Add the Material 3 Expressive foundation

Colour, shape, type, elevation and motion as tokens and Tailwind
utilities; `php artisan material:scheme`, which generates an app's colour
roles with Google's material-color-utilities (spec 2025); the theme head
script with light, dark and system and its Alpine store; Google Sans Flex;
every Material Symbol (4,135, outlined and filled) drawn by <x-icon>
without blade-icons; all 35 M3 Expressive shapes, ported from androidx, as
<x-shape>; the x-figure directive; the Toasts concern; DesignGuard for
applications' tests; and a showcase with every token, both themes side by
side and an icon search.

Colour utilities are `@theme inline`, so a section with its own
data-theme repaints; without it they resolve once on :root.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9NnLxnPp8vaaurb3Z1MFy

resources/svg/symbols/filled/health_and_beauty.svg

@@ -0,0 +1 @@
+<svg fill="currentColor" xmlns="http://www.w3.org/2000/svg" viewBox="0 -960 960 960"><path d="M680-80q-17 0-28.5-11.5T640-120q0-17 11.5-28.5T680-160h120v-80H680q-17 0-28.5-11.5T640-280q0-17 11.5-28.5T680-320h120v-80H680q-17 0-28.5-11.5T640-440q0-17 11.5-28.5T680-480h120v-80H680q-17 0-28.5-11.5T640-600q0-17 11.5-28.5T680-640h120v-80H680q-17 0-28.5-11.5T640-760q0-17 11.5-28.5T680-800h160q33 0 56.5 23.5T920-720v560q0 33-23.5 56.5T840-80H680Zm-499-53L63-458q-10-27-.5-54T97-554l143-86v-200q0-17 11.5-28.5T280-880h80q17 0 28.5 11.5T400-840v200l143 86q25 15 34.5 42t-.5 54L459-133q-8 24-28.5 38.5T384-80H256q-26 0-46.5-14.5T181-133Z"/></svg>