A complete static list with an optional, explicitly enabled finite preview.

Requires id, accessible_label and nonempty items maps with unique string key, nonblank text and optional image. Images accept only src, alt, width, height, srcset, sizes, loading and decoding; empty alt means decoration accompanying the required text. No slots, links or actions are cloned. Text is escaped, image metadata uses the shared media validation.

Mode defaults to :static. :preview adds an initially unchecked, unnamed checkbox. Check to enable one traversal, uncheck to stop/reset, then check to replay. Checked is enablement, not observed playback. :brief lasts 2.5s; :default lasts 5s, with no delay or repeat. Direction is :inline_start (default) or :inline_end, following inherited writing direction.

One inert, aria-hidden, ID-free decorative duplicate is visible only during the finite preview. Completion restores the complete canonical list. Missing CSS or joint capabilities, motion: :none, ancestor data-shadcn-motion="reduce", and OS reduced motion keep static content. Native checkbox state may reset on replacement; callers own persistence. No runtime, visibility observer, autoplay or perpetual offscreen work ships.