- Make container prune run perform deletions by default (workflow_dispatch default now false for dry_run)
- Enhance prune script to estimate candidate and deleted image sizes (Docker Hub best-effort; GHCR manifest fallback)
- Emit machine-readable summary (`prune-summary.env`) and human-readable summary to the workflow run
- Upload logs + summary as artifacts and expose `space_saved` in the run summary
Why:
- Previously the scheduled job used dry-run by default and only logged candidates; this change makes scheduled pruning effective and provides visibility into storage reclaimed.
Impact:
- Runs will now remove eligible images by default (use dry_run=true to test)
- Size calculations are best-effort and may be incomplete if registry APIs do not expose sizes
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