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.

loops/regulator/health-model.md

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+# Loop Health Model
+
+Per LOOP-WP-0004 T01. Metrics appended to `loops/<loop-id>/health.jsonl`.
+
+## Per-loop metrics
+
+| Field | Source |
+|-------|--------|
+| `tasks_created` | state-hub / activity-core |
+| `tasks_completed` | state-hub task status |
+| `manual_rescues` | `bootstrap-log.md` entries |
+| `false_positive_rate` | duplicate tasks / total |
+| `agent_success_rate` | `.kaizen/metrics/<agent>/summary.json` |
+| `mean_session_time_sec` | metrics executions |
+
+## Per-repo rotation (ADR-004)
+
+| Field | Source |
+|-------|--------|
+| `saturation_score` | `rotation-policy.yml` signals |
+| `marginal_gain` | hub progress events + git activity proxy |
+
+See `rotation-policy.yml` for thresholds.

loops/regulator/rotation-policy.yml

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+version: "1"
+adr: ADR-004
+status: design  # implementation in LOOP-WP-0004 T09
+
+window_cycles: 14
+signals_required: 3  # of 4 below
+
+signals:
+  quality_plateau:
+    metric: avg_quality_delta
+    threshold: 0.02
+    comparison: prior_window
+  success_stable:
+    metric: success_rate
+    threshold: 0.85
+    operator: gte
+  optimizer_stall:
+    metric: new_actionable_recommendations
+    threshold: 0
+    operator: eq
+  marginal_gain:
+    metric: progress_events_or_merged_changes
+    threshold: 0
+    operator: eq
+
+actions_on_saturation:
+  - set_roster_status: saturated
+  - disable_schedule_agent: optimization
+  - promote_next_from: expansion_queue
+  - record_decision: state-hub
+  - elevate_priority: optimization_session
+
+revisit_saturated:
+  cadence: monthly
+  triggers:
+    - ci_regression
+    - new_active_workstream
+    - manual_operator_request

loops/regulator/state-machine.md

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+# Cadence State Machine
+
+```
+bootstrap (hourly) ──promote──▶ stabilize (daily) ──promote──▶ operate (weekly)
+        ▲                              │                            │
+        └──────── demote (noise/SLA) ──┴────────────────────────────┘
+```
+
+Promotion requires LOOP-WP-0004 regulator approval + ADR-003 exit criteria.
+
+## Repo rotation (ADR-004, parallel track)
+
+```
+active ──saturate──▶ saturated ──revisit/monthly──▶ active
+   │
+   └── promote from expansion_queue when saturation frees a slot
+```
+
+Rotation is recommendation-first during bootstrap.