feat(i18n): 剩余15页全量接入中英(登录/注册/扫码/绑定/佩戴/扫描/治疗/订阅/帮助等)

- 3 个并行 agent 各管 5 页,互不重叠命名空间
- 全 App 18 页均 i18n.bind,22 命名空间/400 键中英对齐
- 动态文案(时长/天数/价格/区域)JS 内 i18n.t 计算;区域标签复用 common.regions

miniprogram/i18n/locales/bindSuccess.js

@@ -1,5 +1,23 @@
 // Strings for the bindSuccess page. Fill zh/en with identical key structure.
 module.exports = {
-  zh: {},
-  en: {}
+  zh: {
+    title: '绑定成功',
+    subtitle: '设备已成功绑定',
+    successTitle: '绑定成功！',
+    freeModeOpen: '智能模式已开放',
+    trialGranted: '恭喜获得{days}天智能模式试用',
+    trialSub: '体验结束后可订阅继续使用',
+    startUsing: '开始使用',
+    goHome: '返回首页'
+  },
+  en: {
+    title: 'Bound Successfully',
+    subtitle: 'Device bound successfully',
+    successTitle: 'Bound Successfully!',
+    freeModeOpen: 'Smart mode unlocked',
+    trialGranted: 'You got a {days}-day Smart mode trial',
+    trialSub: 'Subscribe to keep using it after the trial ends',
+    startUsing: 'Get Started',
+    goHome: 'Back to Home'
+  }
 }