Fix application multiple restart issue on HuggingFace Spaces

- Add 2-second startup delay to prevent rapid restart loops
- Disable reload mode for production stability
- Set single worker mode for HF Spaces environment
- Reduce uvicorn log noise with warning level

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -47,12 +47,18 @@ if __name__ == "__main__":
         logger.debug(f"   {var}: {masked}")
 
     try:
+        # Add startup delay to prevent rapid restart loops
+        import time
+        time.sleep(2)  # Give HF Spaces time to stabilize
+
         uvicorn.run(
             app,
             host="0.0.0.0",
             port=port,
             log_level="warning",  # Reduce uvicorn noise, our dual logger handles app logs
-            access_log=False      # Reduce access log spam
+            access_log=False,     # Reduce access log spam
+            reload=False,         # Never use reload in production
+            workers=1             # Single worker for HF Spaces
         )
     except Exception as e:
         logger.critical(f"💥 Application startup failed: {e}")