docs(M03): accept M2 unique placement registry

coordination/claims/M03-RND-M2-UNIQUE-REGISTRY-001.md

@@ -78,11 +78,14 @@ streamer into a scene-free `M2UniquePlacementRegistry`.
 
 ## Status
 
-- State: handoff
+- State: accepted
 - Done: stateful registry, loader adapters, migrated smoke, regressions and docs
-- Next: milestone integrator merge and asset-backed boundary traversal later in M03
+- Next: asset-backed boundary traversal and further M2-service extraction later in M03
 - Blocked by:
 
+<!-- OPENWC_HANDOFF:READY:M03-RND-M2-UNIQUE-REGISTRY-001:acb3a80 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M03-RND-M2-UNIQUE-REGISTRY-001:2342430 -->
+
 ## Handoff
 
 - Commit: `acb3a80` (`refactor(M03): extract M2 unique placement registry`)
@@ -98,3 +101,5 @@ streamer into a scene-free `M2UniquePlacementRegistry`.
 - Documentation updated: `m2-unique-placement-registry.md`, module registry,
   `world-renderer.md`, `RENDER.md`, inline API documentation and data-flow,
   lifecycle and sequence diagrams
+- Integration: accepted in master merge `2342430`; post-merge registry, legacy
+  smoke, internal-access, facade and manifest gates passed