coordination: claim WMO runtime Mesh finalizer

coordination/claims/M03-RND-WMO-RUNTIME-MESH-FINALIZER-001.md

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+# M03-RND-WMO-RUNTIME-MESH-FINALIZER-001
+
+<!-- OPENWC_CLAIM:M03-RND-WMO-RUNTIME-MESH-FINALIZER-001:sindo-main-codex:2026-07-20 -->
+
+## Owner
+
+- Agent ID: `sindo-main-codex`
+- Target: M03 Renderer Facade and Safe Extraction
+- Branch: `work/sindo-main-codex/m03-wmo-runtime-mesh-finalizer`
+- Worktree: `C:\Users\sindo\open-wc-worktrees\m03-wmo-runtime-mesh-finalizer`
+
+## Outcome
+
+Move cached WMO runtime Mesh material refresh versioning, surface iteration and
+material-definition reconstruction from the loader into one service.
+
+## Non-goals
+
+- Change WMO traversal, placement, build-job scheduling or Node materialization.
+- Change WMOBuilder shader/material behavior or cache formats.
+- Change texture path ordering, metadata names or visible output.
+- Generalize M2 and WMO finalization behind a shared abstraction.
+
+## Paths
+
+- Exclusive: `src/render/wmo/wmo_runtime_mesh_finalizer.gd`,
+  `src/tools/verify_wmo_runtime_mesh_finalizer.gd`,
+  `docs/modules/wmo-runtime-mesh-finalizer.md`, this claim
+- Shared: loader, WMO build/cache and world renderer specs/verifiers,
+  `RENDER.md`, M03 Evidence
+
+## Contracts and data
+
+- Null meshes remain null; accepted meshes retain exact Resource identity.
+- Refresh metadata version `10` remains the admission boundary.
+- Only stale `ArrayMesh` surfaces with cached WMO texture metadata are rebuilt.
+- Texture indices remain compact and ordered texture0, texture1, texture2.
+- WMO flags, shader, blend mode and cached colors are forwarded unchanged.
+- Scene traversal, builder material semantics and shutdown order are unchanged.
+
+## Dependencies
+
+- Requires: accepted WMO render and scene Resource finalizers
+- Blocks: remaining loader-owned WMO runtime materialization cleanup
+
+## Verification
+
+- Synthetic identity/version/type/surface/metadata/color/definition/source/timing
+  contracts; adjacent WMO/renderer gates; full suite and checkpoint dry-run.
+
+## Documentation deliverables
+
+- Inline API docs; module API/I/O/ownership; data-flow/state/sequence/dependency
+  diagrams; adjacent renderer docs and M03 Evidence.
+
+## Status
+
+- State: claimed
+- Done: package boundary and contracts
+- Next: implementation, verification and documentation
+- Blocked by:
+
+## Handoff
+
+- Commit:
+- Results:
+- Remaining risks:
+- Documentation updated: