from './Icon'
+
+export default function Section({ title, badge, action, defaultOpen = true, children }) {
+  const [open, setOpen] = useState(defaultOpen)
+
+  return (
+    <div>
+      <div
+        onClick={() => setOpen(o => !o)}
+        style={{
+          display: 'flex',
+          alignItems: 'center',
+          gap: 6,
+          padding: '6px 14px 4px',
+          cursor: 'pointer',
+          userSelect: 'none',
+        }}
+      >
+        <span style={{
+          transform: open ? 'rotate(0deg)' : 'rotate(-90deg)',
+          transition: 'transform 0.2s cubic-bezier(0.4, 0, 0.2, 1)',
+          color: 'var(--text-muted)',
+          display: 'inline-flex',
+          marginLeft: -6,
+        }}>
+          <Icon name="arrow_drop_down" size={18} />
+        </span>
+        <span style={{
+          fontSize: 11, fontWeight: 500,
+          color: 'var(--text-primary)',
+          letterSpacing: '0.02em',
+        }}>{title}</span>
+        {badge != null && <span className="chip" style={{ fontSize: 8 }}>{badge}</span>}
+        <div style={{ flex: 1, height: 1, background: 'var(--border)', marginLeft: 4 }} />
+        {action && <div onClick={e => e.stopPropagation()}>{action}</div>}
+      </div>
+      {open && children}
+    </div>
+  )
+}
diff --git a/src/index.css b/src/index.css
new file mode 100644
index 0000000..998b49b
--- /dev/null
+++ b/src/index.css
@@ -0,0 +1,426 @@
+@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
+@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&display=swap');
+@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200');
+
+.material-symbols-outlined {
+  font-family: 'Material Symbols Outlined';
+  font-weight: normal;
+  font-style: normal;
+  display: inline-block;
+  line-height: 1;
+  text-transform: none;
+  letter-spacing: normal;
+  word-wrap: normal;
+  white-space: nowrap;
+  direction: ltr;
+  -webkit-font-feature-settings: 'liga';
+  -webkit-font-smoothing: antialiased;
+  user-select: none;
+  font-variation-settings: 'FILL' 0, 'wght' 400, 'opsz' 20;
+}
+
+:root {
+  /* === LIGHT MODE (RAPPORT cream + olive + deep green) === */
+  --bg-base:       #e0dbd4;
+  --bg-panel:      #e0dbd4;
+  --bg-section:    #e0dbd4;
+  --bg-item:       #e0dbd4;
+  --bg-item-hover: #d4cfc8;
+  --bg-input:      #ece8e2;
+  --bg-dialog:     #e4dfd7;
+  --bg-overlay:    rgba(26, 26, 24, 0.36);
+
+  --border:        #c8c2ba;
+  --border-light:  #d4cfc8;
+  --border-focus:  #2f5d54;
+
+  --text-primary:  #1a1a18;
+  --text-secondary:#555550;
+  --text-muted:    #8a8580;
+  --text-label:    #1a1a18;
+
+  /* Petrol-Gruen (von Rapport-HTML uebernommen) */
+  --accent:        #2f5d54;
+  --accent-light:  #4a8a7c;
+  --accent-dim:    #e6efed;
+  --accent-border: rgba(47, 93, 84, 0.35);
+
+  /* Active-Marker (aktives Geschoss / aktive Ebene) — saturiertes Petrol */
+  --active:        #1a655a;
+  --active-light:  #2f8275;
+  --active-dim:    rgba(26, 101, 90, 0.10);
+
+  --warn:          #b5621e;
+  --warn-light:    #d47a30;
+  --warn-dim:      #fdf0e8;
+
+  --danger:        #8a1a1a;
+  --danger-light:  #b03030;
+
+  --overlay-hover: rgba(26, 26, 24, 0.05);
+  --overlay-active:rgba(26, 26, 24, 0.10);
+
+  --r:             4px;
+  --r-lg:          8px;
+  --shadow-1:      0 1px 2px rgba(26,26,24,0.08);
+  --shadow-2:      0 2px 8px rgba(26,26,24,0.12);
+  --shadow-3:      0 6px 24px rgba(26,26,24,0.18);
+
+  --select-arrow:  url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M0 0l5 6 5-6z' fill='%23555550'/></svg>");
+
+  --font:          'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
+  --font-mono:     'DM Mono', 'SF Mono', monospace;
+}
+
+/* === DARK MODE (Rhino-tonig) === */
+@media (prefers-color-scheme: dark) {
+  :root {
+    --bg-base:       #2a2a2a;
+    --bg-panel:      #2a2a2a;
+    --bg-section:    #2a2a2a;
+    --bg-item:       #2a2a2a;
+    --bg-item-hover: #353535;
+    --bg-input:      #1f1f1f;
+    --bg-dialog:     #2c2c2c;
+    --bg-overlay:    rgba(0,0,0,0.55);
+
+    --border:        #4a4a4a;
+    --border-light:  #3d3d3d;
+    --border-focus:  #5fa896;
+
+    --text-primary:  #e8e8e8;
+    --text-secondary:#a8a8a8;
+    --text-muted:    #707070;
