cms-stuck-pr-triage

Diagnose "stuck" or "repeatedly failing" runs of cms-publish-loop-host.yml, cms-publish-loop-prod.yml, canary-prod.yml, or any workflow that opens a cms/<col>/<slug> PR via Decap and waits for it to auto-merge. The workflow itself is rarely the bug — almost always the cause is a long-lived BLOCKED PR whose CI ran on a stale base, or a PR stuck BLOCKED with all checks green. Use when the user says a publish-loop is "stuck", cancels & restarts a run, or asks why a daily canary keeps failing.