f06d489bbc
Keeps newest KEEP (default 7) MinIO backup object dirs per job, pruning the rest by full path (object dirs are multipart, not real .zip files). Deployed to /usr/local/bin and run daily 04:00 UTC via /etc/cron.d/prune-backups -> /var/log/prune-backups.log. Closes the +3G/day unbounded-backup growth flagged in the 2026-06-28 cleanup. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>