+    --text-label:    #c8c8c8;
+
+    /* Petrol-Gruen (von Rapport-HTML uebernommen) */
+    --accent:        #5fa896;
+    --accent-light:  #6db5a4;
+    --accent-dim:    rgba(95, 168, 150, 0.15);
+    --accent-border: rgba(95, 168, 150, 0.4);
+
+    /* Active-Marker — saturiertes Petrol, distinct vom accent */
+    --active:        #7dc8b8;
+    --active-light:  #8ad1bf;
+    --active-dim:    rgba(125, 200, 184, 0.16);
+
+    --warn:          #d48030;
+    --warn-light:    #e09040;
+    --warn-dim:      rgba(212, 128, 48, 0.18);
+
+    --danger:        #c85050;
+    --danger-light:  #d86060;
+
+    --overlay-hover: rgba(255,255,255,0.06);
+    --overlay-active:rgba(255,255,255,0.10);
+
+    --shadow-1:      0 1px 2px rgba(0,0,0,0.30);
+    --shadow-2:      0 2px 8px rgba(0,0,0,0.40);
+    --shadow-3:      0 6px 24px rgba(0,0,0,0.55);
+
+    --select-arrow:  url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'><path d='M0 0l5 6 5-6z' fill='%23a8a8a8'/></svg>");
+  }
+}
+
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+body {
+  font-family: var(--font);
+  font-size: 12px;
+  background: var(--bg-base);
+  color: var(--text-primary);
+  -webkit-font-smoothing: antialiased;
+  letter-spacing: 0.01em;
+}
+
+#root { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
+
+button {
+  font-family: var(--font);
+  cursor: pointer;
+  border: none;
+  outline: none;
+  background: none;
+  color: inherit;
+  position: relative;
+  transition:
+    background 0.18s cubic-bezier(0.4, 0, 0.2, 1),
+    color 0.14s cubic-bezier(0.4, 0, 0.2, 1),
+    border-color 0.18s cubic-bezier(0.4, 0, 0.2, 1),
+    box-shadow 0.22s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+input, select {
+  font-family: var(--font-mono);
+  font-size: 11px;
+  background: var(--bg-input);
+  color: var(--text-primary);
+  border: 1px solid var(--border);
+  border-radius: var(--r);
+  padding: 5px 8px;
+  outline: none;
+  transition: border-color 0.16s, box-shadow 0.16s;
+}
+input:hover { border-color: var(--text-muted); }
+input:focus, select:focus {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 2px var(--accent-dim);
+}
+input[type="number"]::-webkit-inner-spin-button { opacity: 0.3; }
+
+/* Pill-shaped select */
+select {
+  appearance: none;
+  -webkit-appearance: none;
+  background-color: var(--bg-item);
+  background-image: var(--select-arrow);
+  background-repeat: no-repeat;
+  background-position: right 10px center;
+  padding: 5px 26px 5px 14px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+  font-family: var(--font);
+  font-weight: 500;
+  font-size: 10px;
+  letter-spacing: 0.04em;
+  cursor: pointer;
+  color: var(--text-primary);
+}
+select:hover {
+  background-color: var(--bg-item-hover);
+  border-color: var(--text-muted);
+}
+
+/* Utility */
+.label-xs {
+  font-size: 10px;
+  font-weight: 600;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  color: var(--text-muted);
+}
+
+/* --- Buttons --- */
+
+.btn-outlined {
+  font-size: 10px;
+  font-weight: 500;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  padding: 4px 12px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+  background: var(--bg-item);
+  color: var(--text-secondary);
+  height: 26px;
+  display: inline-flex; align-items: center; justify-content: center;
+  gap: 4px;
+}
+.btn-outlined:hover {
+  background: var(--bg-item-hover);
+  border-color: var(--text-secondary);
+  color: var(--text-primary);
+}
+.btn-outlined:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.btn-contained {
+  font-size: 10px;
+  font-weight: 500;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  padding: 5px 16px;
+  border-radius: 999px;
+  border: none;
+  background: var(--accent);
+  color: #fff;
+  box-shadow: var(--shadow-1);
+  height: 28px;
+  display: inline-flex; align-items: center; justify-content: center;
+  gap: 4px;
+}
+.btn-contained:hover {
+  background: var(--accent-light);
+  box-shadow: var(--shadow-2);
+}
+
+.btn-text {
+  font-size: 10px;
+  font-weight: 500;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  padding: 5px 12px;
+  border-radius: 999px;
+  background: transparent;
+  color: var(--text-secondary);
