Simplify: demo at module level for Gradio Spaces

app.py

@@ -369,14 +369,5 @@ def main():
 if __name__ == "__main__":
     main()
 
-# For Gradio Spaces - initialize demo at module level
-try:
-    demo = build_interface()
-except Exception as e:
-    print(f"Error initializing demo: {e}")
-    import traceback
-    traceback.print_exc()
-    # Fallback minimal demo
-    with gr.Blocks() as demo:
-        gr.Markdown("# Error")
-        gr.Markdown(f"Error: {str(e)}")
+# For Gradio Spaces - demo must be at module level
+demo = build_interface()