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

resources/views/partials/head.blade.php

@@ -1,5 +1,5 @@
 <meta charset="utf-8" />
-<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
 
 <title>{{ $title ?? (\App\Models\Setting::get('site_title') ?: config('app.name')) }}</title>
 
@@ -7,7 +7,6 @@
 <link rel="icon" href="/favicon.svg" type="image/svg+xml">
 <link rel="apple-touch-icon" href="/apple-touch-icon.png">
 
-<link rel="preconnect" href="https://fonts.bunny.net">
-<link href="https://fonts.bunny.net/css?family=instrument-sans:400,500,600" rel="stylesheet" />
+<x-theme-script />
 
 @vite(['resources/css/app.css', 'resources/js/app.js'])