feat: delete function, sidebar collapse, layer drag&drop, library tree

- Delete: trash button in PropertiesPanel + existing Delete key support
- Left sidebar: desktop collapse toggle button
- Right sidebar: desktop collapse toggle + SVG icon size fix (replaced emoji)
- Layer panel: drag&drop enabled (reorder, move to layers, sub-layers)
- Library tree: BlockLibrary added to left sidebar
- App.tsx: handleReorderLayer, handleAddSubLayer, handleUpdateElement
- styles.css: collapse + drag&drop visual indicators

frontend/src/App.tsx

@@ -147,6 +147,9 @@ const CADEditor: React.FC<CADEditorProps> = ({ projectId, token, onNavigateBack
   // Mobile drawers
   const [mobileLeftOpen, setMobileLeftOpen] = useState(false);
   const [mobileRightOpen, setMobileRightOpen] = useState(false);
+  // Desktop sidebar collapse
+  const [leftSidebarCollapsed, setLeftSidebarCollapsed] = useState(false);
+  const [rightSidebarCollapsed, setRightSidebarCollapsed] = useState(false);
   const [settingsOpen, setSettingsOpen] = useState(false);
   const [activeDrawerTab, setActiveDrawerTab] = useState<DrawerTab>('tool');
 
@@ -792,6 +795,89 @@ const CADEditor: React.FC<CADEditorProps> = ({ projectId, token, onNavigateBack
     setCommandHistory((prev) => [...prev, { prefix: '·', text: 'Zoom: an Ansicht angepasst', type: 'info' }]);
   }, []);
 
+  // Layer reorder (drag & drop)
+  const handleReorderLayer = useCallback((draggedId: string, targetId: string, position: 'before' | 'after' | 'inside') => {
+    setLayers((prev) => {
+      const dragged = prev.find((l) => l.id === draggedId);
+      if (!dragged) return prev;
+
+      if (position === 'inside') {
+        // Make dragged a child of target
+        const updated = prev.map((l) =>
+          l.id === draggedId ? { ...l, parentId: targetId } : l
+        );
+        return updated;
+      }
+
+      // before/after: reorder at same level
+      const target = prev.find((l) => l.id === targetId);
+      if (!target) return prev;
+
+      const parentId = target.parentId;
+      const siblings = prev
+        .filter((l) => l.parentId === parentId && l.id !== draggedId)
+        .sort((a, b) => a.sortOrder - b.sortOrder);
+
+      const targetIdx = siblings.findIndex((l) => l.id === targetId);
+      const insertIdx = position === 'before' ? targetIdx : targetIdx + 1;
+
+      siblings.splice(insertIdx, 0, { ...dragged, parentId });
+
+      // Reassign sortOrder
+      const reordered = siblings.map((l, i) => ({ ...l, sortOrder: i }));
+
+      // Merge back: non-siblings keep original, siblings get reordered
+      const nonSiblings = prev.filter((l) => l.parentId !== parentId || l.id === draggedId);
+      const result = [...nonSiblings.filter((l) => l.id !== draggedId), ...reordered];
+      return result;
+    });
+    setCommandHistory((prev) => [...prev, { prefix: '·', text: 'Ebene verschoben', type: 'info' }]);
+  }, []);
+
+  // Add sub-layer
+  const handleAddSubLayer = useCallback((parentId: string) => {
+    setLayers((prev) => {
+      const parent = prev.find((l) => l.id === parentId);
+      if (!parent) return prev;
+      const newId = `layer-${Date.now()}`;
+      const siblings = prev.filter((l) => l.parentId === parentId);
+      const newLayer: CADLayer = {
+        id: newId, name: `Teilebene ${siblings.length + 1}`, visible: true, locked: false,
