Merge pull request 'test(M00): close renderer baseline milestone' (#16) from work/sindo-main-codex/m00-integrator-closeout into master

Reviewed-on: #16

RENDER.md

@@ -822,6 +822,14 @@ $exe = Join-Path $env:TEMP 'godot-4.6.1-openwc\Godot_v4.6.1-stable_win64.exe'
 - Added `src/tools/capture_render_checkpoints.gd` to load the Eastern Kingdoms streaming scene, move a dedicated camera to fixed regression viewpoints and save PNGs under `user://render_checkpoints`.
 - Current checkpoints cover the Elwynn waterfall from front/side and Goldshire Inn/Blacksmith windows. Headless runs are dry-run only because the headless display server cannot produce viewport PNGs.
 
+## 2026-07-13 Renderer Shutdown Ownership
+
+- `StreamingWorldLoader` drains its asynchronous work before teardown, leaves parented streamed nodes to SceneTree ownership, then explicitly frees detached M2/WMO prototype nodes and clears resource caches.
+- `ADTBuilder` explicitly frees a temporary `Water` root when an ADT liquid payload produces no child geometry. Dry tiles must not leave empty nodes in ObjectDB.
+- `src/tools/verify_render_runtime_cache_shutdown.gd` regression-checks detached prototype and resource-cache release plus empty-liquid-root ownership. The unified render-baseline runner executes it before capture.
+- A focused 8-second GUI checkpoint and a seven-checkpoint single-pass GUI run finish without Node, renderer resource or RID leak diagnostics. A timing-dependent anonymous zero-reference `RefCounted` ObjectDB warning can remain at engine teardown; it is tracked separately and is not suppressed.
+- This is shutdown-only ownership behavior and does not alter checkpoint rendering, cache formats or the `Blizzlike335` compatibility profile.
+
 ## Practical Rule For Future Work
 
 If something improves quality but creates visible hitch, it is not done. Move it to bake/cache/background work, split finalization over frames, or prewarm it before the player can see it.

addons/mpq_extractor/loaders/adt_builder.gd

@@ -788,7 +788,10 @@ static func _build_tile_water_root(data: Dictionary, origin_offset: Vector3) ->
 		mi.cast_shadow = GeometryInstance3D.SHADOW_CASTING_SETTING_OFF
 		root.add_child(mi)
 
-	return root if root.get_child_count() > 0 else null
+	if root.get_child_count() > 0:
+		return root
+	root.free()
+	return null
 
 
 static func _append_liquid_geometry(

coordination/claims/M00-QAR-ANIMATION-SKY-EVIDENCE-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-ANIMATION-SKY-EVIDENCE-001 — Animation and sky evidence
 
 <!-- OPENWC_CLAIM:M00-QAR-ANIMATION-SKY-EVIDENCE-001:sindo-main-codex:2026-07-15 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-ANIMATION-SKY-EVIDENCE-001:d1df794 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-CAMERA-FRAMING-REFINEMENT-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-CAMERA-FRAMING-REFINEMENT-001 — Goldshire pitch/FOV refinement
 
 <!-- OPENWC_CLAIM:M00-QAR-CAMERA-FRAMING-REFINEMENT-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-CAMERA-FRAMING-REFINEMENT-001:3172f41 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-CAMERA-OCCLUDERS-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-CAMERA-OCCLUDERS-001 — Camera occluder diagnostic
 
 <!-- OPENWC_CLAIM:M00-QAR-CAMERA-OCCLUDERS-001:sindo-main-codex:2026-07-13 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-CAMERA-OCCLUDERS-001:9d34a47 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-CAMERA-POSE-EVIDENCE-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-CAMERA-POSE-EVIDENCE-001 — Goldshire camera pose evidence
 
 <!-- OPENWC_CLAIM:M00-QAR-CAMERA-POSE-EVIDENCE-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-CAMERA-POSE-EVIDENCE-001:eca76c5 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-CAMERA-POSE-SWEEP-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-CAMERA-POSE-SWEEP-001 — Empirical camera pose sweep
 
 <!-- OPENWC_CLAIM:M00-QAR-CAMERA-POSE-SWEEP-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-CAMERA-POSE-SWEEP-001:657a1d8 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-CAPTURE-SHUTDOWN-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-CAPTURE-SHUTDOWN-001 — Capture shutdown drain
 
 <!-- OPENWC_CLAIM:M00-QAR-CAPTURE-SHUTDOWN-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-CAPTURE-SHUTDOWN-001:8d4641a -->
 
 ## Ownership
 

coordination/claims/M00-QAR-COORD-CALIBRATION-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-COORD-CALIBRATION-001 — Renderer coordinate calibration
 
