render: extract M2 build queue

targets/03-renderer-facade.md

@@ -55,7 +55,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   `M03-RND-M2-ANIMATED-SCENE-FINALIZER-001`,
   `M03-RND-M2-ANIMATION-PLAYBACK-001`,
   `M03-RND-M2-ANIMATED-INSTANCE-MATERIALIZER-001`,
-  `M03-RND-M2-STATIC-BATCH-MATERIALIZER-001`
+  `M03-RND-M2-STATIC-BATCH-MATERIALIZER-001`,
+  `M03-RND-M2-BUILD-QUEUE-001`
 - Commands: dedicated scheduler/planner/facade/focus/coordinate/manifest/shutdown
   headless verifiers; Godot cold editor parse; coordination, documentation and diff gates.
 - Results: scheduler `cases=6 iterations=20000 elapsed_ms=10.216`; planner
@@ -240,6 +241,13 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   Post-merge static materializer (`1.327ms`), build planner, Mesh cache, animated
   materializer, shutdown, facade, internal-access `30`, checkpoint dry-run `7/7`,
   documentation and coordination gates remained green.
+  M2 build queue passed `cases=13 iterations=100 elapsed_ms=66.247` with invalid
+  enqueue guards, exact root/group references, insertion-order key snapshots,
+  FIFO rotation, duplicate replacement, stale-key cleanup, atomic cursor adoption,
+  detached diagnostics and engine-lifetime/source boundaries. All 52 autonomous
+  headless regressions and checkpoint dry-run `7/7` passed; the proprietary ADT
+  probe remained unavailable. Internal-access inventory remains `30`; resource
+  readiness, permits, materializer dispatch and root destruction remain loader-owned.
   M02 terrain-query regression
   remained green (13 pre-existing expired M00 claim warnings).
 - Fidelity comparison: all 16 historical operation limits and drain sites were
@@ -268,6 +276,9 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   origin subtraction and the `0.0001` scale clamp.
   M2 build batching retains animated/static limit selection, minimum-one clamp,
   remaining-transform cap and the exact offset/group-completion cursor rules.
+  Pending M2 builds retain keyed latest-job replacement, duplicate/stale FIFO
+  entries, one-key rotation, strong root/group references and exact group/offset/
+  serial progression; releasing queue records still never frees scene nodes.
   WMO cache-key normalization, positive MODF identity with tile/index fallback
   and world position/Euler/unclamped-scale transforms are unchanged across
   lightweight render, cached-scene and live-prototype paths.
@@ -382,6 +393,7 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   M2 animation playback controller and loader native/imported playback adapters,
   M2 animated instance materializer and loader log/Editor-owner adapter,
   M2 static batch materializer and loader readiness/cursor/Editor-owner adapter,
+  typed M2 build job/queue and loader enqueue/drain/progress/cancel/clear adapters,
   expanded facade/internal-access/coordinate verifiers; work-package claims and this evidence.
 - Remaining risks: worker concurrency and stale-result validation remain
   streamer-owned; cancellation stops new permits but does not interrupt
@@ -404,7 +416,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   main-thread work; asset-backed traversal/visual/leak/p95/p99 evidence is pending;
   static MultiMesh materialization is also separated but remains synchronous;
   headless timing does not measure transform upload GPU cost and spatial-cell
-  batching still needs culling/performance evidence;
+  batching still needs culling/performance evidence; typed M2 pending state is
+  separated, while resource readiness/dispatch and root cleanup remain in loader;
   WMO ResourceLoader/FileAccess I/O, live fallback and group materialization
   remain in the loader;
   asset-backed WMO placement/portal/material/leak/p95/p99 evidence remains pending;