Plan step 38: every example moves onto the layout components and the
md-* text classes. Wrapper divs that existed only to give an Alpine
scope to a button group or a connected <x-group> ("A connected group
that owns its selection", "Square groups", "A choice as a connected
group") become <x-stack>/<x-grid> carrying the x-data directly, which
also gives them M3's full-width stretch in place of w-full. The
loading indicator's two sized, tertiary-coloured variants and the FAB
menu's bounded demo box move to data-md-showcase-* hooks in
showcase.css; hint-class="text-warning" becomes hint-class="md-ink-warning",
the exact example the <x-group> header itself documents.
No demo content removed; every id, aria-label and input[name] the
Chromium ActionsTest selectors read (#buttons, showcase-theme,
showcase-days, the "Tonal" tooltip, the progressbar, collapse-on-scroll,
data-md-selection) is unchanged.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9
