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/Services/UserStatsService.php

@@ -253,7 +253,7 @@ final class UserStatsService
         DB::table('user_statistics')
             ->where('user_id', $userId)
             ->update([
-                $column      => DB::raw("MAX(0, COALESCE({$column}, 0) + {$by})"),
+                $column      => DB::raw("GREATEST(0, COALESCE({$column}, 0) + {$by})"),
                 'updated_at' => now(),
             ]);
     }
@@ -264,7 +264,7 @@ final class UserStatsService
             ->where('user_id', $userId)
             ->where($column, '>', 0)
             ->update([
-                $column      => DB::raw("MAX(0, COALESCE({$column}, 0) - {$by})"),
+                $column      => DB::raw("GREATEST(0, COALESCE({$column}, 0) - {$by})"),
                 'updated_at' => now(),
             ]);
     }