docs: mark Helix reciprocal link verified (WP-0005 T16)

Update correlation contract status and close T16 in the adoption-parity
workplan after agentic-resources DESIGN-session-memory.md §11 landed.

docs/integrations/helix-forge-correlation.md

@@ -93,13 +93,8 @@ documenting expected fields — no ingestion code runs in kaizen-agentic.
 | [DESIGN-session-memory.md](https://github.com/coulomb/agentic-resources/blob/main/docs/DESIGN-session-memory.md) | agentic-resources |
 | `session_memory/core/store.py` — `get_digest()` | agentic-resources |
 
-**Reciprocal link status:** agentic-resources should link back to this document from
-its session-memory design notes. As of WP-0005, verify
-`agentic-resources/docs/DESIGN-session-memory.md` (or successor) cites this URL:
-
-`https://gitea.coulomb.social/coulomb/kaizen-agentic/src/branch/main/docs/integrations/helix-forge-correlation.md`
-
-Open a cross-repo issue if the link is missing.
+**Reciprocal link status:** verified (WP-0005 T16). `agentic-resources/docs/DESIGN-session-memory.md`
+§11 cites this document and ADR-004.
 
 ## Non-goals
 

workplans/kaizen-agentic-WP-0005-adoption-parity.md

@@ -108,7 +108,7 @@ Cross-repo follow-through from WP-0004; no foreign code in this repo.
 ### Tasks
 
 - [x] T15 — Document activity-core ActivityDefinition registration steps in `docs/INTEGRATION_PATTERNS.md` (handoff checklist for activity-core owners)
-- [ ] T16 — Verify bidirectional Helix correlation doc link with agentic-resources (kaizen side documented; reciprocal link in agentic-resources still pending)
+- [x] T16 — Verify bidirectional Helix correlation doc link with agentic-resources (reciprocal link added in `DESIGN-session-memory.md` §11)
 
 ### Definition of done