feat: advance LOOP-WP-0002/0003/0004 without activity-core blockers

Document event payload contract, draft disabled ActivityDefinitions for
CI/regulator/registry hygiene, initialize loop health snapshots and
regulator dashboard, record DEC-005 kaizen-stack promotion, and close
supplier-independent workplan tasks.

docs/decisions/DEC-005-kaizen-stack-cadence-promotion.md

@@ -0,0 +1,34 @@
+# DEC-005 — Kaizen Stack Cadence Promotion
+
+**Status:** accepted
+**Date:** 2026-06-18
+**Owner:** Bernd (Coulomb operator)
+**Workplan:** LOOP-WP-0001 T08, LOOP-WP-0004 T06
+
+---
+
+## Decision
+
+Promote **kaizen-improvement-stack** from `bootstrap` (hourly) to `stabilize` (daily).
+
+## Evidence
+
+- 3/3 consecutive hourly E2E cycles across pilot roster (see `loops/kaizen-stack/bootstrap-log.md`)
+- `manual_rescues == 0`
+- activity-core `activity_runs` show 6+3+3 tasks per cycle
+- Session-close metrics on all 3 pilots
+
+## New cadence (Europe/Berlin)
+
+| Step | Cron |
+|------|------|
+| metrics optimize | `0 8 * * *` |
+| coach orientation | `0 9 * * *` |
+| optimization review | `0 10 * * *` |
+
+Updated: pilot `schedule.yml`, `loops/kaizen-stack/cadence.yml`, activity-definitions, Temporal schedules.
+
+## Related
+
+- ADR-003 cadence ramp policy
+- `loops/regulator/session-template.md`

docs/integrations/activity-core-handoff.md

@@ -36,4 +36,11 @@ kaizen-agentic metrics optimize --target /home/worsch/kaizen-agentic
 2. `hourly-coach-orientation`
 3. `hourly-optimization-review`
 4. `hourly-metrics-health-sweep`
-5. `low-success-rate-review` (after KAIZEN-WP-0008 T03)
+5. `low-success-rate-review` (after activity-core R1 event-payload resolver)
+6. `hourly-registry-hygiene-sweep` (after shell resolver)
+7. `hourly-loop-health-collector` (after instruction executor)
+
+## Blocked on activity-core
+
+- R1 `event-payload` — hub message `d561ebd7`, task `18afc44a`
+- Shell `reuse_surface_report_gaps` — LOOP-WP-0003 T02 definition ready (disabled)