+  height: 28px;
+  display: inline-flex; align-items: center; justify-content: center;
+}
+.btn-text:hover {
+  background: var(--overlay-hover);
+  color: var(--text-primary);
+}
+
+/* Icon button (circular hover) */
+.btn-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 26px;
+  height: 26px;
+  border-radius: 50%;
+  background: transparent;
+  color: var(--text-secondary);
+  font-size: 12px;
+  flex-shrink: 0;
+}
+.btn-icon:hover {
+  background: var(--overlay-hover);
+  color: var(--text-primary);
+}
+.btn-icon:active {
+  background: var(--overlay-active);
+}
+
+.btn-icon-sm {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 22px;
+  height: 22px;
+  border-radius: 50%;
+  background: transparent;
+  color: var(--text-muted);
+  flex-shrink: 0;
+}
+.btn-icon-sm:hover {
+  background: var(--overlay-hover);
+  color: var(--text-primary);
+}
+.btn-icon-sm.is-on {
+  color: var(--text-primary);
+}
+
+.btn-icon-xs {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 18px;
+  height: 18px;
+  border-radius: 50%;
+  background: transparent;
+  color: var(--text-muted);
+  flex-shrink: 0;
+}
+.btn-icon-xs:hover {
+  background: var(--overlay-hover);
+  color: var(--text-primary);
+}
+
+/* Icon button — danger variant */
+.btn-icon-danger {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 26px;
+  height: 26px;
+  border-radius: 50%;
+  background: transparent;
+  color: var(--danger);
+  flex-shrink: 0;
+}
+.btn-icon-danger:hover {
+  background: var(--danger-light);
+  color: #fff;
+}
+.btn-icon-danger:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
+
+/* Tonal icon button (subtle filled) */
+.btn-icon-tonal {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 26px;
+  height: 26px;
+  border-radius: 50%;
+  background: var(--bg-item);
+  color: var(--text-secondary);
+  border: 1px solid var(--border);
+  flex-shrink: 0;
+}
+.btn-icon-tonal:hover {
+  background: var(--bg-item-hover);
+  color: var(--text-primary);
+  border-color: var(--text-secondary);
+}
+
+/* FAB-style add button */
+.btn-add {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px;
+  height: 28px;
+  border-radius: 50%;
+  background: var(--accent);
+  color: #fff;
+  border: none;
+  box-shadow: var(--shadow-1);
+}
+.btn-add:hover {
+  background: var(--accent-light);
+  box-shadow: var(--shadow-2);
+}
+.btn-add:active {
+  box-shadow: var(--shadow-1);
+}
+
+/* Tiny stepper for lw etc. */
+.btn-step {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 14px;
+  height: 10px;
+  border-radius: 2px;
+  background: transparent;
+  color: var(--text-muted);
+  line-height: 1;
+}
+.btn-step:hover {
+  background: var(--overlay-hover);
+  color: var(--text-primary);
+}
+
+/* Chip-style badge */
+.chip {
+  font-size: 9px;
+  font-weight: 600;
+  letter-spacing: 0.06em;
+  padding: 2px 8px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+  background: var(--bg-item);
+  color: var(--text-secondary);
+  display: inline-flex; align-items: center;
+}
+.chip-accent {
+  background: var(--accent-dim);
+  border-color: var(--accent-border);
+  color: var(--accent);
+}
+.chip-info {
+  background: var(--active-dim);
+  border-color: rgba(26, 78, 138, 0.3);
+  color: var(--active);
+}
+.chip-warn {
+  background: var(--warn-dim);
+  border-color: rgba(181, 98, 30, 0.3);
+  color: var(--warn);
+}
diff --git a/src/lib/rhinoBridge.js b/src/lib/rhinoBridge.js
new file mode 100644
index 0000000..4ac20bc
--- /dev/null
+++ b/src/lib/rhinoBridge.js
@@ -0,0 +1,289 @@
+/**
+ * rhinoBridge.js — Kommunikation React ↔ Rhino/Python
+ * Lange Payloads werden in Chunks <700 Zeichen aufgeteilt (document.title-Limit).
+ */
+const CHUNK_SIZE = 700
+
+let _queue = []
+let _busy  = false
+
+function _flush() {
+  if (_busy || _queue.length === 0) return
+  _busy = true
+  document.title = 'RHINOMSG::' + _queue.shift()
+  setTimeout(() => { _busy = false; _flush() }, 80)
+}
+
+// Mac WKWebView -> .NET String-Bruecke kann mit non-ASCII-Bytes haengen
+// (Umlaute wie A-Umlaut/O-Umlaut/U-Umlaut -> "Unable to translate bytes from specified code page").
+// Vor Transport ASCII-eskapen, Python's json.loads dekodiert die \uXXXX wieder.
