Keep Create Object button for custom objects

src/components/ControlPanel.tsx

@@ -1,4 +1,4 @@
-import type { ConditionKind, Entrance, LayoutState, RoomConfig } from '../types';
+import type { ConditionKind, Entrance, FurnitureConfig, LayoutState, RoomConfig } from '../types';
 
 interface ControlPanelProps {
   state: LayoutState;
@@ -37,6 +37,25 @@ export function ControlPanel({
     onStateChange({ ...state, entrance: { x: 20, y: 20, width: 20, height: 20 } });
   };
 
+  const createObject = () => {
+    const id = 'obj_' + Date.now();
+    const newItem: FurnitureConfig = {
+      id,
+      name: 'Object ' + (state.furniture.length + 1),
+      type: 'custom',
+      shape: { type: 'rectangle', x: 100, y: 100, width: 50, height: 50 },
+      conditions: [
+        { kind: 'walk_to_and_sit', weight: 1 },
+        { kind: 'accessible', weight: 1 },
+      ],
+      color: '#90caf9',
+      lockedForOptimization: false,
+      placed: true,
+    };
+    onStateChange({ ...state, furniture: [...state.furniture, newItem] });
+    onSelect(id);
+  };
+
   const toggleLock = () => {
     if (!selectedId) return;
     const updated = state.furniture.map((f) =>
@@ -123,6 +142,9 @@ export function ControlPanel({
             <button onClick={placeEntrance} style={{ marginLeft: 8 }}>
               Place Entrance
             </button>
+            <button onClick={createObject} style={{ marginLeft: 8 }}>
+              Create Object
+            </button>
           </div>
           {state.entrance && (
             <div style={{ marginTop: 8 }}>