render: extract WMO scene resource finalizer

docs/modules/world-renderer.md

@@ -167,6 +167,7 @@ from externally reading/writing loader-private queue, task, cache and tile-state
 | `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 |
+| `WmoSceneResourceFinalizer` | Internal WMO terminal-I/O service | Polls cached scene requests, validates/frees probes and publishes scene/missing outcomes | Renderer main thread; stateless across calls | Failed/wrong/stale scenes complete missing; probes always released |
 | `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 |
 
@@ -416,9 +417,10 @@ sequenceDiagram
   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.
+  paths; `WmoSceneResourceFinalizer` owns terminal ResourceLoader I/O and
+  validation-probe lifetime. The loader retains request admission, FileAccess
+  size checks, live fallback, materialization, permits, validity reactions and
+  every placed-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,
@@ -618,7 +620,8 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | 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 | 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 scene Resource cache state | Implemented extraction | Scene-free lifecycle/direct-missing/source/timing plus shutdown contract | Asset-backed traversal/leak evidence pending |
+| WMO scene Resource finalizer | Implemented extraction | Status/order/type/probe/lifetime/adoption/source/timing contract | Serialized stale/oversize and asset-backed 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 |
 | Liquids | Partial | MH2O/MLIQ paths | LiquidType/depth/shore fidelity |
@@ -694,6 +697,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `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/wmo/wmo_scene_resource_finalizer.gd` | Cached WMO terminal polling, probe validation/lifetime 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 |
@@ -729,6 +733,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `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_wmo_scene_resource_finalizer.gd` | WMO scene status/order/probe/lifetime/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 |