+const _NON_ASCII = /[^\x00-\x7f]/g
+function _asciiEscape(s) {
+  return s.replace(_NON_ASCII, (c) =>
+    '\\u' + ('0000' + c.charCodeAt(0).toString(16)).slice(-4))
+}
+
+function send(type, payload = {}) {
+  if (!window.RHINO_MODE) { console.log('[Bridge] →', type, payload); return }
+  const json = _asciiEscape(JSON.stringify({ type, payload }))
+  if (json.length <= CHUNK_SIZE) {
+    _queue.push(json)
+  } else {
+    const total = Math.ceil(json.length / CHUNK_SIZE)
+    for (let i = 0; i < total; i++) {
+      _queue.push(_asciiEscape(JSON.stringify({
+        _chunk: { i, n: total },
+        d: json.slice(i * CHUNK_SIZE, (i + 1) * CHUNK_SIZE),
+      })))
+    }
+  }
+  _flush()
+}
+
+const _handlers = {}
+export function onMessage(type, handler) { _handlers[type] = handler }
+
+if (typeof window !== 'undefined') {
+  window.onRhinoMessage = (data) => {
+    const h = _handlers[data.type]
+    if (h) h(data.payload)
+    else console.log('[Bridge] ←', data.type, data.payload)
+  }
+}
+
+export function notifyReady() {
+  const tryReady = () => {
+    if (window.RHINO_MODE) send('READY', {})
+    else setTimeout(tryReady, 50)
+  }
+  tryReady()
+}
+
+export function applyAll(zeichnungsebenen, ebenen) {
+  send('APPLY', { zeichnungsebenen, ebenen })
+}
+
+export function setLayerVisibility(code, visible) {
+  send('LAYER_VISIBILITY', { code, visible })
+}
+
+export function setLayerLock(code, locked) {
+  send('LAYER_LOCK', { code, locked })
+}
+
+export function setLayerStyle(code, color, lw) {
+  send('LAYER_STYLE', { code, color, lw })
+}
+
+export function setActiveZeichnungsebene(z) {
+  send('SET_ACTIVE', { id: z.id, name: z.name, isGeschoss: !!z.isGeschoss, okff: z.okff ?? null })
+}
+
+export function setActiveEbene(code) {
+  send('SET_ACTIVE_LAYER', { code })
+}
+
+export function deleteEbene(code, moveTo) {
+  send('DELETE_EBENE', { code, moveTo: moveTo || null })
+}
+
+export function moveSelectionToEbene(code) {
+  send('MOVE_SELECTION_TO_LAYER', { code })
+}
+
+export function setClippingEnabled(enabled) {
+  send('SET_CLIPPING', { enabled: !!enabled })
+}
+
+// --- Ausschnitte ---
+export function listAusschnitte()                    { send('LIST', {}) }
+export function saveAusschnitt(name)                 { send('SAVE',   { name }) }
+export function updateAusschnitt(id)                 { send('UPDATE', { id }) }
+export function restoreAusschnitt(id)                { send('RESTORE', { id }) }
+export function applyAusschnittToDetail(id)          { send('APPLY_TO_DETAIL', { id }) }
+export function renameAusschnitt(id, name)           { send('RENAME', { id, name }) }
+export function deleteAusschnitt(id)                 { send('DELETE', { id }) }
+export function setAusschnittFolder(id, folder)      { send('SET_FOLDER', { id, folder }) }
+export function setAusschnittScale(id, scale)        { send('SET_SCALE',  { id, scale }) }
+export function duplicateAusschnitt(id)              { send('DUPLICATE', { id }) }
+export function addAusschnittFolder(name)            { send('ADD_FOLDER',    { name }) }
+export function removeAusschnittFolder(name)         { send('REMOVE_FOLDER', { name }) }
+export function getAusschnittLayers(id)              { send('GET_LAYERS',    { id }) }
+export function updateAusschnittLayers(id, layers)   { send('UPDATE_LAYERS', { id, layers }) }
+export function saveLayerPreset(name, layers)        { send('SAVE_PRESET',   { name, layers }) }
+export function deleteLayerPreset(name)              { send('DELETE_PRESET', { name }) }
+
+// --- Gestaltung-Panel ---
+export function requestSelection() {
+  send('GET_SELECTION', {})
+}
+
+export function setColorSource(source, color) {
+  send('SET_COLOR_SOURCE', { source, color: color || null })
+}
+
+export function setLwSource(source, lw) {
