Fix: Gradio app init for HF Spaces. Moved agent init and cleanup, removed demo.launch.

app.py

@@ -154,25 +154,13 @@ with gr.Blocks(title="A11y Expert") as demo:
 
 
 # --- App Launch ---
-if __name__ == "__main__":
-    # Register cleanup handler
-    atexit.register(cleanup_resources)
-    
-    # Start agent initialization in background thread
-    logger.info("🚀 Starting Gradio app with lazy agent initialization...")
-    init_thread = threading.Thread(target=initialize_agent_background, daemon=True)
-    init_thread.start()
-    
-    settings = get_settings()
-    logger.info("Launching Gradio interface...")
-    
-    try:
-        demo.launch(
-            server_name=settings.server_host,
-            server_port=settings.server_port,
-            show_error=True,
-        )
-    except KeyboardInterrupt:
-        logger.info("Received interrupt signal")
-    finally:
-        cleanup_resources()
+# Register cleanup handler
+atexit.register(cleanup_resources)
+
+# Start agent initialization in background thread
+logger.info("🚀 Starting Gradio app with lazy agent initialization...")
+init_thread = threading.Thread(target=initialize_agent_background, daemon=True)
+init_thread.start()
+
+# The demo.launch() call is intentionally omitted.
+# Hugging Face Spaces automatically finds and launches the Gradio Blocks object.