coord(M03): hand off render budget scheduler

coordination/claims/M03-RND-SCHEDULER-001.md

@@ -81,7 +81,33 @@ stopping permit issuance after renderer teardown cancellation.
 
 ## Status
 
-- State: active
-- Done: claim and extraction contract defined
-- Next: implement scheduler, migrate existing bounded loops and add verification/docs
+- State: ready-for-review
+- Done: extracted all 16 historical operation quotas, migrated ordered drains,
+  added terminal teardown cancellation, asset-free verification and module docs
+- Next: M03 integrator reviews and merges `e52f703`
 - Blocked by:
+
+<!-- OPENWC_HANDOFF:READY:M03-RND-SCHEDULER-001:e52f703 -->
+
+## Handoff
+
+- Commit: `e52f703`
+- Results: `RenderBudgetScheduler` owns only per-frame lane counters and terminal
+  cancellation; `StreamingWorldLoader` retains queue order, task/cache/node/RID
+  ownership and operation execution. Chunk removal/create share one historical budget.
+- Verification: scheduler `cases=6 iterations=20000 elapsed_ms=7.495`; planner
+  `cases=5 average_ms=1.879`; facade/focus contracts passed; coordinate boundary
+  `files=111 consumers=6`; renderer manifest `checkpoints=7 coverage=7 caches=7`;
+  shutdown ownership, documentation, coordination and diff gates passed.
+- Fidelity: exported defaults, quality presets, queue order, operation sites,
+  cache versions and visible rendering rules are unchanged. Seven checkpoint
+  plans remain valid. No build-12340 parity claim is added.
+- External/local inputs: ignored native DLL and two generated ADT resource scripts
+  were copied from master only for the worktree parse/smoke and then removed.
+  Proprietary extracted ADT data was unavailable, producing expected degraded-data diagnostics.
+- Remaining risks: queue storage length and worker concurrency remain streamer-owned;
+  cancellation stops permit issuance but does not interrupt in-flight work; exact
+  p95/p99 impact still requires an asset-backed baseline.
+- Documentation: new scheduler module spec with API, input/output, data-flow,
+  sequence, lifecycle, ownership, cancellation, performance and source-map sections;
+  world renderer, module registry and renderer implementation notes updated.