 <!-- OPENWC_CLAIM:M00-QAR-COORD-CALIBRATION-001:sindo-main-codex:2026-07-13 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-COORD-CALIBRATION-001:dfc1031 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-FINAL-PAIRED-EVIDENCE-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-FINAL-PAIRED-EVIDENCE-001 — Final paired evidence audit
 
 <!-- OPENWC_CLAIM:M00-QAR-FINAL-PAIRED-EVIDENCE-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-FINAL-PAIRED-EVIDENCE-001:239cb24 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-FOV-SWEEP-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-FOV-SWEEP-001 — Empirical camera FOV sweep
 
 <!-- OPENWC_CLAIM:M00-QAR-FOV-SWEEP-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-FOV-SWEEP-001:f548507 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-GUI-RID-SHUTDOWN-001.md

@@ -0,0 +1,79 @@
+# M00-QAR-GUI-RID-SHUTDOWN-001 — GUI capture RID shutdown
+
+<!-- OPENWC_CLAIM:M00-QAR-GUI-RID-SHUTDOWN-001:sindo-main-codex:2026-07-15 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-GUI-RID-SHUTDOWN-001:f19c0c4 -->
+
+## Ownership
+
+- Target: M00
+- Program: QAR
+- Owner/Agent ID: sindo-main-codex
+- Branch: `work/sindo-main-codex/m00-gui-rid-shutdown`
+- Lease expires UTC: 2026-07-15
+- Integrator: milestone integrator
+
+## Outcome
+
+Identify ownership of GUI render-baseline shutdown leaks and apply the smallest regression-covered fix that lets queued world resources release before engine teardown.
+
+## Non-goals
+
+- Renderer architecture decomposition.
+- Hiding or filtering Godot leak diagnostics.
+- Changing M00 status, Evidence or `OPENWC_TARGET_DONE`.
+
+## Paths
+
+- Exclusive: capture shutdown sequencing and its regression diagnostic
+- Shared/hotspots: `src/tools/capture_render_checkpoints.gd`, renderer module shutdown documentation
+- Generated/ignored: GUI capture output and verbose logs under `user://`
+
+## Contracts and data
+
+- Public API/events: unchanged
+- Schema/format version: unchanged
+- Migration/compatibility: capture images and report schema remain unchanged
+- Consumers: M00 baseline runner and milestone integrator
+
+## Dependencies
+
+- Requires: merged seven-reference evidence audit
+- Blocks: integrator disposition of the final GUI renderer leak risk
+- External state: proprietary references are not required for the focused shutdown regression
+
+## Verification
+
+- Commands: focused GUI single-checkpoint capture with verbose shutdown, headless project load, manifest/self-tests, repository gates
+- Fixtures: existing non-proprietary render-baseline manifest and local extracted corpus
+- Fidelity evidence: no visual behavior change; focused PNG hash/report remains valid
+- Performance budget: shutdown-only change
+
+## Documentation deliverables
+
+- Inline public API docs: shutdown method semantics if introduced
+- Module specification: shutdown ownership and observed leak status
+- Data-flow diagram: unchanged
+- Sequence/state/dependency diagrams: update shutdown sequence only if behavior changes
+- Source map/status updates: capture tool if changed
+
+## Simplicity and naming
+
+- Important names introduced: `_release_runtime_caches_for_shutdown`, `_free_detached_node_cache`, `_queue_free_streamed_node`
+- Simplest considered solution: explicitly release capture-owned scene references and drain deferred deletion
+- Rejected complexity/abstractions: global RID registry or suppressed engine diagnostics
+- Unavoidable complexity and justification: async streaming jobs must finish before resource ownership can drain
+- Measured optimization evidence: not applicable
+
+## Status
+
+- State: ready-for-review
+- Done: reproduced the focused leak; assigned detached prototype/resource caches and empty liquid roots to explicit owners; added a headless regression; verified zero Node/resource/RID leak lines in focused and seven-checkpoint GUI captures
+- Next: integrator review and disposition of the residual engine-level zero-reference `RefCounted` diagnostic
+- Blocked by:
+
+## Handoff
+
+- Commit: this work-package commit
+- Results: before the fix the focused capture retained 6 mesh, 6 material, 4 shader, 6 texture, 6 instance and RenderingDevice RIDs (30 resources); after the fix focused and seven-checkpoint captures retained none
+- Remaining risks: D3D12 descriptor fallback remains unrelated; Godot can report a timing-dependent anonymous `RefCounted` whose reference count is already zero, without retained Node/resource/RID ownership
+- Documentation updated: `RENDER.md`, `docs/modules/world-renderer.md`, `docs/M00_FINAL_PAIRED_EVIDENCE.md`; existing renderer shutdown sequence updated, no new diagram required

