Rewrite the card without Tailwind

Plan step 36 (containment group): <x-card>'s class lists move into
resources/css/components/card.css, keyed on data-md-card (per variant),
data-md-card-figure/-body/-header/-heading/-title/-subtitle/-menu/
-content/-actions. A row (data-md-list-row) renders the shared
md-state-layer and md-focus-ring classes for its tint and ring
(foundation/interaction.css) instead of copying their rules; card.css
adds only the per-state elevation the shared class has no opinion on
(ElevatedCardTokens.kt/FilledCardTokens.kt/OutlinedCardTokens.kt), the
press/hover exclusion for a card's own nested buttons, and the ring for
a non-actionable row whose focus lands on its opener rather than the
card. data-md-dragged is read automatically by the shared class's own
16% tint; card.css only adds its elevation levels 3/4.

Hooks renamed data-list-row -> data-md-list-row, data-list-open ->
data-md-list-open, data-list-actionable -> data-md-list-actionable,
data-dragged -> data-md-dragged, updated in the same commit:
resources/js/search.js and list-rows.js's consumers, table.css's
comment, the showcase (index, data and containment sections),
tests/Browser/ContainmentTest.php, and the development skill's card
and table examples.

Imported from the Containment block of components.css.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

resources/css/components.css

@@ -58,5 +58,6 @@
 /* Containment */
 @import './components/divider.css';
 @import './components/collapse.css';
+@import './components/card.css';
 
 /* Navigation */