+  send('SET_LW_SOURCE', { source, lw: lw == null ? null : Number(lw) })
+}
+
+export function setLinetypeSource(source, name) {
+  send('SET_LINETYPE_SOURCE', { source, name: name || null })
+}
+
+export function setLinetypeScale(scale) {
+  send('SET_LINETYPE_SCALE', { scale: scale == null ? null : Number(scale) })
+}
+
+export function setFill(enabled, source, color, pattern, scale, rotation) {
+  send('SET_FILL', {
+    enabled:  !!enabled,
+    source:   source || 'object',
+    color:    color   || null,
+    pattern:  pattern || null,
+    scale:    scale    == null ? null : Number(scale),
+    rotation: rotation == null ? null : Number(rotation),
+  })
+}
+
+// --- Massstab-Panel ---
+export function requestMassstab()        { send('REQUEST_STATE', {}) }
+export function setMassstab(ratio)       { send('SET_SCALE',     { ratio: Number(ratio) }) }
+export function zoomOneToOne()           { send('ZOOM_ONE_TO_ONE', {}) }
+export function zoomExtents()            { send('ZOOM_EXTENTS',   {}) }
+export function zoomSelection()          { send('ZOOM_SELECTION', {}) }
+export function setMassstabDpi(dpi)      { send('SET_DPI',        { dpi: Number(dpi) }) }
+export function detectMassstabDpi()      { send('DETECT_DPI',     {}) }
+export function setShowLineweights(on)   { send('SET_LINEWEIGHTS',{ enabled: !!on }) }
+
+// --- Werkzeuge-Panel ---
+export function runRhinoCommand(cmd)     { send('RUN', { cmd }) }
+
+// --- Oberleiste-Panel ---
+export function setView(view)            { send('SET_VIEW',         { view }) }
+export function setDisplayMode(name)     { send('SET_DISPLAY_MODE', { name }) }
+export function toggleOrtho(on)          { send('TOGGLE_ORTHO',     { enabled: !!on }) }
+export function toggleGridSnap(on)       { send('TOGGLE_GRID_SNAP', { enabled: !!on }) }
+export function toggleOsnap(on)          { send('TOGGLE_OSNAP',     { enabled: !!on }) }
+export function toggleOverrides(on)      { send('TOGGLE_OVERRIDES', { enabled: !!on }) }
+export function setOverridesPreset(name) { send('SET_OVERRIDES_PRESET', { name: name || null }) }
+export function saveOverridesPreset(name) { send('SAVE_OVERRIDES_PRESET', { name }) }
+export function openOverridesPanel()     { send('OPEN_OVERRIDES_PANEL', {}) }
+export function runCommand(cmd)          { send('RUN_COMMAND',      { cmd }) }
+export function sendKeys(text, enter)    { send('SEND_KEYS',        { text, enter: enter !== false }) }
+export function cancelCommand()          { send('CANCEL_COMMAND',   {}) }
+export function toggleRhinoCmdLine()     { send('TOGGLE_RHINO_CMD_LINE', {}) }
+
+// --- Overrides-Panel ---
+export function setOverridesEnabled(on)  { send('SET_ENABLED',      { enabled: !!on }) }
+export function addRule(rule)            { send('ADD_RULE',         { rule }) }
+export function updateRule(id, rule)     { send('UPDATE_RULE',      { id, rule }) }
+export function deleteRule(id)           { send('DELETE_RULE',      { id }) }
+export function reorderRules(order)      { send('REORDER_RULES',    { order }) }
+export function duplicateRule(id)        { send('DUPLICATE_RULE',   { id }) }
+export function reapplyOverrides()       { send('REAPPLY', {}) }
+export function clearOverrideRules()     { send('CLEAR_RULES', {}) }
+export function savePreset(name)         { send('SAVE_PRESET',   { name }) }
+export function loadPreset(name, mode)   { send('LOAD_PRESET',   { name, mode: mode || 'replace' }) }
+export function deletePreset(name)       { send('DELETE_PRESET', { name }) }
+
+// --- Dimensionen-Panel ---
+export function setRefPoint(x, y, z)     { send('SET_REF_POINT',    { x, y, z }) }
+export function setCoordSystem(mode)     { send('SET_COORD_SYSTEM', { mode }) }
+export function setDimPosition(axis, value)    { send('SET_POSITION',  { axis, value }) }
