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/kontextual-wiki-ingestion-spike.md

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+# kontextual-engine Wiki Ingestion Spike
+
+Design note (WP-0004 Part 4). No runtime dependency.
+
+## Proposed manifest
+
+```yaml
+ingestion:
+  source_repo: kaizen-agentic
+  asset_class: strategic-knowledge
+  paths:
+    - wiki/**/*.md
+    - INTENT.md
+    - docs/adr/ADR-*.md
+  exclude:
+    - wiki/**/xxx
+  metadata:
+    domain: custodian
+    topic_id: cee7bedf-2b48-46ef-8601-006474f2ad7a
+    producer: kaizen-agentic
+  refresh:
+    trigger: git-push-main
+    retention_class: operational-knowledge
+```
+
+## Rationale
+
+- `wiki/` holds product narrative and integration contracts not suited for agent prompts alone
+- ADRs are normative; kontextual-engine can index them for cross-repo retrieval
+- Agent definitions (`agents/`) remain separate — executable personas vs strategic docs
+
+## Open questions
+
+1. Chunking strategy for `KaizenAgentTemplate.md` (section-aware vs whole-file)
+2. Whether Coach synthesis outputs should be ingested as derived assets
+3. Correlation with info-tech-canon profiles when both exist for one agent
+
+## Next step
+
+Dedicated workplan after WP-0004 baseline; evaluate kontextual-engine ingestion API
+stability before hard dependency.