A long orchestrator sweep sometimes survives its concurrency group: the occupant sits on queued while its matrix waits for runners, cancel-in-progress does not reap it, and the newer run parks on pending until someone cancels the sweep by hand. PR #380 sat that way for nine hours behind a run from the previous commit.
entry-cancel-superseded.yml cancels those leftovers through the API. The group stays primary and untouched: it reaps within seconds and needs no runner, so the fallback normally arrives to find nothing left to do. It carries no concurrency group of its own, because the run holding a group cannot be the run that frees it.
Selection mirrors what the group would have done: cancel every matched run except the newest in the group instance, keyed the way the group is keyed. Not by head SHA, which goes stale while the job waits for a runner and would cancel the newest commit's CI while sparing the stale one. INCLUDE_PATHS keeps the sweep inside the group's own members, so a push to main cannot take the cron workflows with it.
deleted_branch_runs.sh becomes branch_runs.sh, since it now also serves live branches, and the shared parts move to lib.sh. A rejected cancel is logged and the remaining runs are still attempted; only a denied token fails the job.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5