fix: Remove frontend dependency from wildcard route

backend/src/server.ts

@@ -52,10 +52,8 @@ app.get('/health', (_req, res) => {
 });
 
 
-const frontendPath = path.join(__dirname, '../../frontend/dist');
-app.use(express.static(frontendPath));
 app.get('*', (_req, res) => {
-  res.sendFile(path.join(frontendPath, 'index.html'));
+  res.json({ message: 'RouteWave API (Backend Only)' });
 });