Update app.py

app.py

@@ -96,7 +96,7 @@ with gr.Blocks(title="去背服務測試") as app:
             refresh_btn = gr.Button("🔄 Refresh Stats")
             refresh_btn.click(get_system_stats_ui, outputs=stats_output)
             # Auto-load stats when page opens
-            demo.load(get_system_stats_ui, outputs=stats_output)
+            app.load(get_system_stats_ui, outputs=stats_output)
 
     # Hidden API Route for React Frontend
     # The frontend calls this via client.predict("/status")