feat(i18n): add translations for pricing terms in English

web/src/components/topup/RechargeCard.jsx

@@ -353,11 +353,12 @@ const RechargeCard = ({
                           >
                             <div style={{ textAlign: 'center' }}>
                               <Typography.Title heading={6} style={{ margin: '0 0 8px 0' }}>
-                                {formatLargeNumber(preset.value)} {t('美元额度')}
+                                <Coins size={18} />
+                                {formatLargeNumber(preset.value)}
                                 {hasDiscount && (
                                    <Tag style={{ marginLeft: 4 }} color="green">
                                    {t('折').includes('off') ?
-                                     ((1 - discount) * 100).toFixed(1) :
+                                     ((1 - parseFloat(discount)) * 100).toFixed(1) :
                                      (discount * 10).toFixed(1)}{t('折')}
                                  </Tag>
                                 )}

web/src/i18n/locales/en.json

@@ -2080,5 +2080,9 @@
   "官方": "Official",
   "模型社区需要大家的共同维护，如发现数据有误或想贡献新的模型数据，请访问：": "The model community needs everyone's contribution. If you find incorrect data or want to contribute new models, please visit:",
   "是": "Yes",
-  "否": "No"
+  "否": "No",
+  "原价": "Original price",
+  "优惠": "Discount",
+  "折": "% off",
+  "节省": "Save"
 }