feat: refactor code

lib/feature/game/domain/entities/table_entities.dart

@@ -0,0 +1,42 @@
+/// نوع میز (از catalog.table_tiers در GET /api/shop).
+class TableTier {
+  final String id;
+  final String title;
+  final int hands;
+  final int entry;
+  final int prize;
+  final int xp;
+  final int trophy;
+
+  const TableTier({
+    required this.id,
+    required this.title,
+    required this.hands,
+    required this.entry,
+    required this.prize,
+    required this.xp,
+    required this.trophy,
+  });
+
+  factory TableTier.fromJson(Map<String, dynamic> j) => TableTier(
+        id: j['id'] as String,
+        title: j['title'] as String,
+        hands: (j['hands'] ?? 0) as int,
+        entry: (j['entry'] ?? 0) as int,
+        prize: (j['prize'] ?? 0) as int,
+        xp: (j['xp'] ?? 0) as int,
+        trophy: (j['trophy'] ?? 0) as int,
+      );
+}
+
+/// اطلاعات سهمیه‌ی میزهای خصوصی (GET /api/tables/info).
+class TablesInfo {
+  final int remaining;
+  final bool unlimited;
+  const TablesInfo(this.remaining, this.unlimited);
+
+  factory TablesInfo.fromJson(Map<String, dynamic> j) => TablesInfo(
+        (j['remaining'] ?? 0) as int,
+        (j['unlimited'] ?? false) as bool,
+      );
+}