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.

activity-definitions/hourly-registry-hygiene-sweep.md

@@ -0,0 +1,47 @@
+---
+id: coulomb-hourly-registry-hygiene-sweep
+name: Hourly Registry Hygiene Sweep (coulomb-loop bootstrap)
+enabled: false
+owner: coulomb-loop
+governance: coulomb_social
+status: proposed
+trigger:
+  type: cron
+  cron_expression: "20 * * * *"
+  timezone: Europe/Berlin
+  misfire_policy: skip
+context_sources:
+  - type: state-hub
+    query: repo_sbom_status
+    params:
+      repos: pilot
+    bind_to: context.repos
+  - type: shell
+    query: reuse_surface_report_gaps
+    params:
+      roster: /home/worsch/coulomb-loop/loops/registry-hygiene/rollout.yaml
+      batch_size: 3
+    bind_to: context.gaps
+---
+
+# Hourly Registry Hygiene Sweep
+
+LOOP-WP-0003 T02 — round-robin batch from `rollout.yaml` (3 repos/hour).
+
+```rule
+id: hygiene-task-per-signal
+for_each: context.gaps
+bind_as: g
+condition: 'context.g.hygiene_signal != ""'
+action:
+  task_template: "Fleet hygiene: {context.g.signal} on {context.g.repo}"
+  description: |
+    Follow loops/registry-hygiene/session-template.md
+    kaizen-agentic schedule prepare scope-analyst --target {context.g.root}
+    reuse-surface validate
+  target_repo: context.g.repo
+  priority: medium
+  labels: ["fleet-hygiene", "coulomb-loop", "scope-analyst"]
+```
+
+`enabled: false` until `reuse_surface_report_gaps` shell resolver exists in activity-core.