Rename app to demo for Hugging Face Spaces compatibility

app.py

@@ -211,7 +211,7 @@ def create_interface():
 
 
 # Создание приложения
-app = create_interface()
+demo = create_interface()
 
 # Запуск приложения
 if __name__ == "__main__":
@@ -221,7 +221,7 @@ if __name__ == "__main__":
     host = os.getenv("GRADIO_HOST") or os.getenv("GRADIO_SERVER_NAME") or "0.0.0.0"
     port = int(os.getenv("PORT") or os.getenv("GRADIO_SERVER_PORT") or 7860)
     
-    app.queue(api_open=False).launch(
+    demo.queue(api_open=False).launch(
         server_name=host,
         server_port=port,
         share=share_flag,