Module accessibility 

Accessibility Layer — semantic roles, focus management, screen reader mapping.

Every native widget framework already has accessibility built into its widgets. Our job is to ensure the right semantics reach the platform:

• iOS: UIAccessibility (VoiceOver)
• Android: AccessibilityNodeInfo (TalkBack)
• macOS: NSAccessibility (VoiceOver)
• Windows: UI Automation (Narrator)
• Web: ARIA attributes

The accessibility tree is a parallel structure to the shadow tree. Not every visual node is an accessibility node — we merge/prune to match how screen readers expect to navigate.

Structs

AccessibilityAction

Custom accessibility actions.

AccessibilityInfo

Complete accessibility info for a node.

AccessibilityState

Accessibility state for a node.

AccessibilityValue

Accessibility value (for adjustable elements like sliders).

FocusChange

FocusConfig

FocusManager

Manages keyboard/accessibility focus across the application.

Enums

AccessibilityRole

Semantic role of a UI element (maps to platform accessibility APIs).

LiveRegion

Live region announcement policy.

Traits

AccessibilityBridge

Platform bridges implement this to push accessibility info to the OS.