coordination/claims/M00-QAR-INTEGRATOR-CLOSEOUT-001.md

@@ -0,0 +1,79 @@
+# M00-QAR-INTEGRATOR-CLOSEOUT-001 — M00 milestone closeout
+
+<!-- OPENWC_CLAIM:M00-QAR-INTEGRATOR-CLOSEOUT-001:sindo-main-codex:2026-07-15 -->
+<!-- OPENWC_HANDOFF:READY:M00-QAR-INTEGRATOR-CLOSEOUT-001:ba81098 -->
+
+## Ownership
+
+- Target: M00
+- Program: QAR
+- Owner/Agent ID: sindo-main-codex
+- Branch: `work/sindo-main-codex/m00-integrator-closeout`
+- Lease expires UTC: 2026-07-15
+- Integrator: sindo-main-codex, assigned by the user on 2026-07-13
+
+## Outcome
+
+Audit merged M00 work packages, refresh final Evidence, close the milestone and activate M01.
+
+## Non-goals
+
+- Change renderer behavior or compatibility claims.
+- Start M01 implementation.
+- Commit proprietary references or generated capture output.
+
+## Paths
+
+- Exclusive: M00/M01 target status and final M00 Evidence
+- Shared/hotspots: `targets/README.md`, `targets/DEVELOPMENT_ROADMAP.md`, completed M00 claims
+- Generated/ignored: `user://` post-merge reports
+
+## Contracts and data
+
+- Public API/events: unchanged
+- Schema/format version: unchanged
+- Migration/compatibility: none
+- Consumers: milestone integrator and M01 work packages
+
+## Dependencies
+
+- Requires: merged M00 PRs #1 through #15 and final paired evidence
+- Blocks: M01 activation
+- External state: private reference images remain outside Git; their hashes and metrics are already recorded
+
+## Verification
+
+- Commands: post-merge render baseline dry-run, coordination gate, documentation gate
+- Fixtures: seven-checkpoint non-proprietary manifest and recorded private-reference hashes/metrics
+- Fidelity evidence: closeout preserves the explicit non-parity classification in `docs/M00_FINAL_PAIRED_EVIDENCE.md`
+- Performance budget: no runtime change
+
+## Documentation deliverables
+
+- Inline public API docs: unchanged
+- Module specification: unchanged
+- Data-flow diagram: unchanged
+- Sequence/state/dependency diagrams: unchanged
+- Source map/status updates: target index, roadmap current state and M00 Evidence
+
+## Simplicity and naming
+
+- Important names introduced: none
+- Simplest considered solution: status and Evidence-only integrator patch
+- Rejected complexity/abstractions: new closeout tooling for a one-time milestone transition
+- Unavoidable complexity and justification: none
+- Measured optimization evidence: not applicable
+
+## Status
+
+- State: ready-for-review
+- Done: verified all M00 PRs and merge commits, refreshed final Evidence, closed M00, activated M01 and passed transition gates
+- Next: review and merge the closeout PR before starting an M01 implementation claim
+- Blocked by:
+
+## Handoff
+
+- Commit: `ba81098`
+- Results: exactly one ACTIVE target (M01); M00 DONE marker accepted; post-merge baseline, comparator self-test, coordination and documentation gates passed
+- Remaining risks: documented renderer fidelity gaps and D3D12 fallback continue beyond M00
+- Documentation updated: target status/index, development-roadmap current state and final M00 Evidence

coordination/claims/M00-QAR-LANDMARK-REGION-DIFF-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-LANDMARK-REGION-DIFF-001 — Landmark-region visual diff
 
 <!-- OPENWC_CLAIM:M00-QAR-LANDMARK-REGION-DIFF-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-LANDMARK-REGION-DIFF-001:3d90c6d -->
 
 ## Ownership
 

coordination/claims/M00-QAR-TERRAIN-HEIGHT-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-TERRAIN-HEIGHT-001 — Terrain height diagnostic
 
 <!-- OPENWC_CLAIM:M00-QAR-TERRAIN-HEIGHT-001:sindo-main-codex:2026-07-13 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-TERRAIN-HEIGHT-001:f8538ba -->
 
 ## Ownership
 

coordination/claims/M00-QAR-TILE-OWNERSHIP-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-TILE-OWNERSHIP-001 — Waterfall terrain tile ownership
 
 <!-- OPENWC_CLAIM:M00-QAR-TILE-OWNERSHIP-001:sindo-main-codex:2026-07-13 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-TILE-OWNERSHIP-001:2306200 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-VISUAL-DIFF-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-VISUAL-DIFF-001 — Renderer checkpoint visual diff
 