+        color: parent.color, lineType: 'solid', transparency: 0,
+        sortOrder: siblings.length, parentId,
+      };
+      if (drawingId && token) {
+        createLayerTyped(token, drawingId, newLayer).catch((err) => {
+          console.error('Failed to save sub-layer:', err);
+        });
+      }
+      return [...prev, newLayer];
+    });
+  }, [drawingId, token]);
+
+  // Update single element (from properties panel)
+  const handleUpdateElement = useCallback((updated: CADElement) => {
+    setElements((prev) => {
+      const newElements = prev.map((e) => (e.id === updated.id ? updated : e));
+      historyManagerRef.current.pushSnapshot({
+        elements: newElements, layers, blocks, groups, bgConfig,
+      }, 'Element geändert');
+      return newElements;
+    });
+    syncHistory();
+    collab.setElement(updated);
+    if (token) {
+      setSavedStatus('Speichert…');
+      updateElement(token, updated.id, updated).then(() => {
+        setSavedStatus('gespeichert');
+      }).catch((err) => {
+        console.error('Failed to update element:', err);
+        setSavedStatus('Fehler beim Speichern');
+      });
+    }
+    setSelectedElement(updated);
+  }, [layers, blocks, groups, bgConfig, syncHistory, token, collab]);
+
   const handleBgApply = useCallback((config: BackgroundConfig, _image: HTMLImageElement | null) => {
     setBgConfig(config);
     setBgImportOpen(false);
@@ -950,7 +1036,7 @@ const CADEditor: React.FC<CADEditorProps> = ({ projectId, token, onNavigateBack
         onTabChange={setActiveRibbonTab}
         onAction={handleRibbonAction}
       />
-      <div className="app-body">
+      <div className={`app-body${leftSidebarCollapsed ? ' left-collapsed' : ''}${rightSidebarCollapsed ? ' right-collapsed' : ''}`}>
         <LeftSidebar
           activeTool={activeTool}
           onToolChange={handleToolChange}
@@ -958,6 +1044,17 @@ const CADEditor: React.FC<CADEditorProps> = ({ projectId, token, onNavigateBack
           onTemplateSelect={handleTemplateSelect}
           className={mobileLeftOpen ? 'open' : ''}
           onCollapse={() => setMobileLeftOpen(false)}
+          collapsed={leftSidebarCollapsed}
+          onToggleCollapse={() => setLeftSidebarCollapsed((p) => !p)}
+          blocks={blocks}
+          onDragBlock={handleDragBlock}
+          onBlockCategoryChange={handleBlockCategoryChange}
+          onBlockSearch={handleBlockSearch}
+          onRenameBlock={handleRenameBlock}
+          onDuplicateBlock={handleDuplicateBlock}
+          onDeleteBlock={handleDeleteBlock}
+          onSvgImport={handleSvgImport}
+          onSaveGroupAsBlock={handleSaveGroupAsBlock}
         />
         <CanvasArea
           cursorPos={cursorPos}
@@ -1022,6 +1119,11 @@ const CADEditor: React.FC<CADEditorProps> = ({ projectId, token, onNavigateBack
           kiLoading={kiLoading}
           className={mobileRightOpen ? 'open' : ''}
           onCollapse={() => setMobileRightOpen(false)}
+          collapsed={rightSidebarCollapsed}
+          onToggleCollapse={() => setRightSidebarCollapsed((p) => !p)}
+          onReorder={handleReorderLayer}
+          onAddSubLayer={handleAddSubLayer}
+          onUpdateElement={handleUpdateElement}
         />
       </div>
       <CommandLine

