Polecats were creating GitHub PRs instead of using gt done to submit
to the Refinery. Added clear conditional language:
- If repo is steveyegge/beads or steveyegge/gastown: NEVER create PRs
- Polecats use gt done → Refinery merges
- Crew workers push directly to main
- PRs are for external contributors only
This fixes a prompting gap that led to PR #292 being created incorrectly.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>