+export function setDimDimension(axis, value)   { send('SET_DIMENSION', { axis, value }) }
+export function setDimRotationZ(angle)         { send('SET_ROTATION_Z', { angle }) }
+export function setCircleRadius(value)         { send('SET_CIRCLE_RADIUS', { value }) }
+export function setLineLength(value)           { send('SET_LINE_LENGTH',   { value }) }
+export function setRectangleDims(width, height) { send('SET_RECTANGLE',    { width, height }) }
+
+// --- Layouts-Panel ---
+export function listLayouts()            { send('LIST', {}) }
+export function newLayout(name, format, landscape, customWidth, customHeight) {
+  send('NEW_LAYOUT', { name, format, landscape: !!landscape,
+                       customWidth, customHeight })
+}
+export function deleteLayout(id)         { send('DELETE_LAYOUT',   { id }) }
+export function renameLayout(id, name)   { send('RENAME_LAYOUT',   { id, name }) }
+export function activateLayout(id)       { send('ACTIVATE_LAYOUT', { id }) }
+export function addDetail(pageId, ausschnittId) {
+  send('ADD_DETAIL', { pageId, ausschnittId: ausschnittId || null })
+}
+export function deleteDetail(pageId, detailId) {
+  send('DELETE_DETAIL', { pageId, detailId })
+}
+export function bindAusschnitt(pageId, detailId, ausschnittId) {
+  send('BIND_AUSSCHNITT', { pageId, detailId, ausschnittId: ausschnittId || null })
+}
+export function syncDetail(pageId, detailId) { send('SYNC_DETAIL', { pageId, detailId }) }
+export function syncLayout(id)               { send('SYNC_LAYOUT', { id }) }
+export function setPageSize(id, format, landscape, customWidth, customHeight) {
+  send('SET_PAGE_SIZE', { id, format, landscape: !!landscape,
+                          customWidth, customHeight })
+}
+export function exportPdf(id, dpi)           { send('EXPORT_PDF', { id, dpi: dpi || 300 }) }
+export function exportPdfAll(dpi)            { send('EXPORT_PDF', { dpi: dpi || 300 }) }
+export function exportPdfMany(ids, dpi)      { send('EXPORT_PDF', { ids, dpi: dpi || 300 }) }
+export function addLayoutFolder(name)        { send('ADD_FOLDER',    { name }) }
+export function removeLayoutFolder(name)     { send('REMOVE_FOLDER', { name }) }
+export function setLayoutFolder(id, folder)  { send('SET_FOLDER',    { id, folder }) }
+
+// --- Elemente-Panel (Smart Architektur-Elemente) ---
+export function listElemente()           { send('LIST', {}) }
+export function createWall(p)            { send('CREATE_WALL', p || {}) }
+export function createDecke(p)           { send('CREATE_DECKE', p || {}) }
+export function createDach(p)            { send('CREATE_DACH',  p || {}) }
+export function createFenster(p)         { send('CREATE_FENSTER', p || {}) }
+export function createTuer(p)            { send('CREATE_TUER',    p || {}) }
+export function createTreppe(p)          { send('CREATE_TREPPE',  p || {}) }
+export function updateElement(id, patch) { send('UPDATE_ELEMENT', { id, ...(patch || {}) }) }
+export function deleteElement(id)        { send('DELETE_ELEMENT', { id }) }
+// Backwards-Compat-Aliases
+export function updateWall(id, patch)    { send('UPDATE_WALL', { id, ...(patch || {}) }) }
+export function deleteWall(id)           { send('DELETE_WALL', { id }) }
+export function regenerateAllWalls()     { send('REGENERATE_ALL', {}) }
+export function regenerateAllElements()  { send('REGENERATE_ALL', {}) }
+
+
+let _visTimer = null
+let _visArgs  = null
+
+// --- EBENEN: Ebenenkombinationen (geteilter Store mit AUSSCHNITTE) ---
+export function getCombination()                 { send('GET_COMBINATION', {}) }
+export function applyCombination(layersOrPreset) {
+  // Akzeptiert entweder ein Array von Layer-States (alt) oder ein Preset-
+  // Objekt {layers, dossierEbenen, dossierZeichnungsebenen} (neu). Backend kommt
+  // mit beiden Formaten klar.
