Symbol-Picker als Satellite-Fenster (statt Modal im Elemente-Panel)

UX-Verbesserung: Modal-Overlay im engen Elemente-Panel war unpraktisch.
Symbol-Picker oeffnet sich jetzt als eigenstaendiges Eto.Form-Fenster
(wie Library/Project-Settings).

Frontend:
- SymbolPicker bekommt embedded-Prop (Satellite-Mount vs Modal-Overlay)
- Neuer SymbolPickerApp Satellite-Wrapper (PANEL_PARAMS lesen + Bridge)
- main.jsx: 'symbol_picker' Mode-Routing
- ElementeApp: Symbol-Button ruft nur noch listLibrary() — Backend
  oeffnet das Fenster

Backend:
- _cmd_list_library oeffnet jetzt das Satellite-Window mit eigener
  Bridge (PICK -> CREATE_SYMBOL, CANCEL -> Close)
- PICK schliesst Fenster + triggert interactive GetPoint im Viewport

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

src/components/SymbolPicker.jsx

@@ -63,7 +63,7 @@ function ItemCard({ item, onPick }) {
   )
 }
 
-export default function SymbolPicker({ items, onPick, onClose }) {
+export default function SymbolPicker({ items, onPick, onClose, embedded = false }) {
   const [search, setSearch] = useState('')
   const [typeFilter, setTypeFilter] = useState('all')
 
@@ -84,94 +84,108 @@ export default function SymbolPicker({ items, onPick, onClose }) {
     })
   }, [placable, search, typeFilter])
 
-  return (
-    <div style={{
-      position: 'fixed', inset: 0, zIndex: 200,
-      background: 'var(--bg-overlay)',
-      display: 'flex', alignItems: 'center', justifyContent: 'center',
-    }} onClick={onClose}>
-      <div onClick={(e) => e.stopPropagation()}
-        style={{
-          width: '90%', maxWidth: 640, maxHeight: '80vh',
-          background: 'var(--bg-dialog)',
-          border: '1px solid var(--border)',
-          borderRadius: 12,
-          display: 'flex', flexDirection: 'column',
-          overflow: 'hidden',
-          color: 'var(--text-primary)',
-          fontFamily: 'var(--font)', fontSize: 11,
-          boxShadow: '0 8px 32px rgba(0,0,0,0.4)',
-        }}>
-        {/* Header */}
-        <div style={{
-          display: 'flex', alignItems: 'center', gap: 8,
-          padding: '10px 14px',
-          borderBottom: '1px solid var(--border)',
-        }}>
-          <Icon name="inventory_2" size={14}
-                style={{ color: 'var(--accent)' }} />
-          <span style={{ flex: 1, fontWeight: 600, fontSize: 12 }}>
-            Symbol / Objekt einfuegen
-          </span>
-          <BarButton icon="close" onClick={onClose} title="Schliessen" />
-        </div>
+  const innerStyle = embedded ? {
+    width: '100%', height: '100%',
+    background: 'var(--bg-dialog)',
+    display: 'flex', flexDirection: 'column',
+    overflow: 'hidden',
+    color: 'var(--text-primary)',
+    fontFamily: 'var(--font)', fontSize: 11,
+  } : {
+    width: '90%', maxWidth: 640, maxHeight: '80vh',
+    background: 'var(--bg-dialog)',
+    border: '1px solid var(--border)',
+    borderRadius: 12,
+    display: 'flex', flexDirection: 'column',
+    overflow: 'hidden',
+    color: 'var(--text-primary)',
+    fontFamily: 'var(--font)', fontSize: 11,
+    boxShadow: '0 8px 32px rgba(0,0,0,0.4)',
+  }
 
-        {/* Toolbar */}
-        <div style={{
-          display: 'flex', alignItems: 'center', gap: 6,
-          padding: '8px 14px',
-          borderBottom: '1px solid var(--border)',
-        }}>
-          <input type="text" value={search}
-            onChange={(ev) => setSearch(ev.target.value)}
-            placeholder="Suchen (Name oder Tag)…"
-            autoFocus
-            style={{ flex: 1, height: BAR_H, padding: '0 12px',
-                      fontSize: 11 }} />
-          <BarToggle label="Alle" active={typeFilter === 'all'}
-            onClick={() => setTypeFilter('all')} />
-          <BarToggle label="Symbole" active={typeFilter === 'symbol'}
-            onClick={() => setTypeFilter('symbol')} />
-          <BarToggle label="Objekte" active={typeFilter === 'object'}
-            onClick={() => setTypeFilter('object')} />
-        </div>
+  const content = (
+    <div style={innerStyle}>
+      {/* Header */}
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 8,
+        padding: '10px 14px',
+        borderBottom: '1px solid var(--border)',
+      }}>
+        <Icon name="inventory_2" size={14}
+              style={{ color: 'var(--accent)' }} />
+        <span style={{ flex: 1, fontWeight: 600, fontSize: 12 }}>
+          Symbol / Objekt einfuegen
+        </span>
+        <BarButton icon="close" onClick={onClose} title="Schliessen" />
+      </div>
 
