# M03-RND-M2-MESH-RESOURCE-FINALIZER-001

<!-- OPENWC_CLAIM:M03-RND-M2-MESH-RESOURCE-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-m2-mesh-resource-finalizer`
- Worktree: `C:\Users\sindo\open-wc-worktrees\m03-m2-mesh-resource-finalizer`

## Outcome

Move static M2 ResourceLoader status polling, terminal Resource/Mesh extraction,
runtime Mesh preparation, Mesh-cache adoption and missing outcome from the
loader into one dedicated finalization service.

## Non-goals

- Change static cache path selection or threaded request admission.
- Merge static and animated terminal services behind a generic callback layer.
- Own permits, MultiMesh materialization, prototype Nodes or SceneTree roots.
- Change material refresh version, rebuild rules, cache formats or visible output.

## Paths

- Exclusive: `src/render/m2/m2_mesh_resource_finalizer.gd`,
  `src/tools/verify_m2_mesh_resource_finalizer.gd`,
  `docs/modules/m2-mesh-resource-finalizer.md`, this claim
- Shared: loader, Mesh pipeline/cache/extractor/runtime-finalizer/raw-repository/
  prototype specs and verifiers, world renderer, registry, `RENDER.md`, M03 Evidence

## Contracts and data

- Pending requests are polled in existing Dictionary insertion order.
- Empty Resource paths are discarded and marked missing immediately.
- Only LOADED/FAILED statuses enter completion-order finalize FIFO.
- One permit pops exactly one terminal record, including skipped/cached records.
- Existing cached Mesh suppresses terminal Resource retrieval.
- Loaded Resource uses exact first-Mesh extraction and current refresh-version path.
- Raw M2 data loads only when the extracted Mesh is stale.
- Prepared Mesh is stored by existing replacement semantics; failures mark missing.

## Dependencies

- Requires: accepted Mesh pipeline/cache/extractor/runtime finalizer/raw repository
- Blocks: remaining loader-owned M2 materialization and orchestration cleanup

## Verification

- Synthetic polling/FIFO/skip/load/extract/refresh/store/missing/source/timing
  contracts; adjacent M2/renderer gates; full headless 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: accepted
- Done: implementation, verification and documentation
- Next: next unclaimed M03 renderer extraction package
- Blocked by:

## Handoff

- Commit: `ddeb708` (`render: extract M2 Mesh resource finalizer`)
- Results: finalizer PASS `cases=31 iterations=1000 elapsed_ms=0.767`;
  adjacent Mesh pipeline/cache/extractor/runtime-finalizer/raw-repository/
  prototype/shutdown checks passed; autonomous headless suite `59/59`;
  documentation `46`; coordination passed with `34` historical warnings;
  checkpoint dry-run `7/7`.
- Remaining risks: terminal instantiation/raw parsing/rebuild remain synchronous
  main-thread work behind existing permits; no private-asset visual, leak,
  descriptor-pressure or p95/p99 evidence was added.
- Documentation updated: new full module specification with API/I/O and
  data-flow/state/sequence/dependency diagrams; adjacent M2 module specs,
  world-renderer registry/spec, `RENDER.md` and M03 Evidence.
- Merge: `34b7000` (`merge: M2 Mesh resource finalizer`)
- Post-merge: finalizer PASS `cases=31 iterations=1000 elapsed_ms=0.826`;
  adjacent M2 pipeline/cache/extractor/runtime/repository/prototype/shutdown,
  facade, internal-access `30`, manifest `7/7`, documentation `46` and
  coordination gates passed.
