fix: frames

lib/feature/shop/domain/entities/frame.dart

@@ -4,6 +4,8 @@ class AvatarFrame {
   final String title;
   final int priceCoins;
   final bool vip;
+  final String c1; // رنگِ گرادیان (hex بدونِ #)؛ خالی ⇒ قابِ رتبه
+  final String c2;
   final bool owned;
 
   const AvatarFrame({
@@ -11,6 +13,8 @@ class AvatarFrame {
     required this.title,
     required this.priceCoins,
     required this.vip,
+    required this.c1,
+    required this.c2,
     required this.owned,
   });
 
@@ -19,6 +23,8 @@ class AvatarFrame {
         title: (j['title'] ?? '') as String,
         priceCoins: (j['price_coins'] ?? 0) as int,
         vip: (j['vip'] ?? false) as bool,
+        c1: (j['c1'] ?? '') as String,
+        c2: (j['c2'] ?? '') as String,
         owned: (j['owned'] ?? false) as bool,
       );
 }