[apotema]

Add optional cursor controls to the shared window interface so game code can hide the system pointer for its own artwork without importing a backend.

CursorControls.fromWindow adapts the optional setCursorVisible(bool) bool and isCursorOverWindow() bool declarations into callbacks for the engine host to bind. Missing declarations safely return false; existing window backends and the required contract remain unchanged. The visibility result tells callers whether it is safe to draw a replacement pointer.

Validation: zig build test --summary all passed 230/230 tests, including forwarding, unavailable-backend and partial-backend cases.

Part of labelle-toolkit/labelle-bgfx#204. Platform implementation: labelle-toolkit/labelle-bgfx#205. Companion engine and assembler changes expose and bind these controls for game scripts. Merge/release this core change before the engine companion.

Companion PRs: core #82, engine #915, assembler #820, bgfx #205.

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[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-13T08:21:26.053677Z	3983336	Draft marked ready

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