[ai] Branch Cleanup workflow_dispatch batch=stale always fails (exit 2)

[github-actions]

Problem

.github/workflows/branch-cleanup.yml offers a stale batch option in both its workflow_dispatch input (options: [safe, stale, review]) and its push-sentinel regex ([run-cleanup:safe|stale|review]), but scripts/maintenance/branch-cleanup-delete.sh only implements safe and review (there is no STALE_BRANCHES array, and docs/branch-cleanup-matrix.csv has no STALE verdict — only KEEP, CLOSE-SAFE, REVIEW).

Selecting stale always falls through to the script's *) usage branch and exits 2, failing the run.

Evidence

• Failing run: https://github.com/groupthinking/EventRelay/actions/runs/34392035516 (workflow_dispatch, batch=stale, dry_run=1), exit code 2:

  usage: scripts/maintenance/branch-cleanup-delete.sh {safe|review}   (prefix DRY_RUN=1 to preview)
  ##[error]Process completed with exit code 2.
  

• scripts/maintenance/branch-cleanup-delete.sh case statement only handles safe/review:

  case "${1:-}" in
    safe)   for b in "${SAFE_BRANCHES[@]}";   do archive_and_delete "$b"; done ;;
    review) for b in "${REVIEW_BRANCHES[@]}"; do archive_and_delete "$b"; done ;;
    *) echo "usage: $0 {safe|review}   (prefix DRY_RUN=1 to preview)"; exit 2 ;;
  esac

Fix

Remove the unimplemented stale option from both trigger paths in branch-cleanup.yml (dispatch options: and the sentinel regex/sed), so the UI/sentinel only ever offers batches the script supports.

Generated by pr-iteration-loop · copilot · auto · 165.9 AIC · ⌖ 9.04 AIC · ⊞ 12.1K · ◷

• expires on Sep 16, 2026, 7:04 PM UTC

[linear-code]

GRV-514