- Add XBPS build and sign steps to CI workflow
- Add XBPS publication as independent gate (requires manual trigger)
- Track format availability in release notes
- Update release-footer.md with XBPS install instructions
- Add --available/--withheld arguments to extract_changelog.py
- Attach XBPS artifacts to Gitea release
- Clean up XBPS signing key material after use
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>