Update app.py

app.py

@@ -218,13 +218,11 @@ with gr.Blocks(title="ARF v4 Demo") as demo:
     history_btn.click(fn=lambda: decision_history[-10:], outputs=decision_output)
 
 # ========================= Mount FastAPI under /api =========================
-
-# Mount FastAPI under /api
+# This mounts the Gradio interface onto the FastAPI app.
+# The resulting `app` is a FastAPI application that serves both:
+# - The API at `/api` (and its subpaths)
+# - The Gradio UI at the root `/`
 app = gr.mount_gradio_app(fastapi_app, demo, path="/api")
 
-# This starts the server and keeps it alive
-if __name__ == "__main__":
-    demo.queue().launch(server_name="0.0.0.0", server_port=7860)
-    
-# Note: No manual server start. Hugging Face will serve this `app` (which is a FastAPI app with Gradio mounted)
-# and the Gradio interface will be at the root, API endpoints under /api.
+# Note: No manual server start! The Dockerfile will run uvicorn on this `app` object.
+# Make sure your Dockerfile's CMD is: CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]