fix: use uvicorn directly

start.sh

@@ -63,6 +63,6 @@ else
     echo "✅ GITHUB_TOKEN set"
 fi
 
-# Start the application
-echo "🎯 Starting application on port ${PORT:-7860}"
-exec python app.py
+# Start the application with uvicorn directly
+echo "🎯 Starting uvicorn on port ${PORT:-7860}"
+exec uvicorn app:app --host 0.0.0.0 --port ${PORT:-7860} --log-level info