render: extract M2 Mesh resource finalizer

targets/03-renderer-facade.md

@@ -62,7 +62,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   `M03-RND-M2-STATIC-BUILD-RESOURCE-OBSERVER-001`,
   `M03-RND-M2-CACHED-ANIMATION-RESOURCE-OBSERVER-001`,
   `M03-RND-M2-NATIVE-ANIMATION-RESOURCE-OBSERVER-001`,
-  `M03-RND-M2-ANIMATION-RESOURCE-FINALIZER-001`
+  `M03-RND-M2-ANIMATION-RESOURCE-FINALIZER-001`,
+  `M03-RND-M2-MESH-RESOURCE-FINALIZER-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
@@ -317,6 +318,13 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   All 58 autonomous headless regressions passed; internal-access remained `30`,
   documentation covered `45` module specifications, coordination retained `34`
   historical expired-claim warnings and checkpoint dry-run kept all `7/7` plans.
+  M2 Mesh resource finalizer passed `cases=31 iterations=1000
+  elapsed_ms=0.767` with insertion-order status polling, loaded/failed FIFO,
+  empty-path discard, cached/null/current/stale Mesh outcomes, exact dependency
+  arguments, raw-read suppression and loader source boundaries. All 59 autonomous
+  headless regressions passed; internal-access remained `30`, documentation
+  covered `46` module specifications, coordination retained `34` historical
+  expired-claim warnings and checkpoint dry-run kept all `7/7` plans.
   M02 terrain-query regression
   remained green (13 pre-existing expired M00 claim warnings).
 - Fidelity comparison: all 16 historical operation limits and drain sites were
@@ -400,14 +408,16 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   M2 stale-cache rebuild selection retains the same positive billboard flag/
   vertex-count tests, referenced non-identity UV rotation, exclusive
   `0.000001` speed threshold, four-stage cap and first-decision-per-path cache
-  lifetime. Raw loading, material refresh version, M2Builder rebuild/fallback and
-  Mesh adoption remain loader-owned.
+  lifetime. Material refresh version and M2Builder rebuild/fallback remain in
+  the runtime finalizer; static raw loading and Mesh adoption now belong to the
+  Mesh resource finalizer.
   Static M2 mesh pending requests preserve normalized-path dedupe and Dictionary
   insertion polling order; loaded/failed transitions preserve completion-order
   finalization FIFO and opaque statuses. All three pending-plus-finalize metrics,
-  both clear sites and shutdown ResourceLoader drain order are unchanged; cache
-  path selection, I/O, permits and adoption decisions remain loader-owned;
-  missing outcomes now belong to the prototype cache state.
+  both clear sites and shutdown ResourceLoader drain order are unchanged. Cache
+  path selection/request admission and permits remain loader-owned; terminal
+  I/O and Mesh/missing adoption belong to the Mesh resource finalizer, with
+  missing outcomes retained by prototype cache state.
   Animated M2 pending requests preserve normalized-path dedupe and Dictionary
   insertion polling order; loaded/failed transitions preserve completion-order
   finalization FIFO and opaque statuses. All three pending-plus-finalize metrics,
@@ -489,6 +499,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   adapters plus synthetic lifecycle and exact-dependency regression fixtures,
   cached M2 animation resource finalizer and loader/pipeline/scene-finalizer/
   prototype-cache adapters plus synthetic terminal-I/O regression fixtures,
+  static M2 Mesh resource finalizer and loader/pipeline/extractor/runtime-finalizer/
+  raw-repository/cache adapters plus synthetic terminal-I/O regression fixtures,
   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
@@ -505,8 +517,9 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   culling-driven spatial-cell grouping; M2 rebuild classification and static
   request/finalize bookkeeping, prepared Mesh cache ownership and first-Mesh
   traversal plus refresh/rebuild/fallback, raw native M2 I/O and prototype/
-  negative cache state are separated, but synchronous native parsing/build and
-  Mesh adoption remain in the loader call path; cached animation eligibility/
+  negative cache state are separated; static Mesh terminal polling/adoption is
+  also separated, but synchronous native parsing/build remains in its
+  main-thread service call path; cached animation eligibility/
   request admission is extracted while terminal ResourceLoader polling remains;
   raw
   animated-instance materialization is now separated but remains synchronous
@@ -518,8 +531,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   batching still needs culling/performance evidence; typed M2 pending state is
   separated and dispatch decisions are explicit; static and cached-animation
   observers produce typed per-operation state, including native observation;
-  animation terminal ResourceLoader drain is extracted, while action execution,
-  material-prototype lookup, root cleanup and static Mesh finalize drain remain loader-owned;
+  animation and static Mesh terminal ResourceLoader drains are extracted, while
+  action execution, material-prototype lookup and root cleanup remain loader-owned;
   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;