feat(F-098): completed feature

work/artifacts/F-098/reviewer.json

@@ -0,0 +1,12 @@
+{
+  "feature_id": "F-098",
+  "agent": "reviewer",
+  "verdict": "APPROVED",
+  "summary": "The fix addresses the actual PostgreSQL FK mismatch without changing schema or weakening valid identity-user audit links.",
+  "evidence": [
+    "Backoffice IDs are checked against identity_users before being used as updated_by",
+    "Authenticated AI settings PATCH smoke test returns HTTP 200",
+    "Settings GET remains HTTP 200 after cleanup"
+  ],
+  "timestamp": "2026-08-20T20:38:30Z"
+}