Studio: make grid checkbox rectangular and commit table changes

app/Models/Artwork.php

@@ -86,7 +86,7 @@ class Artwork extends Model
 	 */
 	public function getThumbAttribute(): string
 	{
-		return $this->thumbUrl('md') ?? '/gfx/sb_join.jpg';
+		return $this->thumbUrl('md') ?? 'https://files.skinbase.org/default/missing_md.webp';
 	}
 
 	/**
@@ -261,6 +261,8 @@ class Artwork extends Model
 			'engagement_velocity'   => (float) ($stat?->engagement_velocity    ?? 0),
 			'shares_count'          => (int)   ($stat?->shares_count           ?? 0),
 			'comments_count'        => (int)   ($stat?->comments_count         ?? 0),
+			// ── Rising / Heat fields ────────────────────────────────────────────────────
+			'heat_score'            => (float) ($stat?->heat_score             ?? 0),
 			'awards' => [
 				'gold'   => $awardStat?->gold_count   ?? 0,
 				'silver' => $awardStat?->silver_count ?? 0,