render: extract WMO render resource finalizer

docs/modules/world-renderer.md

@@ -165,6 +165,7 @@ from externally reading/writing loader-private queue, task, cache and tile-state
 | `WmoRenderBuildStepPlanner.plan_step` | Internal pure WMO service | Selects one mesh-first lightweight render-group operation and next cursors | Main/any thread; stateless | Raw integer comparisons are preserved without clamping |
 | `WmoRenderBuildQueue` / `WmoRenderBuildJob` | Internal WMO pending-state service | Owns typed root/resource/cursor jobs and FIFO placement keys | Renderer main thread; map session | Invalid enqueue rejected; duplicate/stale behavior preserved |
 | `WmoRenderResourceCacheState` | Internal WMO cache-state service | Owns validated Resources, negative entries and pending cache paths | Renderer main thread; map/cache session | Invalid/occupied request and unknown completion are rejected |
+| `WmoRenderResourceFinalizer` | Internal WMO terminal-I/O service | Polls lightweight render requests, validates script/format and publishes Resource/missing outcomes | Renderer main thread; stateless across calls | Non-terminal retained; failed/null/wrong/stale complete missing |
 | `WmoSceneResourceCacheState` | Internal WMO cache-state service | Owns validated PackedScenes, negative entries and pending `.tscn` paths | Renderer main thread; map/cache session | Direct missing and terminal request transitions remain distinct |
 | `AdtWaterLoadPipelineState` | Internal liquid async-state service | Owns ADT water FIFO/dedupe, active task IDs and mutex result mailbox | Main-thread state; worker result publication | Invalid/duplicate requests rejected; clear does not interrupt workers |
 | `AdtWaterSceneFinalizer.attach_water_scene` | Internal liquid main-thread service | Builds and attaches one existing-format ADT Water subtree | Main thread; stateless, returned Node tile-owned | Empty/invalid/dry input returns null without attachment |
@@ -412,10 +413,12 @@ sequenceDiagram
   and cursor plan. `WmoRenderBuildQueue` owns typed pending jobs, FIFO keys and
   strong root/resource references without freeing engine objects.
   `WmoRenderResourceCacheState` owns validated render Resources, negative entries
-  and pending cache paths. `WmoSceneResourceCacheState` similarly owns validated
-  PackedScenes, negative entries and pending `.tscn` paths. The loader retains
-  ResourceLoader/FileAccess I/O, size and cache-version validation, live fallback,
-  materialization, permits, validity reactions and every Node lifecycle action.
+  and pending cache paths; `WmoRenderResourceFinalizer` owns its terminal
+  ResourceLoader polling and script/format validation. `WmoSceneResourceCacheState`
+  similarly owns validated PackedScenes, negative entries and pending `.tscn`
+  paths. The loader retains request admission, PackedScene/FileAccess I/O, size
+  and scene-cache validation, live fallback, materialization, permits, validity
+  reactions and every Node lifecycle action.
 - `AdtWaterLoadPipelineState` owns pending request order/deduplication, opaque
   active task IDs and the worker-safe parsed-result mailbox. The loader retains
   WorkerThreadPool start/wait, ADTLoader parsing, concurrency/finalize permits,
@@ -613,7 +616,8 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | WMO placement registry | Implemented extraction | Scene-free ownership/lifecycle/source/timing contract | Build/resource state and asset-backed cross-tile corpus pending |
 | WMO render build step planner | Implemented extraction | Scene-free order/cursor/source/timing contract | Asset-backed traversal p95/p99 pending |
 | WMO render build queue | Implemented extraction | Typed lifecycle/order/ownership/source/timing contract | Materialization and asset-backed traversal/leak evidence pending |
-| WMO render Resource cache state | Implemented extraction | Scene-free lifecycle/exclusivity/source/timing plus shutdown contract | ResourceLoader I/O and asset-backed traversal/leak evidence pending |
+| WMO render Resource cache state | Implemented extraction | Scene-free lifecycle/exclusivity/source/timing plus shutdown contract | Asset-backed traversal/leak evidence pending |
+| WMO render Resource finalizer | Implemented extraction | Status/order/script/format/adoption/source/timing contract | Serialized/asset-backed corrupt-cache and leak evidence pending |
 | WMO scene Resource cache state | Implemented extraction | Scene-free lifecycle/direct-missing/source/timing plus shutdown contract | ResourceLoader/live-fallback extraction and asset-backed traversal/leak evidence pending |
 | WMO rendering | Partial | Cached group rendering | Portals/rooms/material parity |
 | ADT water load pipeline state | Implemented extraction | Scene-free FIFO/task/thread/source/timing contract | Parse/finalization and asset-backed traversal/leak evidence pending |
@@ -689,6 +693,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `src/render/m2/m2_raw_model_repository.gd` | Stateless static/animated native M2 file boundary |
 | `src/render/m2/m2_native_animation_resource_observer.gd` | Native candidate/read/build/cache observation |
 | `src/render/m2/m2_prototype_cache_state.gd` | Detached prototype ownership and negative lookup outcomes |
+| `src/render/wmo/wmo_render_resource_finalizer.gd` | Lightweight WMO terminal polling, validation and publication |
 | `src/render/streaming/streaming_target_planner.gd` | Scene-free wanted/retained ADT target calculation |
 | `src/render/streaming/streaming_target_policy.gd` | Immutable renderer radius/prefetch policy |
 | `src/render/streaming/streaming_target_plan.gd` | Immutable planner result with read-only tile-key sets |
@@ -723,6 +728,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `src/tools/verify_m2_raw_model_repository.gd` | M2 invalid/missing/native-boundary/dependency/timing regression |
 | `src/tools/verify_m2_native_animation_resource_observer.gd` | Native candidate/cache/raw/build/adoption/boundary/timing regression |
 | `src/tools/verify_m2_prototype_cache_state.gd` | M2 prototype identity/negative/lifecycle/boundary/timing regression |
+| `src/tools/verify_wmo_render_resource_finalizer.gd` | WMO render status/order/validation/adoption/boundary/timing regression |
 | `src/tools/verify_streaming_target_planner.gd` | Planner behavior, dependency and bounded timing regression |
 | `src/tools/verify_render_budget_scheduler.gd` | Scheduler bounds, shared-lane priority, cancellation and timing regression |
 | `src/tools/verify_renderer_internal_access.gd` | Gameplay/EditorPlugin/registered renderer-tool boundary gate derived from private streamer fields |