WP-0004: ecosystem integration complete

Add Helix Forge correlation (HELIX_SESSION_UID env, metrics correlate),
artifact-store publish (metrics publish), activity-core ActivityDefinition
references, integration patterns docs, and canon/knowledge design artifacts.

docs/integrations/activity-definitions/low-success-rate-review.md

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+---
+id: kaizen-low-success-rate-review
+name: Low Agent Success Rate Review
+enabled: false
+owner: kaizen-agentic
+governance: custodian
+status: proposed
+trigger:
+  type: event
+  event_type: kaizen.metrics.recorded
+context_sources:
+  - type: event-payload
+    bind_to: context.metrics
+---
+
+# Low Agent Success Rate Review
+
+When a project agent's rolling success rate drops below 0.8, create a review
+task in issue-core for human or optimizer-agent follow-up.
+
+```rule
+id: flag-low-success-rate
+condition: 'context.metrics.summary.success_rate < 0.8 && context.metrics.summary.execution_count >= 5'
+action:
+  task_template: "Review {{context.metrics.agent}} success rate ({{context.metrics.summary.success_rate}})"
+  description: |
+    Agent {{context.metrics.agent}} in {{context.metrics.project}} has success_rate
+    below 0.8 over {{context.metrics.summary.execution_count}} executions.
+    Run: kaizen-agentic metrics show {{context.metrics.agent}}
+    Then: kaizen-agentic metrics optimize {{context.metrics.agent}}
+  target_repo: "{{context.metrics.project}}"
+  priority: high
+  labels: ["kaizen", "metrics", "review", "automated"]
+```
+
+**Threshold:** 0.8 success rate, minimum 5 executions (avoids noise on early pilots).
+
+**CLI mapping:** Event emitter is future work; manual check today:
+
+```bash
+kaizen-agentic metrics show <agent>   # inspect summary.success_rate
+kaizen-agentic metrics optimize <agent>
+```

docs/integrations/activity-definitions/post-install-metrics-scaffold.md

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+---
+id: kaizen-post-install-metrics-scaffold
+name: Post-Install Metrics Scaffold Validation
+enabled: false
+owner: kaizen-agentic
+governance: custodian
+status: proposed
+trigger:
+  type: event
+  event_type: kaizen.agent.installed
+context_sources:
+  - type: event-payload
+    bind_to: context.install
+---
+
+# Post-Install Metrics Scaffold Validation
+
+Fires when an agent is installed into a project. Verifies that memory and metrics
+scaffolds exist for the installed agent.
+
+```rule
+id: validate-metrics-scaffold
+condition: 'context.install.agent != ""'
+action:
+  task_template: "Validate kaizen scaffold for {{context.install.agent}}"
+  description: |
+    In {{context.install.project_root}} verify:
+    - .kaizen/agents/{{context.install.agent}}/memory.md exists OR run:
+      kaizen-agentic memory init {{context.install.agent}}
+    - .kaizen/metrics/{{context.install.agent}}/ exists OR re-run init without --no-metrics
+  target_repo: "{{context.install.repo}}"
+  priority: low
+  labels: ["kaizen", "metrics", "scaffold", "automated"]
+```
+
+**CLI mapping:**
+
+```bash
+kaizen-agentic memory init <agent>    # scaffolds memory + metrics by default
+kaizen-agentic metrics list           # confirms metrics directory after first record
+```

docs/integrations/activity-definitions/weekly-metrics-optimize.md

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+---
+id: kaizen-weekly-metrics-optimize
+name: Weekly Kaizen Metrics Optimization
+enabled: false
+owner: kaizen-agentic
+governance: custodian
+status: proposed
+trigger:
+  type: cron
+  cron_expression: "0 8 * * 1"
+  timezone: Europe/Berlin
+  misfire_policy: skip
+context_sources:
+  - type: shell
+    query: discover_kaizen_projects
+    params:
+      marker: .kaizen/metrics
+    bind_to: context.projects
+---
+
+# Weekly Kaizen Metrics Optimization
+
+Runs every Monday 08:00 Berlin time on repos that contain `.kaizen/metrics/`.
+Invokes the kaizen-agentic optimizer CLI per project.
+
+```rule
+id: run-weekly-optimizer
+for_each: context.projects
+bind_as: p
+condition: 'p.has_metrics == true'
+action:
+  task_template: "Run kaizen metrics optimize on {{p.repo}}"
+  description: |
+    cd {{p.root}} && kaizen-agentic metrics optimize
+    Optional: kaizen-agentic metrics publish (when artifact-store configured)
+  target_repo: "{{p.repo}}"
+  priority: medium
+  labels: ["kaizen", "metrics", "optimizer", "automated"]
+```
+
+**Activation:** sync this definition into activity-core via `make sync-activity-definitions`
+after enabling the shell resolver for `discover_kaizen_projects`.
+
+**CLI mapping:** `kaizen-agentic metrics optimize` (no agent filter = all agents with metrics).