coordination: claim cached M2 animation resource observer

coordination/claims/M03-RND-M2-CACHED-ANIMATION-RESOURCE-OBSERVER-001.md

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+# M03-RND-M2-CACHED-ANIMATION-RESOURCE-OBSERVER-001
+
+<!-- OPENWC_CLAIM:M03-RND-M2-CACHED-ANIMATION-RESOURCE-OBSERVER-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-cached-animation-resource-observer`
+- Worktree: `C:\Users\sindo\open-wc-worktrees\m03-m2-cached-animation-resource-observer`
+
+## Outcome
+
+Move cached-GLB animated M2 lookup, allow/deny and primitive/schema safety
+selection, threaded request admission and static-only transition from the loader
+into a service that produces `M2BuildResourceSnapshot`.
+
+## Non-goals
+
+- Move native GryphonRoost raw-data build, debug logging or finalize drains.
+- Own/free prototype Nodes or change cache/pipeline ownership.
+- Change allow/deny defaults, primitive limits, candidate order or GLB rules.
+- Change batching, permits, cache formats, profiles or visible output.
+
+## Paths
+
+- Exclusive: `src/render/m2/m2_cached_animation_resource_observer.gd`,
+  `src/tools/verify_m2_cached_animation_resource_observer.gd`,
+  `docs/modules/m2-cached-animation-resource-observer.md`, this claim
+- Shared: loader, M2 snapshot/animation pipeline/prototype specs and verifiers,
+  world renderer, module registry, `RENDER.md` and M03 Evidence
+
+## Contracts and data
+
+- Cached animated prototype wins; static-only and pending states do not request.
+- Empty allowlist rejects; denylist wins; matching is stripped/case-insensitive.
+- Historical nested/lowercase/basename `.glb` order remains exact.
+- Candidate requires animations, primitive limit and accepted empty or
+  `pivot_prefix_v1` schema; other schemas are rejected.
+- Successful/`ERR_BUSY` request is remembered and reported pending; no usable
+  candidate or request failure marks animation static.
+- Service produces a snapshot borrowing the exact prototype and frees nothing.
+
+## Dependencies
+
+- Requires: accepted static observer `5ebf4de`, snapshot and animation pipeline
+- Blocks: native animation observation and remaining finalize extraction
+
+## Verification
+
+- Synthetic cache/pipeline/snapshot lifecycle, policy/path/GLB metadata fixtures,
+  source boundaries and timing; 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: active
+- Done: ownership/compatibility contract
+- Next: implementation, verification and documentation
+- Blocked by:
+
+## Handoff
+
+- Commit:
+- Results:
+- Remaining risks:
+- Documentation updated: