feat(trending): switch trending endpoints to Ranking V2 ranking_score\n\n- discoverTrending() now sorts by ranking_score:desc + engagement_velocity:desc\n- HomepageService::getTrending() now sorts by ranking_score:desc + velocity\n- DB fallback joins artwork_stats for ranking_score sort\n- Both trending endpoints filter to last 30 days (spec §6)\n- Add created_at to Meilisearch filterableAttributes for date filtering\n- Synced index settings"

app/Services/HomepageService.php

@@ -133,20 +133,22 @@ final class HomepageService
     }
 
     /**
-     * Trending: up to 12 artworks sorted by pre-computed trending_score_7d.
+     * Trending: up to 12 artworks sorted by Ranking V2 `ranking_score`.
      *
-     * Uses Meilisearch sorted by the pre-computed score (updated every 30 min).
-     * Falls back to DB ORDER BY trending_score_7d if Meilisearch is unavailable.
-     * Spec: no heavy joins in the hot path.
+     * Uses Meilisearch sorted by the V2 score (updated every 30 min).
+     * Falls back to DB ORDER BY ranking_score if Meilisearch is unavailable.
+     * Spec §6: ranking_score, last 30 days, highlight high-velocity artworks.
      */
     public function getTrending(int $limit = 10): array
     {
-        return Cache::remember("homepage.trending.{$limit}", self::CACHE_TTL, function () use ($limit): array {
+        $cutoff = now()->subDays(30)->toDateString();
+
+        return Cache::remember("homepage.trending.{$limit}", self::CACHE_TTL, function () use ($limit, $cutoff): array {
             try {
                 $results = Artwork::search('')
                     ->options([
-                        'filter' => 'is_public = true AND is_approved = true',
-                        'sort'   => ['trending_score_7d:desc', 'trending_score_24h:desc', 'views:desc'],
+                        'filter' => 'is_public = true AND is_approved = true AND created_at >= "' . $cutoff . '"',
+                        'sort'   => ['ranking_score:desc', 'engagement_velocity:desc', 'views:desc'],
                     ])
                     ->paginate($limit, 'page', 1);
 
@@ -172,15 +174,18 @@ final class HomepageService
 
     /**
      * DB-only fallback for trending (Meilisearch unavailable).
-     * Uses pre-computed trending_score_7d column — no correlated subqueries.
+     * Joins artwork_stats to sort by V2 ranking_score.
      */
     private function getTrendingFromDb(int $limit): array
     {
         return Artwork::public()
             ->published()
             ->with(['user:id,name,username', 'user.profile:user_id,avatar_hash'])
-            ->orderByDesc('trending_score_7d')
-            ->orderByDesc('trending_score_24h')
+            ->leftJoin('artwork_stats', 'artwork_stats.artwork_id', '=', 'artworks.id')
+            ->select('artworks.*')
+            ->where('artworks.published_at', '>=', now()->subDays(30))
+            ->orderByDesc('artwork_stats.ranking_score')
+            ->orderByDesc('artwork_stats.engagement_velocity')
             ->limit($limit)
             ->get()
             ->map(fn ($a) => $this->serializeArtwork($a))