Strategy-A freshness re-validation rebuilt 8501 from merged commit 094b5e2 and
re-ran staging_check; E2E C9a/C9b fail (Plane "In Progress"/started webhook ->
"no pipeline action", no task/branch/analyst-job). Machine verdict FAILED ->
rollback to development. Prod (8500) untouched.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>