feat: add detail image media and play list

app/Models/Media.php

@@ -13,6 +13,7 @@ class Media extends Model
   protected $fillable = [
         'user_id',
         'image_id',
+        'detail_image_id',
         'title',
         'caption',
         'type',
@@ -42,6 +43,12 @@ public function image()
         return $this->belongsTo(Image::class);
     }
 
+    // Image shown on the detail (show-by-id) screen; image() is the list thumbnail.
+    public function detailImage()
+    {
+        return $this->belongsTo(Image::class, 'detail_image_id');
+    }
+
     public function categories()
     {
         return $this->belongsToMany(Category::class, 'category_media');

app/Models/MusicPlaylist.php

@@ -15,7 +15,7 @@ class MusicPlaylist extends Model
     protected $table = 'music_playlists';
     
     protected $fillable = [
-        'name', 'slug', 'description', 'image_id', 'order', 'is_active'
+        'name', 'slug', 'description', 'image_id', 'detail_image_id', 'order', 'is_active'
     ];
     
     protected $casts = [
@@ -54,6 +54,12 @@ public function image(): BelongsTo
     {
         return $this->belongsTo(Image::class);
     }
+
+    // Image shown on the detail (show-by-id) screen; image() is the list thumbnail.
+    public function detailImage(): BelongsTo
+    {
+        return $this->belongsTo(Image::class, 'detail_image_id');
+    }
     
     public function getActiveMusicsAttribute()
     {