fix: auto-refresh file tree after AI finishes streaming

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/chat/ChatView.tsx

@@ -443,6 +443,8 @@ export function ChatView({ sessionId, initialMessages = [], modelName, initialMo
         setPermissionResolved(null);
         setPendingApprovalSessionId('');
         abortControllerRef.current = null;
+        // Notify file tree to refresh after AI finishes
+        window.dispatchEvent(new CustomEvent('refresh-file-tree'));
       }
     },
     [sessionId, isStreaming, setStreamingSessionId, setPendingApprovalSessionId, mode, currentModel]

src/components/project/FileTree.tsx

@@ -137,6 +137,13 @@ export function FileTree({ workingDirectory, onFileSelect, onFileAdd }: FileTree
     fetchTree();
   }, [fetchTree]);
 
+  // Auto-refresh when AI finishes streaming
+  useEffect(() => {
+    const handler = () => fetchTree();
+    window.addEventListener('refresh-file-tree', handler);
+    return () => window.removeEventListener('refresh-file-tree', handler);
+  }, [fetchTree]);
+
   // Build default expanded set from first-level directories
   const defaultExpanded = new Set(
     tree.filter((n) => n.type === "directory").map((n) => n.path)