Plan step 25 (navigation Missing): NavigationBarTokens.TallContainerHeight,
80dp, had no prop. `<x-navigation-bar tall>` picks it, and the tall container
keeps the vertical item layout at every width — the 600px horizontal layout is
the short bar's alone, so every rule behind that container query now names
`:not([data-tall])`. `<x-app-shell tall-bar>` passes it through and grows
`--material-bottom-bar` to 5rem with it.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
