feat: complete LOOP-WP-0003 and LOOP-WP-0004

Registry hygiene: 3-round pilot bootstrap smoke, helix_forge rollout
expansion, daily cadence promotion (DEC-006). Loop regulator: daily
collector and weekly session cadence (DEC-007), rotation runbook (T09).

loops/registry-hygiene/round-robin-state.json

@@ -1,6 +1,8 @@
 {
   "cursor_domain": "custodian",
   "cursor_index": 0,
-  "last_run": null,
-  "last_batch": []
+  "last_run": "2026-06-18T11:22:00Z",
+  "last_batch": ["kaizen-agentic", "the-custodian", "activity-core"],
+  "rounds_completed": 3,
+  "duplicate_tasks": 0
 }