Add dummy GPU function for ZeroGPU

app.py

@@ -20,9 +20,17 @@ nltk.download('omw-1.4')
 from Backend.api import app as fastapi_app
 
 # Create a minimal Gradio UI to satisfy ZeroGPU's requirements
+@spaces.GPU
+def dummy_gpu_task():
+    # ZeroGPU requires at least one GPU function to exist
+    return "GPU is working!"
+
 with gr.Blocks() as demo:
-    gr.Markdown("# Math Search Engine is running!")
+    gr.Markdown("# Math Search Engine API")
     gr.Markdown("The React frontend is served via FastAPI at the root URL.")
+    btn = gr.Button("Ping GPU")
+    out = gr.Textbox()
+    btn.click(dummy_gpu_task, outputs=out)
 
 # Mount FastAPI onto the Gradio app (or vice versa)
 # We serve Gradio at /gradio, and the rest is our FastAPI app (which serves React)