+  if (Array.isArray(layersOrPreset)) {
+    send('APPLY_COMBINATION', { layers: layersOrPreset })
+  } else if (layersOrPreset && typeof layersOrPreset === 'object') {
+    send('APPLY_COMBINATION', layersOrPreset)
+  } else {
+    send('APPLY_COMBINATION', { layers: [] })
+  }
+}
+export function saveCombinationPreset(name, layers) { send('SAVE_PRESET',   { name, layers }) }
+export function saveCurrentAsCombination(name)   { send('SAVE_CURRENT_AS_PRESET', { name }) }
+export function deleteCombinationPreset(name)    { send('DELETE_PRESET', { name }) }
+
+export function applyVisibility(activeZ, zeichnungsebenen, activeCode, ebenen, zMode, eMode) {
+  _visArgs = { activeZ, zeichnungsebenen, activeCode, ebenen, zMode, eMode }
+  if (_visTimer) clearTimeout(_visTimer)
+  _visTimer = setTimeout(() => {
+    _visTimer = null
+    const a = _visArgs
+    const slimZ = a.zeichnungsebenen.map(z => ({
+      id: z.id, name: z.name, visible: z.visible !== false,
+    }))
+    const slimE = a.ebenen.map(e => ({
+      code: e.code, visible: e.visible !== false, locked: e.locked === true,
+    }))
+    send('SET_VISIBILITY', {
+      activeZ:          { id: a.activeZ.id },
+      activeCode:       a.activeCode,
+      zeichnungsebenen: slimZ,
+      ebenen:           slimE,
+      zMode:            a.zMode,
+      eMode:            a.eMode,
+    })
+  }, 30)
+}
diff --git a/src/main.jsx b/src/main.jsx
new file mode 100644
index 0000000..b6e9fc1
--- /dev/null
+++ b/src/main.jsx
@@ -0,0 +1,47 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.jsx'
+import GestaltungApp from './GestaltungApp.jsx'
+import AusschnitteApp from './AusschnitteApp.jsx'
+import MassstabApp from './MassstabApp.jsx'
+import WerkzeugeApp from './WerkzeugeApp.jsx'
+import OberleisteApp from './OberleisteApp.jsx'
+import OverridesApp from './OverridesApp.jsx'
+import DimensionenApp from './DimensionenApp.jsx'
+import LayoutsApp from './LayoutsApp.jsx'
+import ElementeApp from './ElementeApp.jsx'
+
+const mode = (typeof window !== 'undefined' && window.PANEL_MODE) || 'ebenen'
+const RootApp = mode === 'gestaltung'  ? GestaltungApp
+              : mode === 'ausschnitte' ? AusschnitteApp
+              : mode === 'massstab'    ? MassstabApp
+              : mode === 'werkzeuge'   ? WerkzeugeApp
+              : mode === 'oberleiste'  ? OberleisteApp
+              : mode === 'overrides'   ? OverridesApp
+              : mode === 'dimensionen' ? DimensionenApp
+              : mode === 'layouts'     ? LayoutsApp
+              : mode === 'elemente'    ? ElementeApp
+              : App
+
+window.onerror = function (msg, src, line, col, err) {
+  document.body.style.cssText = 'background:#1c1c1e;margin:0;padding:12px'
+  document.body.innerHTML =
+    '<pre style="color:#ff6b6b;font-size:10px;font-family:monospace;white-space:pre-wrap">' +
+    'JS ERROR:\n' + msg + '\n' + src + ':' + line + '\n' +
+    (err ? err.stack : '') + '</pre>'
+  return false
+}
+
+window.onunhandledrejection = function (e) {
+  document.body.style.cssText = 'background:#1c1c1e;margin:0;padding:12px'
+  document.body.innerHTML =
+    '<pre style="color:#ff6b6b;font-size:10px;font-family:monospace;white-space:pre-wrap">' +
+    'PROMISE ERROR:\n' + (e.reason ? e.reason.stack || e.reason : e) + '</pre>'
+}
+
+createRoot(document.getElementById('root')).render(
+  <StrictMode>
+    <RootApp />
+  </StrictMode>,
+)
diff --git a/tools/export_icons.py b/tools/export_icons.py
new file mode 100644
index 0000000..715da19
--- /dev/null
+++ b/tools/export_icons.py
@@ -0,0 +1,161 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+export_icons.py
+Laedt alle Material-Symbols-Outlined Icons herunter die unsere WERKZEUGE-
+Sidebar benutzt, und konvertiert sie zu PNG (32x32) fuer Rhino-Toolbars.
+
+Ausgabe-Ordner: ./icons_export/
+  dossier_icons/
+    svg/   — Originale SVGs (skalierbar)
+    png/   — 32x32 PNGs fuer Rhino .rui Buttons
+
+Konvertierung SVG->PNG nutzt 'rsvg-convert' wenn installiert, sonst Mac's
+'qlmanage' (immer verfuegbar) als Fallback.
