Stable Release Publication ran every 15 minutes (96 runs a day, each
checking out full history, setting up node and buildx, logging into
Docker Hub, and taking the release-signing environment) only because the
sequencer held a failed run for a 15-minute backoff that the failure
event could never satisfy, so the cron was what actually retried.
Drop the backoff: the reconcile pass started by a failed Stable Release
reruns its failed jobs right away. MAX_ATTEMPTS burning, oldest-first
retry ordering, the attempt-entry check, and the needs_retarget repair
stay. The schedule trigger goes; workflow_run and workflow_dispatch
remain the recovery paths.
The shared stable-release concurrency group cannot deadlock: the rerun
waits as pending behind this job, and the sequencer only confirms the
new attempt is queued before it exits and frees the group.