feat: bugfix

lib/app/modules/kr_purchase_membership/controllers/kr_purchase_membership_controller.dart

@@ -621,7 +621,7 @@ class KRPurchaseMembershipController extends GetxController {
         return '';
       }
       // 计算折扣百分比（例如：97% 显示为 -3%）
-      final discountPercent = 100 - discount.kr_discount;
+      final discountPercent = (100 - discount.kr_discount).ceil();
       return '${discountPercent}%';
     }
     return '';

lib/app/modules/kr_purchase_membership/views/kr_purchase_membership_view.dart

@@ -336,7 +336,7 @@ class KRPurchaseMembershipView extends GetView<KRPurchaseMembershipController>
                         ),
                         child: Center(
                           child: Text(
-                            '${controller.kr_getDiscountText(plan, discountIndex!)} OFF',
+                            '${controller.kr_getDiscountText(plan, discountIndex!)} off',
                             style: TextStyle(
                               color: Colors.black, // 白色文字更清晰
                               fontSize: 14,