+
+Verwendung:
+    python3 tools/export_icons.py
+"""
+import os
+import sys
+import shutil
+import subprocess
+from urllib.request import urlopen, Request
+
+# Icons gruppiert wie in WerkzeugeApp.jsx — name : label (label nur fuer Logging)
+ICONS = {
+    # 2D Zeichnen
+    "horizontal_rule":         "Line",
+    "polyline":                "Polyline",
+    "rectangle":               "Rect",
+    "radio_button_unchecked":  "Circle",
+    "network_intelligence":    "Arc",
+    "gesture":                 "Curve",
+    "text_fields":             "Text",
+    "grid_view":               "Hatch",
+    "straighten":              "Dim",
+    # 2D Editieren
+    "open_with":               "Move",
+    "content_copy":            "Copy",
+    "rotate_right":            "Rotate",
+    "aspect_ratio":            "Scale",
+    "flip":                    "Mirror",
+    "padding":                 "Offset",
+    "content_cut":             "Trim",
+    "swipe_right_alt":         "Extend",
+    "link":                    "Join",
+    "scatter_plot":            "Explode",
+    "rounded_corner":          "Fillet",
+    "apps":                    "Array",
+    # 3D Modellieren
+    "vertical_align_top":      "Extrude",
+    "square":                  "Box",
+    "join_inner":              "Union",
+    "remove":                  "Diff",
+    "gradient":                "Intersect",
+    "roofing":                 "Cap",
+    "cut":                     "Section",
+    "unfold_more":             "Loft",
+    # Auswahl
+    "add_link":                "SelChain",
+    "filter_alt":              "SelDup",
+    "loop":                    "SelClosed",
+    "compare_arrows":          "Invert",
+    "select_all":              "SelAll",
+    "deselect":                "SelNone",
+}
+
+URL_TPL = "https://fonts.gstatic.com/s/i/short-term/release/materialsymbolsoutlined/{name}/default/24px.svg"
+
+OUT_ROOT = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "icons_export", "dossier_icons")
+OUT_SVG  = os.path.join(OUT_ROOT, "svg")
+OUT_PNG  = os.path.join(OUT_ROOT, "png")
+
+
+def ensure_dirs():
+    for d in (OUT_SVG, OUT_PNG):
+        if not os.path.isdir(d):
+            os.makedirs(d)
+
+
+def download_svg(name):
+    url = URL_TPL.format(name=name)
+    req = Request(url, headers={"User-Agent": "Mozilla/5.0"})
+    with urlopen(req, timeout=10) as r:
+        return r.read()
+
+
+def have(cmd):
+    return shutil.which(cmd) is not None
+
+
+def convert_to_png(svg_path, png_path, size=32):
+    """Konvertiert SVG -> PNG. Probiert rsvg-convert, sonst qlmanage (Mac)."""
+    if have("rsvg-convert"):
+        try:
+            subprocess.check_call(
+                ["rsvg-convert", "-w", str(size), "-h", str(size),
+                 svg_path, "-o", png_path],
+                stderr=subprocess.DEVNULL,
+            )
+            return "rsvg-convert"
+        except subprocess.CalledProcessError:
+            pass
+    if have("qlmanage"):
+        # qlmanage erzeugt {svg_path}.png im out-dir
+        out_dir = os.path.dirname(png_path)
+        try:
+            subprocess.check_call(
+                ["qlmanage", "-t", "-s", str(size), "-o", out_dir, svg_path],
+                stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL,
+            )
+            generated = svg_path + ".png"
+            generated_in_outdir = os.path.join(out_dir, os.path.basename(generated))
+            if os.path.isfile(generated_in_outdir):
+                shutil.move(generated_in_outdir, png_path)
+                return "qlmanage"
+        except subprocess.CalledProcessError:
+            pass
+    return None
+
+
+def main():
+    ensure_dirs()
+    print("[icons] Ziel: " + os.path.abspath(OUT_ROOT))
+    n_ok = 0
+    n_png = 0
+    n_fail = []
+    converter_used = None
+    for name, label in sorted(ICONS.items()):
+        svg_path = os.path.join(OUT_SVG, name + ".svg")
+        try:
+            data = download_svg(name)
+            with open(svg_path, "wb") as f:
+                f.write(data)
+            n_ok += 1
+            # SVG -> PNG
+            png_path = os.path.join(OUT_PNG, name + ".png")
+            used = convert_to_png(svg_path, png_path, size=32)
+            if used:
+                converter_used = used
+                n_png += 1
+            print("  OK  {:<24} → {}".format(name, label))
+        except Exception as ex:
+            n_fail.append((name, str(ex)))
+            print("  FAIL {:<24} → {}  ({})".format(name, label, ex))
+    print("")
+    print("[icons] SVGs: {} ok / {} fail".format(n_ok, len(n_fail)))
+    if n_png:
+        print("[icons] PNGs: {} via {}".format(n_png, converter_used))
+    elif n_ok:
+        print("[icons] PNG-Konvertierung uebersprungen — kein rsvg-convert/qlmanage gefunden.")
+        print("        Installiere via: brew install librsvg")
+    if n_fail:
+        print("")
+        print("[icons] Fehlgeschlagene Icons (vielleicht andere Namen im Symbols-Repo):")
+        for n, err in n_fail:
+            print("  - {} : {}".format(n, err))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/vite.config.js b/vite.config.js
new file mode 100644
index 0000000..b610300
--- /dev/null
+++ b/vite.config.js
@@ -0,0 +1,12 @@
+import { defineConfig } from 'vite'
+import react from '@vitejs/plugin-react'
+import pkg from './package.json' with { type: 'json' }
+
+// https://vite.dev/config/
+export default defineConfig({
+  plugins: [react()],
+  base: './',   // relative paths so file:// URLs in WKWebView funktionieren
+  define: {
+    __APP_VERSION__: JSON.stringify(pkg.version),
+  },
+})