frontend/src/components/LayerPanel.tsx

@@ -131,6 +131,7 @@ const LayerPanel: React.FC<LayerPanelProps> = ({
             selectedId={activeLayerId}
             onSelect={onSelectLayer}
             onReorder={onReorder}
+            draggable={true}
             renderIcon={(node) => node.icon}
             renderActions={(node) => {
               const layer = layers.find((l) => l.id === node.id);
@@ -140,16 +141,16 @@ const LayerPanel: React.FC<LayerPanelProps> = ({
                     <button
                       onClick={(e) => { e.stopPropagation(); onToggleLayer(layer.id); }}
                       title={layer.visible ? 'Sichtbar' : 'Versteckt'}
-                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: layer.visible ? 'var(--text-color, #ccc)' : 'var(--text-muted, #666)' }}
+                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: layer.visible ? 'var(--text-color, #ccc)' : 'var(--text-muted, #666)', display: 'flex', alignItems: 'center' }}
                     >
-                      {layer.visible ? '👁' : '🚫'}
+                      {layer.visible ? <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg> : <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><path d="M17.94 17.94A10.07 10.07 0 0 1 12 20c-7 0-11-8-11-8a18.45 18.45 0 0 1 5.06-5.94M9.9 4.24A9.12 9.12 0 0 1 12 4c7 0 11 8 11 8a18.5 18.5 0 0 1-2.16 3.19m-6.72-1.07a3 3 0 1 1-4.24-4.24"/><line x1="1" y1="1" x2="23" y2="23"/></svg>}
                     </button>
                     <button
                       onClick={(e) => { e.stopPropagation(); onToggleLock?.(layer.id); }}
                       title={layer.locked ? 'Gesperrt' : 'Entsperrt'}
-                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: layer.locked ? 'var(--accent, #f59e0b)' : 'var(--text-muted, #666)' }}
+                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: layer.locked ? 'var(--accent, #f59e0b)' : 'var(--text-muted, #666)', display: 'flex', alignItems: 'center' }}
                     >
-                      {layer.locked ? '🔒' : '🔓'}
+                      {layer.locked ? <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><rect x="3" y="11" width="18" height="11" rx="2"/><path d="M7 11V7a5 5 0 0 1 10 0v4"/></svg> : <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><rect x="3" y="11" width="18" height="11" rx="2"/><path d="M7 11V7a5 5 0 0 1 9.9-1"/></svg>}
                     </button>
                     <button
                       onClick={(e) => { e.stopPropagation(); handleAddSubLayer(layer.id); }}
@@ -161,16 +162,16 @@ const LayerPanel: React.FC<LayerPanelProps> = ({
                     <button
                       onClick={(e) => { e.stopPropagation(); onDuplicateLayer?.(layer.id); }}
                       title="Duplizieren"
-                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: 'var(--text-color, #ccc)' }}
+                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: 'var(--text-color, #ccc)', display: 'flex', alignItems: 'center' }}
                     >
-                      ⧉
+                      <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><rect x="9" y="9" width="13" height="13" rx="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg>
                     </button>
                     <button
                       onClick={(e) => { e.stopPropagation(); onDeleteLayer?.(layer.id); }}
                       title="Loschen"
-                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: '#f44336' }}
+                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: '#f44336', display: 'flex', alignItems: 'center' }}
                     >
-                      ✕
+                      <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
                     </button>
                   </div>
                 );
@@ -183,16 +184,16 @@ const LayerPanel: React.FC<LayerPanelProps> = ({
                     <button
                       onClick={(e) => { e.stopPropagation(); onToggleElementVisible?.(element.id); }}
                       title={isVisible ? 'Sichtbar' : 'Versteckt'}
-                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: isVisible ? 'var(--text-color, #ccc)' : 'var(--text-muted, #666)' }}
+                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: isVisible ? 'var(--text-color, #ccc)' : 'var(--text-muted, #666)', display: 'flex', alignItems: 'center' }}
                     >
-                      {isVisible ? '👁' : '🚫'}
+                      {isVisible ? <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><path d="M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z"/><circle cx="12" cy="12" r="3"/></svg> : <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><path d="M17.94 17.94A10.07 10.07 0 0 1 12 20c-7 0-11-8-11-8a18.45 18.45 0 0 1 5.06-5.94M9.9 4.24A9.12 9.12 0 0 1 12 4c7 0 11 8 11 8a18.5 18.5 0 0 1-2.16 3.19m-6.72-1.07a3 3 0 1 1-4.24-4.24"/><line x1="1" y1="1" x2="23" y2="23"/></svg>}
                     </button>
                     <button
                       onClick={(e) => { e.stopPropagation(); onElementsDeleted?.([element.id]); }}
                       title="Loschen"
-                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: '#f44336' }}
+                      style={{ background: 'none', border: 'none', cursor: 'pointer', padding: '2px', color: '#f44336', display: 'flex', alignItems: 'center' }}
                     >
-                      ✕
+                      <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
                     </button>
                   </div>
                 );

frontend/src/components/LeftSidebar.tsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import type { LeftSidebarProps } from '../types/ui.types';
 import { SEATING_TEMPLATES } from '../services/seatingService';
+import BlockLibrary from './BlockLibrary';
 
 interface ToolDef {
   tool: string;
@@ -56,9 +57,9 @@ const sections: Array<{ label: string; tools: ToolDef[] }> = [
   { label: 'Bestuhlung', tools: sectionBestuhlung },
 ];
 
-const LeftSidebar: React.FC<LeftSidebarProps> = ({ activeTool, onToolChange, selectedTemplate, onTemplateSelect, onCollapse, className }) => {
+const LeftSidebar: React.FC<LeftSidebarProps> = ({ activeTool, onToolChange, selectedTemplate, onTemplateSelect, onCollapse, className, collapsed, onToggleCollapse, blocks, onDragBlock, onBlockCategoryChange, onBlockSearch, onRenameBlock, onDuplicateBlock, onDeleteBlock, onSvgImport, onSaveGroupAsBlock }) => {
   return (
-    <aside className={`leftbar${className ? ' ' + className : ''}`} aria-label="Werkzeugpalette">
+    <aside className={`leftbar${className ? ' ' + className : ''}${collapsed ? ' leftbar-collapsed' : ''}`} aria-label="Werkzeugpalette">
       <div className="leftbar-header">
         <span className="leftbar-title">Werkzeuge</span>
         <button className="leftbar-toggle" aria-label="Linke Leiste ausblenden" onClick={onCollapse}>
@@ -120,7 +121,30 @@ const LeftSidebar: React.FC<LeftSidebarProps> = ({ activeTool, onToolChange, sel
         </div>
       )}
 
