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.

loops/registry-hygiene/session-template.md

@@ -0,0 +1,27 @@
+# scope-analyst hygiene session template
+
+LOOP-WP-0003 T03 — standard task for registry/orientation hygiene.
+
+## Prepare
+
+```bash
+kaizen-agentic schedule prepare scope-analyst --target <pilot-repo-root>
+```
+
+## Session steps
+
+1. Read `SCOPE.md` and `INTENT.md` in target repo
+2. Compare scope to actual repo purpose; update if stale (>90d or drift)
+3. Run `reuse-surface validate` in target repo
+4. If registry gaps: `reuse-surface establish --publish-check` (when touching registry)
+5. If `sbom_age_days > 30`: link to activity-core `weekly-sbom-staleness` — do not rescan
+6. File state-hub progress event on hygiene completion
+
+## Labels
+
+`fleet-hygiene`, `coulomb-loop`, `scope-analyst`
+
+## Reference
+
+- Signals: `loops/registry-hygiene/signals.yml`
+- Rollout: `loops/registry-hygiene/rollout.yaml`