fix: disable API docs to prevent gradio_client schema crash

show_api=False prevents /info endpoint from triggering the
TypeError in gradio_client json_schema_to_python_type.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -40,4 +40,5 @@ app.launch(
     share=False,
     inbrowser=False,
     auth=authenticate_user,
+    show_api=False,
 )