test(M03): enforce streamer internal access boundary

docs/modules/world-renderer.md

@@ -68,6 +68,8 @@ Forbidden dependencies:
 Runtime, capture and probe callers use `WorldRenderFacade` for focus and metrics.
 `StreamingWorldLoader` remains the internal scene implementation while later M03
 packages add environment, entity-visual and ground-query contracts.
+Gameplay modules and Godot `EditorPlugin` package sources are repository-gated
+from externally reading/writing loader-private queue, task, cache and tile-state fields.
 
 | Symbol | Kind | Purpose | Thread/lifetime | Errors |
 |---|---|---|---|---|
@@ -271,6 +273,9 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 - Budget scheduler contract: exact lane exhaustion, shared chunk removal/create
   priority, independent lanes, frame reset, invalid limits, terminal cancellation,
   dependency boundaries and bounded permit timing without loading a world scene.
+- Internal-access contract: derives the current streamer's private queue/task/
+  cache/state field inventory and rejects external member/reflection access from
+  gameplay or EditorPlugin package code.
 - Integration/E2E: Eastern Kingdoms/Kalimdor streaming scenes, seven M00
   cold/warm checkpoints and one dedicated mapped server-spawn checkpoint.
 - Fidelity evidence: семь локальных build 12340 reference JPG покрывают terrain/ADT/M2/WMO/liquid/sky и реальный `GryphonRoost01`; automated cold/warm metrics имеют `compared=14`, `missing=0`. Sky использует приблизительно paired camera, а animated-M2 остаётся asset-paired/placement-unpaired из-за synthetic probe.
@@ -299,6 +304,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | Stable renderer facade | Partial | `M03-RND-FACADE-001` contract/runtime/tool regressions | Focus and metrics migrated; environment/entity visuals/ground query remain |
 | Pure streaming target planner | Implemented | `M03-RND-STREAMING-PLANNER-001` asset-free contract/performance regression | Queue scheduling and loaded-tile LOD application remain in streamer |
 | Bounded render budget scheduler | Implemented | `M03-RND-SCHEDULER-001` asset-free permit/cancellation/performance regression | Queue storage, worker concurrency and operation execution remain in streamer/services |
+| Gameplay/editor internal-access boundary | Implemented | `M03-RND-INTERNAL-ACCESS-GATE-001` scans actual private streamer declarations against gameplay and EditorPlugin sources | Renderer diagnostic probes remain a scoped exception pending ground-query/readiness facade contracts |
 
 ## Known gaps and risks
 
@@ -319,6 +325,9 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 - 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.
+- `probe_render_terrain_height.gd` remains a renderer-only diagnostic exception
+  that reads tile readiness/terrain internals; it is excluded from the gameplay/
+  EditorPlugin gate until equivalent ground-query and readiness facade contracts exist.
 
 ## Source map
 
@@ -335,6 +344,7 @@ Exact exported settings and cache versions remain documented in [`../../RENDER.m
 | `src/tools/verify_world_render_facade.gd` | Facade delegation, snapshot isolation and consumer wiring 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 boundary gate derived from private streamer fields |
 | `addons/mpq_extractor/loaders/adt_builder.gd` | Terrain/material/liquid construction |
 | `addons/mpq_extractor/loaders/m2_builder.gd` | Static M2 mesh/material construction |
 | `addons/mpq_extractor/loaders/m2_native_animated_builder.gd` | Native animated M2 experiment |