-        {/* Grid */}
-        <div style={{ flex: 1, minHeight: 200, overflowY: 'auto',
-                       padding: 12 }}>
-          {filtered.length === 0 ? (
-            <div style={{ padding: 40, textAlign: 'center',
-                           color: 'var(--text-muted)' }}>
-              {placable.length === 0
-                ? 'Keine Symbole/Objekte in der Library.'
-                : 'Nichts gefunden.'}
-            </div>
-          ) : (
-            <div style={{
-              display: 'grid',
-              gridTemplateColumns: 'repeat(auto-fill, minmax(130px, 1fr))',
-              gap: 8,
-            }}>
-              {filtered.map(it => (
-                <ItemCard key={it.id} item={it} onPick={onPick} />
-              ))}
-            </div>
-          )}
-        </div>
+      {/* Toolbar */}
+      <div style={{
+        display: 'flex', alignItems: 'center', gap: 6,
+        padding: '8px 14px',
+        borderBottom: '1px solid var(--border)',
+      }}>
+        <input type="text" value={search}
+          onChange={(ev) => setSearch(ev.target.value)}
+          placeholder="Suchen (Name oder Tag)…"
+          autoFocus
+          style={{ flex: 1, height: BAR_H, padding: '0 12px',
+                    fontSize: 11 }} />
+        <BarToggle label="Alle" active={typeFilter === 'all'}
+          onClick={() => setTypeFilter('all')} />
+        <BarToggle label="Symbole" active={typeFilter === 'symbol'}
+          onClick={() => setTypeFilter('symbol')} />
+        <BarToggle label="Objekte" active={typeFilter === 'object'}
+          onClick={() => setTypeFilter('object')} />
+      </div>
 
-        {/* Footer */}
-        <div style={{
-          padding: '8px 14px',
-          borderTop: '1px solid var(--border)',
-          background: 'var(--bg-section)',
-          fontSize: 10, color: 'var(--text-muted)',
-        }}>
-          Klick auf Item → im Viewport Punkt waehlen zum Platzieren.
-          {filtered.length > 0 && (
-            <span> · {filtered.length} / {placable.length}</span>
-          )}
-        </div>
+      {/* Grid */}
+      <div style={{ flex: 1, minHeight: 200, overflowY: 'auto',
+                     padding: 12 }}>
+        {filtered.length === 0 ? (
+          <div style={{ padding: 40, textAlign: 'center',
+                         color: 'var(--text-muted)' }}>
+            {placable.length === 0
+              ? 'Keine Symbole/Objekte in der Library.'
+              : 'Nichts gefunden.'}
+          </div>
+        ) : (
+          <div style={{
+            display: 'grid',
+            gridTemplateColumns: 'repeat(auto-fill, minmax(130px, 1fr))',
+            gap: 8,
+          }}>
+            {filtered.map(it => (
+              <ItemCard key={it.id} item={it} onPick={onPick} />
+            ))}
+          </div>
+        )}
+      </div>
+
+      {/* Footer */}
+      <div style={{
+        padding: '8px 14px',
+        borderTop: '1px solid var(--border)',
+        background: 'var(--bg-section)',
+        fontSize: 10, color: 'var(--text-muted)',
+      }}>
+        Klick auf Item → im Viewport Punkt waehlen zum Platzieren.
+        {filtered.length > 0 && (
+          <span> · {filtered.length} / {placable.length}</span>
+        )}
       </div>
     </div>
   )
+
+  if (embedded) return content
+  return (
+    <div onClick={onClose}
+      style={{
+        position: 'fixed', inset: 0, zIndex: 200,
+        background: 'var(--bg-overlay)',
+        display: 'flex', alignItems: 'center', justifyContent: 'center',
+      }}>
+      <div onClick={(e) => e.stopPropagation()}>{content}</div>
+    </div>
+  )
 }