feat: Implement Cross-CLI Sync Panel for MCP servers

- Added CrossCliSyncPanel component for synchronizing MCP servers between Claude and Codex.
- Implemented server selection, copy operations, and result handling.
- Added tests for path mapping on Windows drives.
- Created E2E tests for ask_question Answer Broker functionality.
- Introduced MCP Tools Test Script for validating modified read_file and edit_file tools.
- Updated path_mapper to ensure correct drive formatting on Windows.
- Added .gitignore for ace-tool directory.

ccw/src/core/a2ui/A2UIWebSocketHandler.ts

@@ -222,20 +222,30 @@ export class A2UIWebSocketHandler {
     });
 
     const req = http.request({
-      hostname: 'localhost',
+      hostname: '127.0.0.1',
       port: DASHBOARD_PORT,
       path: '/api/hook',
       method: 'POST',
+      timeout: 2000,
       headers: {
         'Content-Type': 'application/json',
         'Content-Length': Buffer.byteLength(body),
       },
     });
 
+    // Fire-and-forget: don't keep the process alive due to an open socket
+    req.on('socket', (socket) => {
+      socket.unref();
+    });
+
     req.on('error', (err) => {
       console.error(`[A2UI] Failed to forward surface ${surfaceUpdate.surfaceId} to Dashboard:`, err.message);
     });
 
+    req.on('timeout', () => {
+      req.destroy(new Error('Request timed out'));
+    });
+
     req.write(body);
     req.end();
 

ccw/src/core/auth/middleware.ts

@@ -90,6 +90,7 @@ const LOCALHOST_PUBLIC_PATHS = [
   '/api/litellm-api/providers',
   '/api/litellm-api/endpoints',
   '/api/health',
+  '/api/a2ui/answer',
 ];
 
 /**