feat: artwork page carousels, recommendations, avatars & fixes

- Infinite loop carousels for Similar Artworks & Trending rails
- Mouse wheel horizontal scrolling on both carousels
- Author avatar shown on hover in RailCard (similar + trending)
- Removed "View" badge from RailCard hover overlay
- Added `id` to Meilisearch filterable attributes
- Auto-prepend Scout prefix in meilisearch:configure-index command
- Added author name + avatar to Similar Artworks API response
- Added avatar_url to ArtworkListResource author object
- Added direct /art/{id}/{slug} URL to ArtworkListResource
- Fixed race condition: Similar Artworks no longer briefly shows trending items
- Fixed user_profiles eager load (user_id primary key, not id)
- Bumped /api/art/{id}/similar rate limit to 300/min
- Removed decorative heart icons from tag pills
- Moved ReactionBar under artwork description

app/Support/AvatarUrl.php

@@ -33,7 +33,7 @@ class AvatarUrl
     {
         $base = rtrim((string) config('cdn.avatar_url', 'https://files.skinbase.org'), '/');
 
-        return sprintf('%s/avatars/default.webp', $base);
+        return sprintf('%s/default/avatar_default.webp', $base);
     }
 
     private static function resolveHash(int $userId): ?string