feat: Ranking Engine V2 — intelligent scoring with shares, authority, decay & velocity\n\n- Add ArtworkRankingService with V2 formula:\n ranking_score = (base × authority × decay) + velocity_boost\n Base: views×0.2 + downloads×1.5 + favourites×2.5 + comments×3.0 + shares×4.0\n Authority: 1 + (log10(1+followers) + fav_received/1000) × 0.05\n Decay: 1 / (1 + hours/48)\n Velocity: 24h signals × velocity_weights × 0.5\n\n- Add nova:recalculate-rankings command (--chunk, --sync-rank-scores, --skip-index)\n- Add migration: ranking_score, engagement_velocity, shares/comments counts to artwork_stats\n- Upgrade RankingService.computeScores() with shares + comments + velocity\n- Update Meilisearch sortableAttributes: ranking_score, shares_count, engagement_velocity, comments_count\n- Update toSearchableArray() to expose V2 fields\n- Schedule every 30 min with overlap protection\n- Verified: 49733 artworks scored successfully"

app/Models/Artwork.php

@@ -256,6 +256,11 @@ class Artwork extends Model
 			'favorites_count'       => (int)   ($stat?->favorites         ?? 0),
 			'awards_received_count' => (int)   ($awardStat?->score_total  ?? 0),
 			'downloads_count'       => (int)   ($stat?->downloads         ?? 0),
+			// ── Ranking V2 fields ───────────────────────────────────────────────
+			'ranking_score'         => (float) ($stat?->ranking_score          ?? 0),
+			'engagement_velocity'   => (float) ($stat?->engagement_velocity    ?? 0),
+			'shares_count'          => (int)   ($stat?->shares_count           ?? 0),
+			'comments_count'        => (int)   ($stat?->comments_count         ?? 0),
 			'awards' => [
 				'gold'   => $awardStat?->gold_count   ?? 0,
 				'silver' => $awardStat?->silver_count ?? 0,