 <!-- OPENWC_CLAIM:M00-QAR-VISUAL-DIFF-001:sindo-main-codex:2026-07-13 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-VISUAL-DIFF-001:19df5b7 -->
 
 ## Ownership
 

coordination/claims/M00-QAR-WMO-READINESS-001.md

@@ -1,6 +1,7 @@
 # M00-QAR-WMO-READINESS-001 — Goldshire WMO readiness
 
 <!-- OPENWC_CLAIM:M00-QAR-WMO-READINESS-001:sindo-main-codex:2026-07-14 -->
+<!-- OPENWC_INTEGRATION:ACCEPTED:M00-QAR-WMO-READINESS-001:5092995 -->
 
 ## Ownership
 

docs/M00_FINAL_PAIRED_EVIDENCE.md

@@ -62,7 +62,9 @@ The reports demonstrate current differences and do not claim `1:1`. Camera calib
 
 ## Operational risks
 
-The full GUI visual capture completed and wrote its report, but Godot still emitted renderer RID/resource leak diagnostics at exit, including leaked material, shader, texture, instance and rendering-device RIDs. The earlier anonymous headless `RefCounted` leak is fixed; these GUI renderer allocations are a distinct known risk. They do not invalidate the written images or metrics, but must remain recorded rather than hidden.
+A follow-up shutdown ownership fix removed the GUI renderer leaks found by the final visual capture. Before the fix, the focused animated-M2 checkpoint retained 6 mesh, 6 material, 4 shader, 6 texture, 6 instance and associated RenderingDevice RIDs, for 30 resources in use. After the fix, both the focused 8-second capture and a seven-checkpoint single-pass capture completed without Node, resource or RID leak diagnostics.
+
+Godot can still emit a timing-dependent ObjectDB warning for one or more anonymous `RefCounted` objects whose reported reference count is already zero. The warning has no retained Node, renderer resource or RID ownership in the verified captures. It remains recorded as an engine-teardown diagnostic rather than being hidden, but it is distinct from the resolved GUI renderer leak.
 
 ## Integrator decision checklist
 
@@ -70,5 +72,5 @@ The full GUI visual capture completed and wrote its report, but Godot still emit
 - Animated M2: build-12340 native motion observed in two phases; synthetic/real placement mismatch explicitly classified.
 - Sky transition: build-12340 19:00 evidence present with approximate paired camera and human-approved composition.
 - Renderer visual differences: registered as gaps, not parity claims.
-- GUI renderer RID/resource diagnostics: accepted as a tracked risk or assigned a follow-up blocker.
+- GUI renderer RID/resource diagnostics: resolved by explicit shutdown ownership and covered by a headless regression verifier; the residual zero-reference `RefCounted` engine-teardown warning remains tracked separately.
 - Target status, target Evidence and `OPENWC_TARGET_DONE` marker: integrator-only actions.

