messages implemented

app/Models/Artwork.php

@@ -174,6 +174,20 @@ class Artwork extends Model
 		return $this->hasMany(ArtworkFeature::class, 'artwork_id');
 	}
 
+	/** All favourite pivot rows for this artwork. */
+	public function favourites(): HasMany
+	{
+		return $this->hasMany(ArtworkFavourite::class, 'artwork_id');
+	}
+
+	/** Users who have favourited this artwork (many-to-many shortcut). */
+	public function favouritedBy(): BelongsToMany
+	{
+		return $this->belongsToMany(User::class, 'artwork_favourites', 'artwork_id', 'user_id')
+			->withPivot('legacy_id')
+			->withTimestamps();
+	}
+
 	public function awards(): HasMany
 	{
 		return $this->hasMany(ArtworkAward::class);