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+# M03-RND-M2-ANIMATED-SCENE-FINALIZER-001
+
+<!-- OPENWC_CLAIM:M03-RND-M2-ANIMATED-SCENE-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-animated-scene-finalizer`
+- Worktree: `C:\Users\sindo\open-wc-worktrees\m03-m2-animated-scene-finalizer`
+
+## Outcome
+
+Extract animated M2 PackedScene candidate instantiation, material override repair
+and AnimationPlayer validation from `StreamingWorldLoader` into an explicit
+main-thread finalizer.
+
+## Non-goals
+
+- Call ResourceLoader or interpret threaded-load statuses.
+- Choose animation eligibility, cache paths, material prototypes or permits.
+- Adopt/cache prototype Nodes or change static/native animation paths.
+- Change visible materials, animation selection, cache formats or profiles.
+
+## Paths
+
+- Exclusive: `src/render/m2/m2_animated_scene_finalizer.gd`,
+  `src/tools/verify_m2_animated_scene_finalizer.gd`,
+  `docs/modules/m2-animated-scene-finalizer.md`, this claim
+- Shared/hotspots: `src/scenes/streaming/streaming_world_loader.gd`, M2
+  animation pipeline/prototype/material/build/shutdown/facade/internal-access/
+  manifest verifiers and module specs, `docs/modules/world-renderer.md`,
+  `docs/modules/README.md`, `RENDER.md`, `targets/03-renderer-facade.md`
+- Generated/ignored: `.godot`, native DLL, generated M2 resources, caches and
+  proprietary renderer corpus
+
+## Contracts and data
+
+- Only a PackedScene whose instantiated root is Node3D becomes a candidate;
+  unsupported or invalid roots return null and any created invalid root is freed.
+- Material repair preserves depth-first MeshInstance3D order, source-index
+  clamping, per-surface override priority and first-material fallback.
+- Finalization accepts a candidate only when at least one descendant
+  AnimationPlayer exists; rejected detached candidates are freed synchronously.
+- Accepted result transfers the exact Node3D and player count to the loader.
+- Loader retains ResourceLoader, material-prototype acquisition, permit,
+  prototype adoption/static fallback and diagnostic-log decisions.
+
+## Dependencies
+
+- Requires: accepted animation load pipeline package on master `c20bc62`
+- Blocks: further animated M2 build/materialization decomposition
+- External state: imported GLB/PackedScene shape remains engine-owned input
+
+## Verification
+
+- Commands: dedicated invalid/ownership/traversal/material/finalization/source/
+  timing verifier; animation pipeline/prototype/shutdown/material/M2 build/facade/
+  internal-access/manifest and adjacent M2 regressions; docs/coordination/dry-run gates
+- Fixtures: synthetic PackedScenes, nested AnimationPlayers and ArrayMesh materials
+- Fidelity evidence: exact material mapping and accepted/rejected Node transitions
+- Performance budget: 10,000 depth-first candidate queries under 1 second
+
+## Documentation deliverables
+
+- Inline public API docs
+- Module specification with inputs/outputs, ownership and source map
+- Data-flow, lifecycle/state, sequence and dependency diagrams
+- Adjacent animation/prototype/world-renderer/module-registry/RENDER updates
+
+## Simplicity and naming
+
+- Important name introduced: `M2AnimatedSceneFinalizer`
+- Simplest solution: one stateless main-thread RefCounted over engine scene types
+- Rejected complexity: callbacks, generic scene pipeline, signals or cache ownership
+- Unavoidable complexity: material repair occurs between candidate creation and acceptance
+- Measured optimization evidence: bounded synthetic subtree traversal
+
+## Status
+
+- State: claimed
+- Done: candidate/material/player ownership boundary audited on current master
+- Next: implement finalizer, migrate adapters, verify and document
+- Blocked by:
+
+## Handoff
+
+- Commit:
+- Results:
+- Remaining risks:
+- Documentation updated: