app_test.py

#!/usr/bin/env python3
"""
Minimal Gradio test to verify Space deployment
"""
import gradio as gr

def test_function(text):
    return f"Echo: {text}"

with gr.Blocks(title="FBMC Test") as demo:
    gr.Markdown("# Minimal Test App")
    with gr.Row():
        input_text = gr.Textbox(label="Input")
        output_text = gr.Textbox(label="Output")
    btn = gr.Button("Test")
    btn.click(fn=test_function, inputs=input_text, outputs=output_text)

if __name__ == "__main__":
    demo.launch(server_name="0.0.0.0", server_port=7860)