fix(frontend): 修复UI改进分支中的关键问题

- 修复RedeemView订阅刷新失败导致流程中断的问题
  将订阅刷新隔离到独立try/catch，失败时仅显示警告
- 修复DataTable resize事件监听器泄漏问题
  确保添加和移除使用同一个回调引用
- 修复订阅状态缓存导致强制刷新失效的问题
  force=true时绕过activePromise缓存，clear()清空缓存
- 修复图表主题切换后颜色不更新的问题
  添加图表ref并在主题切换时调用update()方法

frontend/src/i18n/locales/en.ts

@@ -410,7 +410,8 @@ export default {
     subscriptionDays: '{days} days',
     days: ' days',
     codeRedeemSuccess: 'Code redeemed successfully!',
-    failedToRedeem: 'Failed to redeem code. Please check the code and try again.'
+    failedToRedeem: 'Failed to redeem code. Please check the code and try again.',
+    subscriptionRefreshFailed: 'Redeemed successfully, but failed to refresh subscription status.'
   },
 
   // Profile

frontend/src/i18n/locales/zh.ts

@@ -406,7 +406,8 @@ export default {
     subscriptionDays: '{days} 天',
     days: '天',
     codeRedeemSuccess: '兑换成功！',
-    failedToRedeem: '兑换失败，请检查兑换码后重试。'
+    failedToRedeem: '兑换失败，请检查兑换码后重试。',
+    subscriptionRefreshFailed: '兑换成功，但订阅状态刷新失败。'
   },
 
   // Profile