docs/modules/world-renderer.md

@@ -143,7 +143,8 @@ sequenceDiagram
     Stream->>Render: evict outside retention range
     Stream->>Worker: shutdown: wait for WorkerThreadPool tasks
     Stream->>Stream: shutdown: finish registered ResourceLoader requests
-    Stream->>Render: clear queues, nodes, caches and RIDs
+    Stream->>Render: clear queues and owned tree nodes/RIDs
+    Stream->>Stream: free detached prototypes and release resource caches
 ```
 
 ## Ownership, threading and resources
@@ -153,6 +154,8 @@ sequenceDiagram
 - Parsed/grouped results передаются обратно через guarded result queues.
 - Mesh/material/node/RID finalization выполняется main thread и ограничивается exported budgets.
 - Shutdown/map switch обязан дождаться WorkerThreadPool jobs и зарегистрированных threaded ResourceLoader requests до очистки очередей, nodes, caches и RIDs.
+- Parented streamed nodes остаются owned by SceneTree during shutdown; detached M2/WMO prototype caches are explicitly `free()`d after asynchronous work drains.
+- A temporary liquid root with no generated child geometry is explicitly freed by `ADTBuilder` instead of being returned or abandoned.
 - Cache resources считаются immutable после публикации.
 
 ## Errors, cancellation and recovery
@@ -165,7 +168,7 @@ sequenceDiagram
 | Main-thread hitch | Named section timing | Frame spike, work remains queued | `HITCH` log | Lower budget/fix finalize path |
 | D3D12 descriptor exhaustion | Rendering backend error | Render failure/fallback backend | Godot error + baseline report | Dedup resources/fix settings |
 | Teleport/map change | Focus/session transition | Old jobs become stale | Target/session generation | Cancel/drop stale results |
-| Shutdown leak | Godot leak/RID diagnostics | Resource retained | Verbose shutdown report | Drain owned worker and resource requests before clearing registries |
+| Shutdown leak | Godot leak/RID diagnostics | Resource retained | Verbose shutdown report + cache shutdown verifier | Drain requests, preserve tree ownership, then free detached prototypes and clear resource caches |
 
 ## Configuration and capabilities
 
@@ -235,7 +238,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 - Joint Goldshire pitch/FOV refinement had no human-approved optimum: full-frame error preferred grass-heavy FOV 62/pitch -25, while FOV 38/pitch -10 better matched building scale. Landmark/region scoring is required before calibration.
 - Common-region scoring `[300,100,1400,650]` moved Goldshire's numeric optimum to FOV 38/yaw 10/pitch -15, but human inspection still found an oversized/cropped facade; semantic landmarks or masks remain required.
 - Final paired audit compared fourteen cold/warm images for seven private build 12340 references with zero missing pairs; mean error ranges `0.066893..0.176955`. Animated-M2 native motion is observed across two original-client phases, but its real Lakeshire placement differs from the synthetic Goldshire probe. Sky-transition evidence uses the checkpoint map position/time with manually approved approximate framing.
-- D3D12 descriptor issues remain; the capture-path anonymous `RefCounted` shutdown leak is regression-covered by a clean verbose dry-run, while other RID/resource diagnostics still require independent evidence.
+- D3D12 descriptor issues remain. Explicit shutdown ownership removes the GUI capture's Node/resource/RID leaks in focused and seven-checkpoint runs; a timing-dependent ObjectDB warning for anonymous zero-reference `RefCounted` objects remains as a separate engine-teardown diagnostic.
 - M2/WMO/material/particle/ribbon/portal parity incomplete.
 - Public API is mostly exported configuration rather than stable contracts.
 
@@ -253,6 +256,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `src/tools/build_*cache.gd`, `src/tools/bake_*cache.gd` | Offline cache generation |
 | `tools/run_render_baseline.ps1` | Unified M00 baseline runner |
 | `src/tools/compare_render_checkpoints.gd` | Offline JPG/PNG paired-image perceptual metrics and JSON pass/fail report |
+| `src/tools/verify_render_runtime_cache_shutdown.gd` | Headless ownership regression for detached runtime prototypes, resource caches and empty liquid roots |
 | `src/tools/capture_render_checkpoints.gd` | Deterministic no-roll checkpoint camera, performance and visual capture |
 | `tools/sweep_render_checkpoint_camera_pose.ps1` | Offline yaw/pitch capture grid and paired-error ranking |
