Add the snackbar, badges, rich tooltips, alerts, stats and empty states

<x-toast> hosts the snackbar queue for the Toasts concern and
window.materialToast(), one at a time, paused on hover and focus, with
an optional action; it listens from the moment its script loads, so a
toast dispatched before Alpine starts is shown rather than lost.
<x-badge> is M3's dot and count, plus a tonal or outlined status label;
<x-rich-tooltip> is transient or persistent; <x-alert>, <x-stat> and
<x-empty-state> are built from M3's parts.

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

tests/Feature/Components/StatTest.php

@@ -0,0 +1,14 @@
+<?php
+
+it('shows a figure that counts, with its title and description', function () {
+    $html = (string) $this->blade('<x-stat title="Shares" value="1,204" icon="link" description="12 this week"><span>quota</span></x-stat>');
+
+    expect($html)
+        ->toContain('bg-surface-container')
+        ->toContain('Shares')
+        ->toContain('x-figure>1,204</p>')
+        ->toContain('type-emphasized-headline-md tabular-nums')
+        ->toContain('12 this week')
+        ->toContain('<span>quota</span>')
+        ->toContain('<svg');
+});