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 -->

targets/03-renderer-facade.md

@@ -27,7 +27,7 @@ Runtime и Editor используют facade; planner/scheduler тестиру
 ## Evidence
 
 - Date: 2026-07-17
-- Revision/worktree: master merges `7ece2ab`, `7e35de7`, `80cb084`, `d6e5b53`, `c69abd6`, `606770c`, `630a0c1`, `f36fabb`, `24aef13`, `2342430`, `396be5e`, `f88bf97`, `3f84717`, `d2cb52f`, `f9e5a4f`, `c06aed5`, `a878e7c`, `60603e1`, `b4955d6`, `ada0fd9`, `f470775`, `874fd0f`, `38f831e`, `83b3618`, `3094561`;
+- Revision/worktree: master merges `7ece2ab`, `7e35de7`, `80cb084`, `d6e5b53`, `c69abd6`, `606770c`, `630a0c1`, `f36fabb`, `24aef13`, `2342430`, `396be5e`, `f88bf97`, `3f84717`, `d2cb52f`, `f9e5a4f`, `c06aed5`, `a878e7c`, `60603e1`, `b4955d6`, `ada0fd9`, `f470775`, `874fd0f`, `38f831e`, `83b3618`, `3094561`, `fa85985`;
   packages `M03-RND-SCHEDULER-001`, `M03-RND-INTERNAL-ACCESS-GATE-001`,
   `M03-RND-FACADE-GROUND-QUERY-001`, `M03-RND-FACADE-ENVIRONMENT-001`,
   `M03-RND-FACADE-ENTITY-001`, `M03-RND-TERRAIN-CACHE-SERVICE-001`,
@@ -46,7 +46,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   `M03-RND-ADT-WATER-SCENE-FINALIZER-001`,
   `M03-RND-M2-RUNTIME-REBUILD-CLASSIFIER-001`,
   `M03-RND-M2-MESH-LOAD-PIPELINE-001`,
-  `M03-RND-M2-MESH-RESOURCE-CACHE-001`
+  `M03-RND-M2-MESH-RESOURCE-CACHE-001`,
+  `M03-RND-M2-MESH-RESOURCE-EXTRACTOR-001`
 - Commands: dedicated scheduler/planner/facade/focus/coordinate/manifest/shutdown
   headless verifiers; Godot cold editor parse; coordination, documentation and diff gates.
 - Results: scheduler `cases=6 iterations=20000 elapsed_ms=10.216`; planner
@@ -151,6 +152,14 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   `7/7` passed. Post-merge cache state (`38.686ms`), pipeline, classifier,
   materials, shutdown, facade, internal-access `34`, `7/7` manifest,
   documentation and coordination gates remained green.
+  M2 mesh resource extractor passed `cases=10 iterations=10000
+  elapsed_ms=39.243` with direct/invalid Resource, depth-first order,
+  null-Mesh sibling continuation, subtree ownership, PackedScene Mesh identity
+  and temporary-root release contracts. Thirty-six renderer/coordinate
+  regressions and checkpoint dry-run `7/7` passed. Post-merge extractor
+  (`38.172ms`), cache, pipeline, classifier, materials, shutdown, facade,
+  internal-access `34`, `7/7` manifest, documentation and coordination gates
+  remained green.
   M02 terrain-query regression
   remained green (13 pre-existing expired M00 claim warnings).
 - Fidelity comparison: all 16 historical operation limits and drain sites were
@@ -223,8 +232,12 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   path selection, I/O, permits, shared missing state and adoption remain loader-owned.
   Prepared static M2 Mesh lookups retain exact Resource identity, same-path
   replacement and map-refresh lifetime; the only clear remains final shutdown
-  after asynchronous drain. Shared missing/prototype/animated caches, extraction,
+  after asynchronous drain. Shared missing/prototype/animated caches,
   refresh/rebuild and materialization remain loader-owned.
+  Direct Mesh Resources, temporary PackedScene instances and prototype/rebuild
+  subtrees retain the same depth-first first-Mesh rule. PackedScene still
+  instantiates once and frees its temporary root synchronously before return;
+  the extractor retains no state or Resource reference.
   No new build-12340 parity claim is made; asset-backed visual/p95/p99 comparison remains pending.
 - Changed files: scene-free scheduler and verifier; streamer budget composition/
   permit delegation; scheduler module spec; world renderer/module registry/RENDER notes;
@@ -252,6 +265,7 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   memoized M2 runtime mesh rebuild classifier and loader query/clear adapters,
   M2 mesh load pipeline state and loader request/poll/finalize/metric/clear adapters,
   prepared M2 Mesh resource cache state and loader lookup/store/shutdown adapters,
+  stateless M2 Mesh resource extractor and three loader traversal adapters,
   expanded facade/internal-access/coordinate verifiers; work-package claims and this evidence.
 - Remaining risks: worker concurrency and stale-result validation remain
   streamer-owned; cancellation stops new permits but does not interrupt
@@ -266,9 +280,9 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   asset-backed visual transform recheck, grouping/build/tasks/caches/finalization
   and boundary traversal p95/p99 remain pending; path grouping is not yet
   culling-driven spatial-cell grouping; M2 rebuild classification and static
-  request/finalize bookkeeping and prepared Mesh cache ownership are separated,
+  request/finalize bookkeeping, prepared Mesh cache ownership and first-Mesh
-  but ResourceLoader I/O, shared missing state, Mesh extraction/preparation and
+  traversal are separated, but ResourceLoader I/O, shared missing state, Mesh
-  finalization remain in the loader; raw
+  preparation and finalization remain in the loader; raw
   WMO ResourceLoader/FileAccess I/O, live fallback and group materialization
   remain in the loader;
   asset-backed WMO placement/portal/material/leak/p95/p99 evidence remains pending;