Top Nav
Dashboard top navigation, demo only. Collapses to two rows at ≤ --bp-md.
The application header with route links. Optional
trailing slot (e.g. avatar) is right-aligned. Shown inline here; normally fixed to the top of the viewport. At ≤768px (--bp-md / mediaQueries.maxMd): two-row chrome: brand and trailing on row 1, full-width scrollable pill links on row 2. --header-height includes safe-area inset on notched devices.