Enforce continuous validation

docs/roadmap/implementation.md

@@ -1046,6 +1046,8 @@ stage matrices only after the focused regression protections exist.
 exercise the local equivalents of every job, prove failure propagation to release
 eligibility, and inspect the final suite for duplicated matrices and lost cases.
 
+**Status:** Completed.
+
 ## Stage 32 — Reconcile lifecycle/analyze documentation and close the remediation
 
 **Read first:** `audit-findings.md` lines 3229–3255 (ARC-002, merged into