Bootstrap coulomb-loop engagement: governance, loops, and activity definitions.

Register with state-hub, accept DEC-001–004 and ADR-004 rotation policy, scaffold
pilot roster, hourly ActivityDefinition copies, and bootstrap log after schedule
init on three custodian pilot repos.

docs/integrations/activity-core-handoff.md

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+# activity-core Handoff — coulomb-loop Bootstrap
+
+**Customer:** coulomb-loop
+**Status:** ready for activity-core PR/issue
+
+## Prerequisites (done)
+
+- [x] Pilot roster: `loops/kaizen-stack/roster.yaml`
+- [x] `.kaizen/schedule.yml` on kaizen-agentic, the-custodian, activity-core
+- [x] ActivityDefinition copies in `coulomb-loop/activity-definitions/` (all `enabled: false`)
+
+## activity-core checklist
+
+- [ ] Implement or verify `discover_kaizen_scheduled_repos` with `roster` param
+- [ ] Extend `discover_kaizen_projects` with `roster` filter for pilot scope
+- [ ] Copy definitions from `coulomb-loop/activity-definitions/` to catalog
+- [ ] `make sync-activity-definitions`
+- [ ] Dry-run hourly chain (no `enabled: true` yet)
+- [ ] Enable `hourly-metrics-optimize` first after dry-run pass
+
+## Smoke commands (pilot)
+
+```bash
+kaizen-agentic schedule validate --target /home/worsch/kaizen-agentic
+kaizen-agentic schedule prepare coach --target /home/worsch/kaizen-agentic
+kaizen-agentic metrics optimize --target /home/worsch/kaizen-agentic
+```
+
+## Definition enable order
+
+1. `hourly-metrics-optimize`
+2. `hourly-coach-orientation`
+3. `hourly-optimization-review`
+4. `hourly-metrics-health-sweep`
+5. `low-success-rate-review` (after KAIZEN-WP-0008 T03)