fix: open port before heavy initializations to prevent 502

apps/api/src/index.ts

@@ -338,17 +338,21 @@ server.setErrorHandler((error, request, reply) => {
 // ── Start Server ───────────────────────────────────────────────────────────────
 const start = async () => {
     try {
-        await setupRateLimit();
-        startCleanupCron();
         const port = parseInt(process.env.PORT || '8080');
         const isGateway = process.env.IS_GATEWAY === 'true' || process.env.HF_SPACE_ID !== undefined;
+        
+        // 1. Listen IMMEDIATELY so Railway sees the port as open
+        await server.listen({ port, host: '0.0.0.0' });
+        logger.info(`🚀 Server listening on http://0.0.0.0:${port}`);
         logger.info(`[STARTUP] Mode: ${isGateway ? 'GATEWAY (Forwarding Only)' : 'DIRECT (Processing)'}`);
-        logger.info(`[STARTUP] Forwarding to: ${process.env.RAILWAY_INTERNAL_URL || 'NONE'}`);
 
-        await server.listen({ port, host: '0.0.0.0' });
-        logger.info(`Server listening on http://0.0.0.0:${port}`);
+        // 2. Initialize background services
+        await setupRateLimit().catch(err => logger.error('[STARTUP] Rate limit setup failed:', err));
+        startCleanupCron();
+        
+        logger.info('[STARTUP] Background services initialized.');
     } catch (err) {
-        logger.error(err);
+        logger.error('[STARTUP] FATAL ERROR:', err);
         process.exit(1);
     }
 };