- the LandCell event doc states the deferred cross-block batch rule (the
same-landblock lookahead text was stale);
- the AlphaSubmitMark arm's comment gives the true reason it is not a
flush point (it only enqueues into the CPU alpha list; the drain leaves
flush first);
- the pending terrain batch is cleared with the other transient frame
lists in AbortFrame/BeginFrame;
- CompleteWalkTerrainFrame runs in a finally so a throwing Replay cannot
leak its accumulated ticks into the next frame's sample;
- CopyRenderableEmittersInCell keeps its own doc comment;
- the outdoor-root LandCell pin now observes one real cell turn after its
terrain;
- the oh1 landscape contract's stale "whole pre-stage" prose is resolved.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>