Audit registered collection changes by identity

docs/roadmap/implementation.md

@@ -160,6 +160,8 @@ representative cases. Existing public diff/comparator tests must remain atomic.
 
 ## Stage 4 — Integrate registered comparison and paired record snapshots
 
+**Status:** Complete. Focused resolution and identity tests passed, including repair and helper-target checks.
+
 **Scope:** auditing, record validation, and before/after capture.
 
 1. Pass `request.sequencePolicy` through `resolveLoadInput` to `runResolution`;