feat: Nova homepage, profile redesign, and legacy view system overhaul

Homepage
- Add HomepageService with hero, trending (award-weighted), fresh uploads,
  popular tags, creator spotlight (weekly uploads ranking), and news sections
- Add React components: HomePage, HomeHero, HomeTrending, HomeFresh,
  HomeTags, HomeCreators, HomeNews (lazy-loaded below the fold)
- Wire home.blade.php with JSON props, SEO meta, JSON-LD, and hero preload
- Add HomePage.jsx to vite.config.js inputs

Profile page
- Hero banner with random user artwork as background + dark gradient overlay
- Favourites section uses real Artwork models + <x-artwork-card> for CDN URLs
- Newest artworks grid: gallery-grid → grid grid-cols-2 gap-4

Edit Profile page (user.blade.php)
- Add hero banner (featured wallpaper/photography via artwork_features,
  content_type_id IN [2,3]) sourced in UserController
- Remove bg-deep from outer wrapper; card backgrounds: bg-panel → bg-nova-800
- Remove stray AI-generated tag fragment from template

Author profile links
- Fix all /@username routes in: HomepageService, MonthlyCommentatorsController,
  LatestCommentsController, MyBuddiesController and corresponding blade views

Legacy view namespace
- Register View::addNamespace('legacy', resource_path('views/_legacy'))
  in AppServiceProvider::boot()
- Convert all view('legacy.x') and @include('legacy.x') calls to legacy::x
- Migrate legacy views to resources/views/_legacy/ with namespace support

resources/views/web/comments/latest.blade.php

@@ -18,7 +18,7 @@
             @foreach ($comments as $comment)
                 @php
                     $artUrl    = '/art/' . (int)($comment->id ?? 0) . '/' . ($comment->artwork_slug ?? 'artwork');
-                    $userUrl   = '/profile/' . (int)($comment->commenter_id ?? 0) . '/' . rawurlencode($comment->uname ?? 'user');
+                    $userUrl   = ($comment->commenter_username ?? null) ? '/@' . $comment->commenter_username : '/profile/' . (int)($comment->commenter_id ?? 0);
                     $avatarUrl = \App\Support\AvatarUrl::forUser((int)($comment->commenter_id ?? 0), $comment->icon ?? null, 40);
                     $ago       = \Carbon\Carbon::parse($comment->datetime ?? now())->diffForHumans();
                     $snippet   = \Illuminate\Support\Str::limit(strip_tags($comment->comment_description ?? ''), 160);