You'll notice
Model refusal fallback retries can now trigger a system notification
What
Claude Code has a model-refusal-fallback mechanism that retries a turn on a different model after the original model refuses to respond. That mechanism is now included in the list of notification kinds (alongside things like quota_auto_resume_disabled) that can trigger a desktop or system notification.
Why
This lets you get notified when Claude Code has to retry your request on a different model due to a refusal, rather than that fallback happening silently.