docs(M03): accept M2 mesh resource extractor

Work-Package: M03-RND-M2-MESH-RESOURCE-EXTRACTOR-001
Agent: sindo-main-codex
Tests: post-merge extractor, cache, pipeline, classifier, materials, shutdown, facade, internal-access, manifest, documentation and coordination gates pass
Fidelity: preserves first-Mesh preorder and temporary PackedScene cleanup; asset-backed visual parity remains unclaimed

coordination/claims/M03-RND-M2-MESH-RESOURCE-EXTRACTOR-001.md

@@ -78,9 +78,9 @@ including temporary PackedScene instance cleanup, from `StreamingWorldLoader`.
 
 ## Status
 
-- State: ready
+- State: accepted
 - Done: extractor, three loader/test adapters, contract verifier and required documentation
-- Next: integrator merge and post-merge smoke
+- Next: isolated M2 Mesh material preparation finalizer extraction
 - Blocked by:
 
 ## Handoff
@@ -98,3 +98,12 @@ including temporary PackedScene instance cleanup, from `StreamingWorldLoader`.
   module registry, `world-renderer.md` and `RENDER.md`.
 
 <!-- OPENWC_HANDOFF:READY:M03-RND-M2-MESH-RESOURCE-EXTRACTOR-001:7b0e1ea -->
+
+## Integration
+
+- Merge commit: `fa85985`
+- Post-merge results: extractor `cases=10 iterations=10000
+  elapsed_ms=38.172`; cache, pipeline, classifier, materials, shutdown, facade,
+  internal-access `34`, manifest `7/7`, documentation and coordination gates passed.
+
+<!-- OPENWC_INTEGRATION:ACCEPTED:M03-RND-M2-MESH-RESOURCE-EXTRACTOR-001:fa85985 -->