{# @description The sticky app header: site icon and breadcrumb trail leading, actions trailing. #}
{# @prop :sticky:boolean | description:"Whether the header sticks to the top of the viewport on scroll." #}
{# @prop class:text | description:"Background classes; defaults to layout.navbar.class." #}
{# @slot:above — Content placed above the navbar row. #}
{# @slot:below — Content placed below the navbar row. #}
{# @slot:right — Extra header content; shares the desktop widget list's visibility rule. #}
{# @slot:tray — Content placed after the navbar row, e.g. a search tray. #}