Move SealShare onto Livewire Material

Replaces maryUI and daisyUI with nonameweb/livewire-material: the Vibrant
indigo scheme, a system/light/dark theme under sealshare-theme, one top
app bar with the account menu, the upload drop zone and link-ready
moments, M3 fields, dialogs instead of wire:confirm, snackbars instead of
flashed messages, a sortable admin table, and the starter-kit cleanup.
Docker builds assets after Composer; CI drops the Flux step.

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

tests/Feature/DesignLanguageTest.php

@@ -0,0 +1,19 @@
+<?php
+
+use Illuminate\Support\Facades\File;
+use NoNameWeb\LivewireMaterial\Testing\DesignGuard;
+
+test('views and code use only what the design system compiles', function () {
+    expect(DesignGuard::scan([resource_path('views'), resource_path('js'), app_path()])->violations())->toBe([]);
+});
+
+test('nothing of maryUI or daisyUI is left behind', function () {
+    $leftovers = collect(['resources/views', 'resources/js', 'resources/css', 'app'])
+        ->flatMap(fn (string $path) => File::allFiles(base_path($path)))
+        ->filter(fn (SplFileInfo $file): bool => preg_match('/\b(base-content|bg-base-\d|btn(-[a-z]+)?|x-mary-|daisyui|robsontenorio)\b/', $file->getContents()) === 1)
+        ->map(fn (SplFileInfo $file): string => str_replace(base_path().'/', '', $file->getPathname()))
+        ->values()
+        ->all();
+
+    expect($leftovers)->toBe([]);
+});