First restoring.

frontend/src/components/MindMap.tsx

@@ -4,7 +4,7 @@ import 'reactflow/dist/style.css';
 import { useProjectStore } from '../store/useProjectStore';
 
 const MindMap: React.FC = () => {
-    const { projects, selectedKey } = useProjectStore();
+    const { projects } = useProjectStore();
 
     // Filter nodes based on selection (e.g., show children of selected node)
     // For demo, just showing all projects as nodes