fix: add error handler and increase body size limits

src/server/app.ts

@@ -26,7 +26,9 @@ app.use(cors({
     methods: ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'],
     allowedHeaders: ['Content-Type', 'Authorization', 'x-organization-id']
 }));
-app.use(express.json());
+
+app.use(express.json({ limit: '50mb' }));
+app.use(express.urlencoded({ limit: '50mb', extended: true }));
 import { extractUser } from './middleware/authMiddleware.js';
 app.use(extractUser);
 
@@ -72,4 +74,10 @@ app.use((req, res, next) => {
     res.sendFile(path.join(distPath, 'index.html'));
 });
 
+// Error handler
+app.use((err: any, req: express.Request, res: express.Response, next: express.NextFunction) => {
+    console.error('Express Error:', err);
+    res.status(500).json({ error: 'Internal server error' });
+});
+
 export default app;