Elemente: BIM Project Browser + Properties-Satellite-Window

Zwei neue Satellite-Windows (analog Kamera/Text-Editor):

1) Projekt-Übersicht (elemente_uebersicht.py + ElementeUebersichtApp.jsx)
   - Tree Geschoss → Kind → Element-Instanzen
   - Suche + Kind-Filter-Chips
   - Klick = selektieren in Rhino, Shift+Klick = zoomen
   - Erreichbar via account_tree-Button im Elemente-Panel-Header

2) Properties-Satellite (elemente_properties.py + ElementePropertiesApp.jsx)
   - Eigenes Fenster mit der PropertiesView (gemeinsame Komponente)
   - Live-Updates: elemente._send_state forwarded zu satellite-bridge via sticky
   - Erreichbar via open_in_new-Icon oben rechts in der Properties-Karte
   - Inline-Properties im Panel bleiben — Satellite ist für mehr Platz

Plus ElementeApp-Cleanup:
- ElementList (alle Elemente-Liste) raus — wird jetzt von Projekt-
  Übersicht abgedeckt.
- Properties springen bei Selektion nach oben, NeuesElement bleibt
  voll sichtbar darunter (kein Scrollen mehr).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

rhino/elemente.py

@@ -4684,6 +4684,20 @@ class ElementeBridge(panel_base.BaseBridge):
         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()
+        elif t == "OPEN_ELEMENTE_UEBERSICHT":
+            try:
+                import elemente_uebersicht
+                elemente_uebersicht.open_as_window()
+            except Exception as ex:
+                print("[ELEMENTE] open uebersicht:", ex)
+        elif t == "OPEN_ELEMENTE_PROPERTIES":
+            try:
+                import elemente_properties
+                elemente_properties.open_as_window()
+                # Direkt mal pushen damit das Fenster sofort Daten hat
+                self._send_state()
+            except Exception as ex:
+                print("[ELEMENTE] open properties:", ex)
 
     def _notify_active_geschoss(self):
         """Schlanker Partial-Push: nur activeGeschoss + activeGeschossName.
@@ -4884,7 +4898,7 @@ class ElementeBridge(panel_base.BaseBridge):
                 })
             elements.append(base)
         sel_id = next((e["id"] for e in elements if e["selected"]), None)
-        self.send("STATE", {
+        payload = {
             "elements":      elements,
             "geschosse":     [{"id": g.get("id"), "name": g.get("name")}
                               for g in geschosse if isinstance(g, dict)],
@@ -4897,7 +4911,14 @@ class ElementeBridge(panel_base.BaseBridge):
                 {"name": n, "color": m["color"],
                  "hatch": m.get("hatch", ""), "scale": m.get("scale", 1.0)}
                 for n, m in _MATERIAL_LIBRARY.items()],
-        })
+        }
+        self.send("STATE", payload)
+        # An Properties-Satellite-Window forwarden falls offen
+        try:
+            pb = sc.sticky.get("elemente_properties_bridge")
+            if pb is not None and pb is not self:
+                pb.send("STATE", payload)
+        except Exception: pass
 
     # --- Wand-Befehle -------------------------------------------------------