refactor(M03): extract WMO scene resource cache state

RENDER.md

@@ -32,6 +32,7 @@ Paired run 2026-07-11 подтвердил крупный coordinate/placement g
 - `src/render/wmo/wmo_render_build_step_planner.gd` - mesh-first lightweight WMO group operation and cursor planning without Nodes or Resources.
 - `src/render/wmo/wmo_render_build_queue.gd` / `wmo_render_build_job.gd` - typed pending group jobs, FIFO placement keys and strong root/resource references without engine destruction.
 - `src/render/wmo/wmo_render_resource_cache_state.gd` - validated lightweight WMO render Resources, negative cache and pending cache paths without ResourceLoader I/O.
+- `src/render/wmo/wmo_scene_resource_cache_state.gd` - validated cached-WMO PackedScenes, negative cache and pending `.tscn` paths without file/I/O/Node ownership.
 - `src/scenes/streaming/eastern_kingdoms_streaming.tscn` - текущая сцена для проверки Azeroth/Eastern Kingdoms.
 - `addons/mpq_extractor/loaders/adt_builder.gd` - сборка ADT terrain, control splat материалов и MH2O liquids.
 - `addons/mpq_extractor/loaders/m2_builder.gd` - сборка статического M2 mesh/material.
@@ -1062,6 +1063,20 @@ $exe = Join-Path $env:TEMP 'godot-4.6.1-openwc\Godot_v4.6.1-stable_win64.exe'
 - Asset-backed corrupt-cache, traversal/leak p95/p99 and paired fidelity evidence
   remain pending.
 
+## 2026-07-17 WMO Scene Resource Cache State Extraction
+
+- `WmoSceneResourceCacheState` now owns validated cached-WMO PackedScenes,
+  negative entries and normalized-path to pending-`.tscn` records.
+- `StreamingWorldLoader` still checks file existence and
+  `wmo_max_runtime_scene_mb`, calls `ResourceLoader`, instantiates a validation
+  probe, checks WMOBuilder cache metadata and frees the probe before adoption.
+- Missing files, oversize scenes, request errors, load failures and stale scenes
+  retain their prior negative-cache and live-prototype fallback behavior.
+- Map reset clears pending/negative state while retaining accepted scenes; final
+  shutdown releases all scene state. Formats, profiles and visuals are unchanged.
+- Asset-backed oversize/stale fixtures, traversal/leak p95/p99 and paired fidelity
+  evidence remain pending.
+
 ## 2026-07-16 World Environment Snapshot Facade
 
 - `WorldEnvironmentSnapshot` carries one immutable finite time-of-day value,