Shows an ephemeral "← → to navigate" hint anchored to the focused item the first time a roving-tabindex composite (Toolbar, TabList, SegmentedControl, etc.) receives keyboard focus. It teaches sighted keyboard users that arrow keys move within the group. The hint renders arrow keys with Kbd in the top layer (popover="manual") and is CSS-anchor-positioned to the focused element, so overflow containers never clip it. It auto-dismisses on the first arrow press, on timeout, or on blur, and does not re-show for that instance. Toolbar, TabList, and SegmentedControl wire this in automatically; reach for the hook directly only when building a custom roving-tabindex widget.
pnpm dlx shadcn@latest add "https://astryx.atmeta.com/shadcn/hook-use-keyboard-hint.json"