更新管理后台布局，优化菜单项标签，新增支付配置项。同时，调整API响应字段命名，确保一致性，提升代码可读性和维护性。

miniprogram/pages/my/my.js

@@ -157,12 +157,12 @@ Page({
           id: item.id,
           amount: (item.amount || 0).toFixed(2),
           package: item.package,
-          created_at: item.created_at ? this.formatDateMy(item.created_at) : '--'
+          createdAt: (item.createdAt ?? item.created_at) ? this.formatDateMy(item.createdAt ?? item.created_at) : '--'
         }))
         this.setData({
           pendingConfirmList: list,
-          withdrawMchId: res.data.mch_id || '',
-          withdrawAppId: res.data.app_id || ''
+          withdrawMchId: res.data.mchId ?? res.data.mch_id ?? '',
+          withdrawAppId: res.data.appId ?? res.data.app_id ?? ''
         })
       } else {
         this.setData({ pendingConfirmList: [], withdrawMchId: '', withdrawAppId: '' })