render: extract static M2 build resource observer

targets/03-renderer-facade.md

@@ -58,7 +58,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   `M03-RND-M2-STATIC-BATCH-MATERIALIZER-001`,
   `M03-RND-M2-BUILD-QUEUE-001`,
   `M03-RND-M2-BUILD-DISPATCH-PLANNER-001`,
-  `M03-RND-M2-BUILD-RESOURCE-SNAPSHOT-001`
+  `M03-RND-M2-BUILD-RESOURCE-SNAPSHOT-001`,
+  `M03-RND-M2-STATIC-BUILD-RESOURCE-OBSERVER-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
@@ -275,6 +276,10 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   materializers, animation/Mesh pipelines, Mesh/prototype state, shutdown, facade,
   internal-access `30`, manifest and checkpoint dry-run `7/7`, documentation and
   coordination remained green.
+  M2 static build resource observer passed `cases=11 iterations=20000
+  elapsed_ms=64.158` with invalid/cached/Mesh-identity/missing/pending outcomes,
+  exact candidate order, GLB schema fallback and source ownership. All 55
+  autonomous headless regressions passed; internal-access remains `30`.
   M02 terrain-query regression
   remained green (13 pre-existing expired M00 claim warnings).
 - Fidelity comparison: all 16 historical operation limits and drain sites were
@@ -429,6 +434,7 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   typed M2 build job/queue and loader enqueue/drain/progress/cancel/clear adapters,
   stateless M2 build dispatch planner and loader resource-observation/action adapter,
   typed M2 build resource snapshot and loader/dispatch/materializer adapters,
+  static M2 build resource observer and loader/cache/pipeline/snapshot 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
@@ -455,6 +461,8 @@ Runtime и Editor используют facade; planner/scheduler тестиру
   separated and dispatch decisions are explicit, while resource observation/
   requests, action execution and root cleanup remain in loader; resource state is
   typed per operation but its producing service is not yet extracted;
+  static lookup/request production is extracted, while animated observation and
+  both ResourceLoader finalize drains remain loader-owned;
   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;