+      {blocks && blocks.length > 0 && (
+        <div className="tool-section" key="library">
+          <div className="tool-section-label">Bibliothek</div>
+          <BlockLibrary
+            blocks={blocks}
+            category="Alle"
+            onCategoryChange={onBlockCategoryChange ?? (() => {})}
+            onSearch={onBlockSearch ?? (() => {})}
+            onDragBlock={onDragBlock ?? (() => {})}
+            onRenameBlock={onRenameBlock}
+            onDuplicateBlock={onDuplicateBlock}
+            onDeleteBlock={onDeleteBlock}
+            onSvgImport={onSvgImport}
+            onSaveGroupAsBlock={onSaveGroupAsBlock}
+          />
+        </div>
+      )}
+
       <div className="leftbar-footer">
+        {onToggleCollapse && (
+          <button className="leftbar-footer-btn" title="Linke Leiste ein-/ausklappen" aria-label="Linke Leiste ein-/ausklappen" onClick={onToggleCollapse}>
+            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="15 18 9 12 15 6"/></svg>
+          </button>
+        )}
         <button className="leftbar-footer-btn" title="Plugin hinzufügen" aria-label="Plugin hinzufügen">
           <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><line x1="12" y1="8" x2="12" y2="16"/><line x1="8" y1="12" x2="16" y2="12"/></svg>
         </button>

frontend/src/components/PropertiesPanel.tsx

@@ -1,7 +1,7 @@
 import React from 'react';
 import type { PropertiesPanelProps } from '../types/ui.types';
 
-const PropertiesPanel: React.FC<PropertiesPanelProps> = ({ selectedElement, layers, onUpdateProperty }) => {
+const PropertiesPanel: React.FC<PropertiesPanelProps> = ({ selectedElement, layers, onUpdateProperty, onDelete }) => {
   const el = selectedElement;
   const x = el ? String(el.x) : '0';
   const y = el ? String(el.y) : '0';
@@ -17,9 +17,21 @@ const PropertiesPanel: React.FC<PropertiesPanelProps> = ({ selectedElement, laye
       <div className="panel-section">
         <div className="panel-section-title">
           <span>Auswahl · 1 Stuhl</span>
-          <button style={{ color: 'var(--color-text-muted)', fontSize: '11px' }} title="Mehr Optionen">
+          <div style={{ display: 'flex', gap: '4px' }}>
-            <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="1"/><circle cx="12" cy="5" r="1"/><circle cx="12" cy="19" r="1"/></svg>
+            {onDelete && el && (
+              <button
+                onClick={onDelete}
+                title="Auswahl löschen (Entf)"
+                aria-label="Auswahl löschen"
+                style={{ color: '#f44336', background: 'none', border: 'none', cursor: 'pointer', padding: '2px', display: 'flex', alignItems: 'center' }}
+              >
+                <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
               </button>
+            )}
+            <button style={{ color: 'var(--color-text-muted)', fontSize: '11px', background: 'none', border: 'none', cursor: 'pointer', padding: '2px' }} title="Mehr Optionen">
+              <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><circle cx="12" cy="12" r="1"/><circle cx="12" cy="5" r="1"/><circle cx="12" cy="19" r="1"/></svg>
+            </button>
+          </div>
         </div>
       </div>
 

frontend/src/components/RightSidebar.tsx

@@ -24,12 +24,19 @@ const RightSidebar: React.FC<RightSidebarProps> = ({
   onBlockCategoryChange, onBlockSearch, onDragBlock,
   kiMessages, kiSuggestions, onKISend, onKISuggestionClick, kiLoading, onUpdateElement,
   onCollapse,
+  collapsed,
+  onToggleCollapse,
 }) => {
   return (
-    <aside className={`rightbar${className ? ' ' + className : ''}`} aria-label="Eigenschaften-Panels">
+    <aside className={`rightbar${className ? ' ' + className : ''}${collapsed ? ' rightbar-collapsed' : ''}`} aria-label="Eigenschaften-Panels">
       <button className="rightbar-close" aria-label="Rechte Leiste schließen" onClick={onCollapse}>
         <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="9 18 15 12 9 6"/></svg>
       </button>
+      {onToggleCollapse && (
+        <button className="rightbar-collapse-toggle" aria-label="Rechte Leiste ein-/ausklappen" onClick={onToggleCollapse} title="Rechte Leiste ein-/ausklappen">
+          <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="9 18 15 12 9 6"/></svg>
+        </button>
+      )}
       <div className="rightbar-tabs" role="tablist">
         {tabs.map((tab) => (
           <button
@@ -49,7 +56,7 @@ const RightSidebar: React.FC<RightSidebarProps> = ({
 
