Implement wrist menu raycasting and trigger handling

[Barzbrown]

Summary

• add canvas-labeled plane buttons for the wrist menu and keep references for raycasting
• attach the wrist menu to the left controller pose and invoke per-frame raycast updates
• introduce a right-hand laser ray, hover targeting, and trigger handling for tools and boards

Testing

• not run

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https://chatgpt.com/codex/tasks/task_e_68feeec995988326a4a6ac38fcee5675

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Trigger threshold logic always evaluates as pressed

The nullish/ternary expression button.value ?? button.pressed ? 1 : 0 is parsed as (button.value ?? button.pressed) ? 1 : 0, so any defined analog value (even 0) evaluates as truthy and the function returns true on every frame a gamepad exposes button.value. This means clicking tools or drawing strokes triggers immediately even when the trigger is not pulled past TRIGGER_THRESHOLD. The condition should compare the analog value (or a button.pressed fallback) to the threshold before converting to boolean.

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