docs(M03): hand off WMO render build planner

coordination/claims/M03-RND-WMO-RENDER-BUILD-PLANNER-001.md

@@ -79,14 +79,25 @@ while preserving mesh-before-MultiMesh ordering and one budget permit per group.
 
 ## Status
 
-- State: claimed
-- Done: cursor and ownership boundary published
-- Next: implement planner, migrate loader decision, tests and docs
+- State: ready for integration
+- Done: planner and loader adapter implemented; Node/Resource/material/job/queue/
+  permit ownership retained in loader; regressions, dry-run and docs passed
+- Next: integrator merge and post-merge verification
 - Blocked by:
 
 ## Handoff
 
-- Commit:
-- Results:
-- Remaining risks:
-- Documentation updated:
+- Commit: `3a6b1d3`
+- Results: dedicated planner PASS (`cases=9`, `iterations=20000`,
+  `elapsed_ms=11.914`); WMO registry/resolver/material/shutdown and 18 adjacent
+  M2/terrain/facade/scheduler/streaming/coordinate regressions PASS;
+  documentation and coordination gates PASS; checkpoint dry-run PASS `7/7`.
+- Remaining risks: no proprietary WMO corpus, original-client paired capture or
+  traversal p95/p99; dry-run reports expected missing ADT/DBC/character assets;
+  WMO Resource arrays and untyped build jobs/queues remain loader-owned.
+- Documentation updated: inline planner API;
+  `docs/modules/wmo-render-build-step-planner.md`, module registry,
+  `docs/modules/world-renderer.md`, `RENDER.md` with data-flow and sequence
+  diagrams, ownership, failure/recovery and source map.
+
+<!-- OPENWC_HANDOFF:READY:M03-RND-WMO-RENDER-BUILD-PLANNER-001:3a6b1d3 -->