fix: update backend response for /list route (#186)

* update structure of list directory response

* fmt

frontend/src/components/ui/folder-picker.tsx

@@ -66,7 +66,14 @@ export function FolderPicker({
 
     try {
       const result = await fileSystemApi.list(path);
-      setEntries(result.entries || []);
+
+      // Ensure result exists and has the expected structure
+      if (!result || typeof result !== 'object') {
+        throw new Error('Invalid response from file system API');
+      }
+      // Safely access entries, ensuring it's an array
+      const entries = Array.isArray(result.entries) ? result.entries : [];
+      setEntries(entries);
       const newPath = result.current_path || '';
       setCurrentPath(newPath);
       // Update manual path if we have a specific path (not for initial home directory load)
@@ -75,6 +82,8 @@ export function FolderPicker({
       }
     } catch (err) {
       setError(err instanceof Error ? err.message : 'Failed to load directory');
+      // Reset entries to empty array on error
+      setEntries([]);
     } finally {
       setLoading(false);
     }