[ns-ui] A full-width section divider rendered as a real teletext / videotex ALPHAMOSAIC graphics band: each character cell is a 6-bit code across a 2-wide x 3-tall sub-cell 'sextant' grid, the actual broadcast alphamosaic addressing (distinct from this registry's 2x2 quadrant block dividers and 2x4 braille-
pnpm dlx shadcn@latest add "https://registry.directory/r/nikolas-sapa/divider-teletext-mosaic.json"