docs(M03): accept M2 prototype cache state

coordination/claims/M03-RND-M2-PROTOTYPE-CACHE-001.md

@@ -78,9 +78,9 @@ shutdown-lifetime cache-state service.
 
 ## Status
 
-- State: ready
+- State: accepted
 - Done: cache state, loader/test adapters, lifecycle verifier and required documentation
-- Next: integrate and run post-merge acceptance
+- Next: continue M2 animation request/materialization extraction
 - Blocked by:
 
 ## Handoff
@@ -99,3 +99,13 @@ shutdown-lifetime cache-state service.
   repository/world-renderer specs, module registry and `RENDER.md`.
 
 <!-- OPENWC_HANDOFF:READY:M03-RND-M2-PROTOTYPE-CACHE-001:cd664eb -->
+
+## Integration
+
+- Merge commit: `1de50f9`
+- Post-merge results: prototype cache `cases=16 iterations=100
+  elapsed_ms=37.978`; shutdown, raw repository, finalizer, extractor, Mesh cache,
+  pipeline, materials, facade, internal-access `31`, manifest `7/7`,
+  documentation and coordination gates passed.
+
+<!-- OPENWC_INTEGRATION:ACCEPTED:M03-RND-M2-PROTOTYPE-CACHE-001:1de50f9 -->