Register kaizen.metrics.recorded event type for activity-core catalog (T03)

Producer-owned event-types/kaizen.metrics.recorded.md unblocks ACTIVITY-WP-0011
registry gate. Documents schema ownership and sync path for activity-core.

docs/integrations/kaizen-metrics-recorded-event.md

@@ -2,6 +2,10 @@
 
 **Status:** implemented — `kaizen-agentic metrics record --emit-event`
 
+**Registry:** `event-types/kaizen.metrics.recorded.md` (producer-owned, synced via
+activity-core `make sync-event-types` with `ACTIVITY_DEFINITION_DIRS` including
+this repo)
+
 Emitted after a successful metrics append when `--emit-event` is set. Default
 off for backward compatibility.
 

event-types/kaizen.metrics.recorded.md

@@ -0,0 +1,65 @@
+---
+type_id: kaizen.metrics.recorded
+version: "1.0"
+publisher: kaizen-agentic
+governance: publisher-declared
+status: active
+---
+
+# kaizen.metrics.recorded
+
+## Intent
+
+Emitted when a project records agent execution metrics via
+`kaizen-agentic metrics record --emit-event`. Signals that rolling performance
+summary changed and may trigger quality-escalation ActivityDefinitions.
+
+**Owning repo:** `kaizen-agentic` — schema changes require supplier review.
+
+## When Published
+
+- CLI: `kaizen-agentic metrics record <agent> --emit-event` after successful append
+- Not emitted when append is skipped (duplicate idempotency key)
+- NATS subject: `activity.kaizen.metrics.recorded`
+
+## Attributes
+
+| Name | Type | Required | Description |
+|---|---|---|---|
+| agent | string | yes | Agent name from `metrics record <agent>` |
+| project | string | yes | Repo slug (`KAIZEN_PROJECT_SLUG` or directory basename) |
+| summary.success_rate | float | yes | Rolling success rate from `summary.json` after append |
+| summary.execution_count | integer | yes | Total execution count |
+| summary.avg_quality | float | no | Average quality score (maps from `avg_quality_score`) |
+
+## Example Payload
+
+```json
+{
+  "id": "550e8400-e29b-41d4-a716-446655440000",
+  "type": "kaizen.metrics.recorded",
+  "version": "1.0",
+  "timestamp": "2026-06-18T12:00:00Z",
+  "publisher": "kaizen-agentic",
+  "attributes": {
+    "agent": "coach",
+    "project": "kaizen-agentic",
+    "summary": {
+      "success_rate": 0.75,
+      "execution_count": 12,
+      "avg_quality": 0.81
+    }
+  }
+}
+```
+
+## Consumer Notes
+
+- **activity-core**: `event-payload` resolver binds `attributes` → `context.metrics`
+  for rules such as `flag-low-success-rate`
+- **coulomb-loop**: `low-success-rate-review` (LOOP-WP-0002) — primary reactive path
+
+## Related
+
+- `docs/integrations/kaizen-metrics-recorded-event.md`
+- `coulomb-loop/loops/quality-escalation/event-payload.md`