- 🐛 concurrent global and regional builds shared `release/`, so picking the newest ISO could apply the wrong region suffix
- ✅ cover the per-build output directory and its cleanup
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- 🛡️ fail a regional build whose profile lacks `skel`, instead of shipping an ISO that silently skips the advertised input defaults
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>