       <div className="rightbar-content">
         <div className={`rightbar-panel${activePanel === 'tool' ? ' active' : ''}`} data-panel-content="tool">
-          {activePanel === 'tool' && <PropertiesPanel selectedElement={selectedElement} layers={layers} onUpdateProperty={(key, value) => {
+          {activePanel === 'tool' && <PropertiesPanel selectedElement={selectedElement} layers={layers} onDelete={selectedElement && onElementsDeleted ? () => onElementsDeleted([selectedElement.id]) : undefined} onUpdateProperty={(key, value) => {
           if (!selectedElement || !onUpdateElement) return;
           const updated = { ...selectedElement };
           if (key === 'x' || key === 'y' || key === 'width' || key === 'height') {

frontend/src/styles.css

@@ -2172,3 +2172,43 @@ body.drawer-open { overflow: hidden; }
 }
 .dashboard-share-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
 
+
+/* ─── Desktop Sidebar Collapse ─────────────────────────── */
+.rightbar-collapse-toggle {
+  position: absolute;
+  top: 8px;
+  right: 32px;
+  width: 24px;
+  height: 24px;
+  display: grid;
+  place-items: center;
+  background: var(--color-surface-2);
+  border: 1px solid var(--color-border);
+  border-radius: 4px;
+  cursor: pointer;
+  color: var(--color-text-muted);
+  z-index: 10;
+  transition: all var(--t-fast);
+}
+.rightbar-collapse-toggle:hover {
+  background: var(--color-surface-3);
+  color: var(--color-text);
+}
+.rightbar-collapse-toggle svg { width: 14px; height: 14px; }
+
+.app-body.right-collapsed .rightbar { width: 0; min-width: 0; overflow: hidden; border-left: none; }
+.app-body.right-collapsed .rightbar-tabs,
+.app-body.right-collapsed .rightbar-content,
+.app-body.right-collapsed .rightbar-close { display: none; }
+
+.leftbar-collapsed .tool-section,
+.leftbar-collapsed .leftbar-title,
+.leftbar-collapsed .leftbar-footer-btn:not(:first-child) { display: none; }
+.leftbar-collapsed .leftbar-header { justify-content: center; padding: 4px; border: none; }
+.leftbar-collapsed .leftbar-toggle svg { transform: rotate(180deg); }
+
+/* Tree drag & drop indicators */
+.tree-drag-before { border-top: 2px solid var(--color-primary); }
+.tree-drag-after { border-bottom: 2px solid var(--color-primary); }
+.tree-drag-inside { background: var(--color-surface-2); outline: 2px solid var(--color-primary); outline-offset: -2px; }
+.tree-dragging { opacity: 0.5; }

frontend/src/types/ui.types.ts

@@ -87,6 +87,18 @@ export interface LeftSidebarProps {
   onTemplateSelect?: (templateName: string | null) => void;
   onCollapse?: () => void;
   className?: string;
+  collapsed?: boolean;
+  onToggleCollapse?: () => void;
+  blocks?: BlockDefinition[];
+  onDragBlock?: (blockId: string) => void;
+  onBlockDrop?: (blockId: string, x: number, y: number) => void;
+  onBlockCategoryChange?: (cat: string) => void;
+  onBlockSearch?: (query: string) => void;
+  onRenameBlock?: (id: string, name: string) => void;
+  onDuplicateBlock?: (id: string) => void;
+  onDeleteBlock?: (id: string) => void;
+  onSvgImport?: (svg: string, name: string, category: string) => void;
+  onSaveGroupAsBlock?: (name: string) => void;
 }
 
 export interface CanvasAreaProps {
@@ -160,12 +172,15 @@ export interface RightSidebarProps {
   onUpdateElement?: (el: CADElement) => void;
   className?: string;
   onCollapse?: () => void;
+  collapsed?: boolean;
+  onToggleCollapse?: () => void;
 }
 
 export interface PropertiesPanelProps {
   selectedElement: CADElement | null;
   layers: CADLayer[];
   onUpdateProperty: (key: string, value: unknown) => void;
+  onDelete?: () => void;
 }
 
 export interface LayerPanelProps {