Troubleshooting fallback

• Parse/contract failure: repair source or identifiers.
• Import failure: use the startup traceback and ComfyUI's exact Python.
• Clean import but absent /object_info: repair registration or install path.
• Registered but execution fails: inspect traceback, shapes/types, and exact dependency versions.
• Search unavailable: continue only if local catalog and documented API settle the contract; otherwise stop instead of inventing an integration.

Restart and rediscover after every repair.