 | `src/tools/verify_render_coordinate_calibration.gd` | Build 12340 camera-coordinate golden point round-trip diagnostic |

src/scenes/streaming/streaming_world_loader.gd

@@ -374,6 +374,39 @@ func _exit_tree() -> void:
 	_shutting_down = true
 	_wait_for_tile_tasks()
 	_clear_streamed_world()
+	_release_runtime_caches_for_shutdown()
+
+
+## Frees detached prototype nodes and releases render resources owned by this
+## loader after all asynchronous work has completed. Map refreshes retain these
+## caches; only scene shutdown destroys them.
+func _release_runtime_caches_for_shutdown() -> void:
+	_free_detached_node_cache(_m2_scene_cache)
+	_free_detached_node_cache(_m2_animated_scene_cache)
+	_free_detached_node_cache(_wmo_prototype_cache)
+	_m2_mesh_cache.clear()
+	_m2_static_animation_cache.clear()
+	_m2_missing_cache.clear()
+	_wmo_render_cache.clear()
+	_wmo_scene_resource_cache.clear()
+	_wmo_render_missing_cache.clear()
+	_wmo_scene_cache_missing.clear()
+	_wmo_missing_cache.clear()
+	_shared_tex_cache.clear()
+
+
+func _free_detached_node_cache(node_cache: Dictionary) -> void:
+	for cached_value in node_cache.values():
+		if not (cached_value is Node):
+			continue
+		var cached_node := cached_value as Node
+		if not is_instance_valid(cached_node):
+			continue
+		if cached_node.is_inside_tree():
+			cached_node.queue_free()
+		else:
+			cached_node.free()
+	node_cache.clear()
 
 
 func _apply_quality_preset() -> void:
@@ -2781,17 +2814,29 @@ func _clear_streamed_world() -> void:
 				_free_render_instance(chunk_rid)
 		var tile_root: Node = state.get("root", null)
 		if tile_root:
-			tile_root.queue_free()
+			_queue_free_streamed_node(tile_root)
 
 	_tile_states.clear()
 	_clear_tile_mesh_cache()
 	_clear_quality_terrain_mesh_cache()
 	_clear_wmo_registry()
+	if not _shutting_down:
 		_ensure_world_wmo_root()
 		if enable_wmo:
 			_place_global_wmo()
 
 
+## During world shutdown, parented nodes are recursively owned by the world
+## root. Queueing them separately from `_exit_tree()` can detach them from that
+## deletion and leave empty Node objects alive at engine teardown.
+func _queue_free_streamed_node(node: Node) -> void:
+	if node == null or not is_instance_valid(node):
+		return
+	if _shutting_down and node.is_inside_tree():
+		return
+	node.queue_free()
+
+
 func _reset_terrain_root_children() -> void:
 	if _terrain_root == null:
 		return
@@ -3889,10 +3934,10 @@ func _clear_wmo_registry() -> void:
 		var entry: Dictionary = entry_variant
 		var node: Node = entry.get("node", null)
 		if node and is_instance_valid(node):
-			node.queue_free()
+			_queue_free_streamed_node(node)
 	_wmo_registry.clear()
 	if _world_wmo_root and is_instance_valid(_world_wmo_root):
-		_world_wmo_root.queue_free()
+		_queue_free_streamed_node(_world_wmo_root)
 	_world_wmo_root = null
 
 
@@ -4458,7 +4503,7 @@ func _cancel_m2_build_job(key: String) -> void:
 	var job: Dictionary = _m2_build_jobs[key]
 	var root: Node = job.get("root", null)
 	if root != null and is_instance_valid(root):
-		root.queue_free()
+		_queue_free_streamed_node(root)
 	_m2_build_jobs.erase(key)
 
 

src/tools/verify_render_runtime_cache_shutdown.gd

@@ -0,0 +1,77 @@
+extends SceneTree
+
+const STREAMING_WORLD_LOADER := preload("res://src/scenes/streaming/streaming_world_loader.gd")
+const ADT_BUILDER := preload("res://addons/mpq_extractor/loaders/adt_builder.gd")
+
+var _failures := 0
+
+
+func _initialize() -> void:
+	_verify_empty_water_root_ownership()
+	_verify_runtime_cache_ownership()
+
+	if _failures > 0:
+		push_error("Render runtime cache shutdown verification failed: %d issue(s)" % _failures)
+		quit(1)
+		return
+	print("Render runtime cache shutdown verification passed.")
+	quit(0)
+
+
+func _verify_empty_water_root_ownership() -> void:
+	var node_count_before := int(Performance.get_monitor(Performance.OBJECT_NODE_COUNT))
+	var empty_water_root: Node3D = ADT_BUILDER.build_tile_water_scene({"chunks": []}, Vector3.ZERO)
+	var node_count_after := int(Performance.get_monitor(Performance.OBJECT_NODE_COUNT))
+	_expect(empty_water_root == null, "empty ADT liquid payload should not produce a water root")
+	_expect(node_count_after == node_count_before, "empty ADT liquid payload should release its temporary water root")
+
+
+func _verify_runtime_cache_ownership() -> void:
+	var loader: Node = STREAMING_WORLD_LOADER.new()
+	var static_m2_prototype := Node3D.new()
+	var animated_m2_prototype := Node3D.new()
+	var wmo_prototype := Node3D.new()
+
+	loader.set("_m2_scene_cache", {"static": static_m2_prototype})
