feat: 支持批量重置状态和批量刷新令牌

- 提取 refreshSingleAccount 私有方法复用单账号刷新逻辑
- 新增 BatchClearError handler (POST /admin/accounts/batch-clear-error)
- 新增 BatchRefresh handler (POST /admin/accounts/batch-refresh)
- 前端 AccountBulkActionsBar 添加批量重置状态/刷新令牌按钮
- AccountsView 添加 handler 支持 partial success 反馈
- i18n 中英文补充批量操作相关翻译

frontend/src/i18n/locales/en.ts

@@ -1836,7 +1836,12 @@ export default {
         edit: 'Bulk Edit',
         delete: 'Bulk Delete',
         enableScheduling: 'Enable Scheduling',
-        disableScheduling: 'Disable Scheduling'
+        disableScheduling: 'Disable Scheduling',
+        resetStatus: 'Reset Status',
+        refreshToken: 'Refresh Token',
+        resetStatusSuccess: 'Successfully reset {count} account(s) status',
+        refreshTokenSuccess: 'Successfully refreshed {count} account(s) token',
+        partialSuccess: 'Partially completed: {success} succeeded, {failed} failed'
       },
       bulkEdit: {
         title: 'Bulk Edit Accounts',