Two small server-side tweaks so the endpoint matches the UI policy:
- Rename is refused (409) for promoted/rejected candidates — they're settled
history; the UI already hides Rename for them, now the server enforces it too.
- Name is capped at 160 chars before save, so an accidental pasted paragraph
can't wreck the queue layout.
Tests extended: 300-char name truncates to 160; renaming a promoted candidate
→ 409. 225 pytest + 11 vitest green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
thejayman77
c4ea329f9b