+	loader.set("_m2_animated_scene_cache", {"animated": animated_m2_prototype})
+	loader.set("_wmo_prototype_cache", {"wmo": wmo_prototype})
+	loader.set("_m2_mesh_cache", {"mesh": ArrayMesh.new()})
+	loader.set("_m2_static_animation_cache", {"static": true})
+	loader.set("_m2_missing_cache", {"missing": true})
+	loader.set("_wmo_render_cache", {"render": Resource.new()})
+	loader.set("_wmo_scene_resource_cache", {"scene": PackedScene.new()})
+	loader.set("_wmo_render_missing_cache", {"missing": true})
+	loader.set("_wmo_scene_cache_missing", {"missing": true})
+	loader.set("_wmo_missing_cache", {"missing": true})
+	loader.set("_shared_tex_cache", {"texture": ImageTexture.new()})
+
+	loader.call("_release_runtime_caches_for_shutdown")
+
+	_expect(not is_instance_valid(static_m2_prototype), "static M2 prototype should be freed")
+	_expect(not is_instance_valid(animated_m2_prototype), "animated M2 prototype should be freed")
+	_expect(not is_instance_valid(wmo_prototype), "WMO prototype should be freed")
+	for cache_name in [
+		"_m2_scene_cache",
+		"_m2_animated_scene_cache",
+		"_wmo_prototype_cache",
+		"_m2_mesh_cache",
+		"_m2_static_animation_cache",
+		"_m2_missing_cache",
+		"_wmo_render_cache",
+		"_wmo_scene_resource_cache",
+		"_wmo_render_missing_cache",
+		"_wmo_scene_cache_missing",
+		"_wmo_missing_cache",
+		"_shared_tex_cache",
+	]:
+		var cache: Dictionary = loader.get(cache_name)
+		_expect(cache.is_empty(), "%s should be empty after shutdown" % cache_name)
+
+	loader.free()
+
+
+func _expect(condition: bool, message: String) -> void:
+	if condition:
+		return
+	_failures += 1
+	push_error(message)

targets/00-render-baseline.md

@@ -1,6 +1,7 @@
 # M00 — Renderer Baseline
 
-<!-- OPENWC_TARGET:ACTIVE -->
+<!-- OPENWC_TARGET:DONE -->
+<!-- OPENWC_TARGET_DONE:M00:work/sindo-main-codex/m00-integrator-closeout:2026-07-13 -->
 
 ## Outcome
 
@@ -38,10 +39,10 @@ godot --headless --path . --script res://src/tools/capture_render_checkpoints.gd
 
 ## Evidence
 
-- Date: 2026-07-10
+- Date: 2026-07-13
-- Revision/worktree: `93bfe11` + worktree baseline changes.
+- Revision/worktree: merged M00 implementation through `f19c0c4`; closeout worktree `work/sindo-main-codex/m00-integrator-closeout`.
-- Commands: `.\tools\run_render_baseline.ps1 -DryRun -WaitSeconds 0.1 -MeasureSeconds 0.1 -Output user://render_baseline_runner_test`; `.\tools\run_render_baseline.ps1 -Output user://render_baseline_m00_2026-07-10 -CacheState existing`.
+- Commands: `.\tools\run_render_baseline.ps1 -Output user://render_baseline_m00_complete_2026-07-13 -CacheState existing -WaitSeconds 8 -MeasureSeconds 0.5 -ReferenceCheckpointDirectory .\sources\OpenWCReferenceCheckpoints -VisualComparisonReport user://render_baseline_m00_complete_2026-07-13/visual_comparison.json -VisualComparisonWidth 2560 -VisualComparisonHeight 1440`; `.\tools\run_render_baseline.ps1 -DryRun -WaitSeconds 0.1 -MeasureSeconds 0.1 -Output user://render_baseline_m00_post_merge`; `.\tools\verify_coordination.ps1`; `.\tools\verify_documentation.ps1`.
-- Results: headless load, renderer material smoke, M2 unique-id dedupe and manifest contract passed. Full run produced 14 PNGs and 14 result records for 7 cold/warm checkpoints. Actual renderer was Godot 4.6.1, Vulkan Forward+, NVIDIA RTX 5070, 1280x900, High profile, with all seven cache families present. Cold p95 range was 31.585..86.537 ms with max hitch 258.456 ms; warm p95 range was 18.824..38.085 ms with max hitch 163.363 ms. The final streaming snapshots had an empty tile queue. Report: `user://render_baseline_m00_2026-07-10/report.json`.
+- Results: the final GUI run produced fourteen cold/warm captures for seven checkpoints and all seven required coverage categories, with `compared=14` and `missing=0`. The post-merge dry-run passed project load, material, M2 unique-id dedupe, runtime-cache shutdown, manifest and five-point coordinate calibration checks. Coordination and documentation gates passed. Renderer shutdown follow-up removed retained Node/resource/RID diagnostics in focused and seven-checkpoint GUI runs.
-- Fidelity comparison: fixed positions/time/profile and current visual gaps are recorded, but no approved paired screenshots from the original WoW 3.3.5a build 12340 were available. This baseline does not claim parity.
