bug fixes

lib/domain/entities/tariff.dart

@@ -2,7 +2,6 @@ class Tariff {
   final int id;
   final String title;
   final String description;
-  final String descriptionJson;
   final bool isActive;
   final String currency;
   final double holdPrice;      // Старт / бронь
@@ -16,7 +15,6 @@ class Tariff {
     required this.id,
     required this.title,
     required this.description,
-    required this.descriptionJson,
     required this.isActive,
     required this.currency,
     required this.holdPrice,
@@ -35,7 +33,6 @@ class Tariff {
       id: json['id'] ?? 0,
       title: json['title'] ?? 'Unknown',
       description: json['description'] ?? '',
-      descriptionJson: json['descriptionJson'] ?? '',
       isActive: json['isActive'] ?? false,
       currency: currency['currency'] ?? 'BYN',
       holdPrice: (planPrice['hold'] as num?)?.toDouble() ?? 0.0,