Rename hourly activity definitions to daily stabilize phase (DEC-005)

Crons were already daily; align file names, ids (coulomb-daily-*), rule labels,
and cross-references. Old hourly definitions disabled on activity-core sync.
Kept hourly-ci-health-escalation as bootstrap-only (disabled).

activity-definitions/daily-metrics-health-sweep.md

@@ -0,0 +1,42 @@
+---
+id: coulomb-daily-metrics-health-sweep
+name: Daily Metrics Health Sweep (coulomb-loop backup)
+enabled: false
+owner: coulomb-loop
+governance: coulomb_social
+status: proposed
+trigger:
+  type: cron
+  cron_expression: "0 6 * * *"
+  timezone: Europe/Berlin
+  misfire_policy: skip
+context_sources:
+  - type: kaizen
+    query: discover_kaizen_projects
+    params:
+      marker: .kaizen/metrics
+      roster: /home/worsch/coulomb-loop/loops/kaizen-stack/roster.yaml
+    bind_to: context.projects
+---
+
+# Daily Metrics Health Sweep (backup)
+
+Stabilize-phase backup per LOOP-WP-0002 T07. Primary path is event-driven
+`low-success-rate-review`; enable only if the event bus is down.
+
+```rule
+id: flag-low-success-daily
+for_each: context.projects
+bind_as: p
+condition: 'context.p.summary.success_rate < 0.8 and context.p.summary.execution_count >= 5'
+action:
+  task_template: "Review {context.p.agent} success rate on {context.p.repo}"
+  description: |
+    Agent metrics below threshold on {context.p.repo}.
+    kaizen-agentic metrics show <agent>
+    kaizen-agentic metrics optimize <agent>
+    Load agents/agent-optimization.md for review.
+  target_repo: context.p.repo
+  priority: high
+  labels: ["kaizen", "quality-escalation", "coulomb-loop", "backup"]
+```