+- Fidelity comparison: private original-client WoW 3.3.5a build 12340 references cover terrain, ADT boundary, dense M2, large WMO, liquid, animated M2 and sky transition. Every measured pair exceeds the strict visual tolerance and is recorded as a current gap rather than parity. Sky framing is approximately paired; animated M2 is asset-paired but placement-unpaired because the OpenWC Goldshire probe is synthetic. Full metrics and provenance are recorded in `docs/M00_FINAL_PAIRED_EVIDENCE.md`.
-- Changed files: `RENDER.md`, `docs/RENDER_BASELINE.md`, `src/scenes/streaming/streaming_world_loader.gd`, `src/tools/capture_render_checkpoints.gd`, `src/tools/render_baseline_manifest.json`, `src/tools/verify_render_baseline_manifest.gd`, `tools/run_render_baseline.ps1`, `targets/00-render-baseline.md`.
+- Changed files: `RENDER.md`, `docs/RENDER_BASELINE.md`, `docs/M00_FINAL_PAIRED_EVIDENCE.md`, `docs/modules/world-renderer.md`, renderer baseline scripts/verifiers, manifest/capture tooling, streaming shutdown ownership and M00 coordination claims.
-- Remaining risks: original-client paired comparison is still required before DONE; D3D12 descriptor heap creation failed and the measured run fell back to Vulkan; shutdown reported leaked renderer RIDs/resources; current captures intentionally preserve visible terrain/placement/material/animation gaps, including the synthetic native animated M2 probe; perceptual image diff/tolerance is documented but not automated yet.
+- Remaining risks: renderer parity is not claimed; documented terrain/material/placement/animation/lighting/liquid/culling gaps remain future renderer work. D3D12 descriptor heap creation can fall back to Vulkan. Godot can emit a timing-dependent anonymous zero-reference `RefCounted` teardown warning without retained Node/resource/RID ownership.

targets/01-coordinates-and-seams.md

@@ -1,6 +1,6 @@
 # M01 — Coordinates and Architecture Seams
 
-<!-- OPENWC_TARGET:OPEN -->
+<!-- OPENWC_TARGET:ACTIVE -->
 
 ## Outcome
 

targets/DEVELOPMENT_ROADMAP.md

@@ -21,7 +21,7 @@ OpenWC должен предоставить четыре согласованн
 
 - MPQ/BLP/ADT/WDT/M2/WMO native parsing и renderer vertical slice уже существуют.
 - Runtime streaming, terrain quality, MultiMesh M2, WMO caches, liquids, sky и character experiments находятся в рабочем состоянии, но сосредоточены в крупных orchestration scripts.
-- Renderer baseline M00 создан; до `DONE` не хватает paired comparison с оригинальным клиентом и закрытия известных diagnostic gaps.
+- Renderer baseline M00 завершён: paired comparison с оригинальным клиентом записывает измеренные gaps без заявления parity, а обязательные diagnostic gaps закрыты или явно классифицированы. Текущая работа M01 вводит coordinate и architecture seams.
 - Gameplay domain, network protocol, production UI/Lua, audio orchestration и server adapters в основном предстоит реализовать.
 - Editor plugin пока решает extraction/preview задачи, но не является полноценной authoring platform.
 

targets/README.md

@@ -10,7 +10,7 @@
 
 ## Current target
 
-`M00` — [00-render-baseline.md](00-render-baseline.md)
+`M01` — [01-coordinates-and-seams.md](01-coordinates-and-seams.md)
 
 Одновременно `ACTIVE` может быть только одна цель. Следующая цель становится `ACTIVE` после появления валидной `OPENWC_TARGET_DONE` метки у предыдущей.
 
@@ -33,8 +33,8 @@
 
 | ID | Цель | Зависит от | Статус |
 |---|---|---|---|
-| M00 | [Renderer baseline](00-render-baseline.md) | — | ACTIVE |
+| M00 | [Renderer baseline](00-render-baseline.md) | — | DONE |
-| M01 | [Coordinates and architecture seams](01-coordinates-and-seams.md) | M00 | OPEN |
+| M01 | [Coordinates and architecture seams](01-coordinates-and-seams.md) | M00 | ACTIVE |
 | M02 | [Player decomposition](02-player-decomposition.md) | M01 | OPEN |
 | M03 | [Renderer facade and extraction](03-renderer-facade.md) | M02 | OPEN |
 | M04 | [Godot Editor shell](04-editor-shell.md) | M03 | OPEN |

tools/run_render_baseline.ps1

@@ -54,6 +54,7 @@ try {
     Invoke-GodotStep "project-load" @("--headless", "--path", ".", "--quit")
     Invoke-GodotStep "render-materials" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_materials.gd")
     Invoke-GodotStep "m2-unique-dedupe" @("--headless", "--path", ".", "--script", "res://src/tools/verify_m2_unique_dedupe.gd")
+    Invoke-GodotStep "runtime-cache-shutdown" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_runtime_cache_shutdown.gd")
     Invoke-GodotStep "baseline-manifest" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_baseline_manifest.gd")
     Invoke-GodotStep "coordinate-calibration" @("--headless", "--path", ".", "--script", "res://src/tools/verify_render_coordinate_calibration.gd")