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+# M03-RND-M2-BUILD-BATCH-PLANNER-001 — M2 build batch planner
+
+<!-- OPENWC_CLAIM:M03-RND-M2-BUILD-BATCH-PLANNER-001:sindo-main-codex:2026-07-20 -->
+
+## Ownership
+
+- Target: M03
+- Program: RND
+- Owner/Agent ID: sindo-main-codex
+- Branch: `work/sindo-main-codex/m03-m2-build-batch-planner`
+- Lease expires UTC: 2026-07-20
+- Integrator: M03 milestone integrator
+
+## Outcome
+
+Extract pure static/animated M2 build batch sizing and cursor progression from
+the loader build-job loop into a scene-free planner.
+
+## Non-goals
+
+- Move build-job/queue ownership, tile eligibility or cancellation.
+- Move animation/mesh requests, cache lookup, queue rotation or retry behavior.
+- Create Nodes, MultiMesh, Mesh, materials or RIDs.
+- Change render-budget permit consumption or per-profile batch limits.
+- Introduce spatial-cell batching or claim asset-backed performance parity.
+
+## Paths
+
+- Exclusive: `src/render/m2/m2_build_batch_planner.gd`,
+  `src/tools/verify_m2_build_batch_planner.gd`,
+  `docs/modules/m2-build-batch-planner.md`, this claim
+- Shared/hotspots: `src/scenes/streaming/streaming_world_loader.gd`,
+  `docs/modules/m2-placement-grouper.md`, `docs/modules/world-renderer.md`,
+  `docs/modules/README.md`, `RENDER.md`, `targets/03-renderer-facade.md`
+- Generated/ignored: `.godot`, native DLL, generated ADT resources, caches and
+  proprietary renderer corpus
+
+## Contracts and data
+
+- Input: transform count, current offset, animated/static path selector and raw
+  animated/static batch limits
+- Output: fresh plan Dictionary with effective batch size, batch count, next
+  offset and group-complete flag
+- Selected batch limit clamps to at least one
+- Batch count clamps to remaining non-negative transforms
+- Group completes when no batch can be consumed or offset plus batch reaches end
+- Queue/cache/schema/coordinate/profile values: unchanged
+
+## Dependencies
+
+- Requires: current master `9d74d99`; grouped transform arrays from
+  `M2PlacementGrouper`
+- Blocks: broader M2 build-job state extraction
+- External state: none; tests use scalar synthetic counts/limits
+
+## Verification
+
+- Commands: dedicated static/animated/limit/remaining/complete/empty/offset and
+  bounded timing verifier; loader source boundary; grouper/transform/registry plus
+  facade/internal-access/manifest/shutdown/documentation/coordination gates
+- Fidelity evidence: exact batch/count/cursor formulas moved unchanged
+- Performance budget: constant-time scalar/container calculation; no Node,
+  Resource, RID, task, queue, mutex, cache or file access
+
+## Documentation deliverables
+
+- Inline planner API documentation
+- New module spec with inputs/outputs, data-flow, lifecycle, ownership, failure,
+  performance, fidelity limitations and source map
+- Grouper, renderer/module registry and `RENDER.md` updates
+
+## Simplicity and naming
+
+- Important name: `M2BuildBatchPlanner`
+- Simplest solution: one stateless `plan_batch` query with a small detached result
+- Rejected complexity: job classes, state machine framework, callbacks, signals,
+  Resources, strategies or scheduler integration
+- Unavoidable complexity: loader retains raw build-job Dictionaries
+- Measured optimization evidence: bounded synthetic planning loop
+
+## Status
+
+- State: claimed
+- Done: formula, ownership and non-goal boundary published
+- Next: implement planner, migrate cursor calculation, tests and docs
+- Blocked by:
+
+## Handoff
+
+- Commit:
+- Results:
+- Remaining risks:
+- Documentation updated: