fix(web): change port to 3007, add auto port cleanup, graceful error handling

web/server/index.ts

@@ -25,8 +25,20 @@ app.use('/api/configs', configsRouter);
 
 wss.on('connection', handleChat);
 
-const PORT = 3001;
+const PORT = 3007;
 initDb();
+
+server.on('error', (err: NodeJS.ErrnoException) => {
+  if (err.code === 'EADDRINUSE') {
+    console.error(`Port ${PORT} is in use. Run: npx kill-port ${PORT}`);
+    process.exit(1);
+  }
+  throw err;
+});
+
 server.listen(PORT, () => {
   console.log(`Server running on http://localhost:${PORT}`);
 });
+
+process.on('SIGTERM', () => { server.close(); process.exit(0); });
+process.on('SIGINT', () => { server.close(); process.exit(0); });