refactor: 重构微信小程序从云开发迁移至后端API

将云数据库操作改为调用后端API接口
提取登录失败处理逻辑到单独方法
添加环境配置和API请求工具类
移除云开发相关配置

pages/appointment/appointment.js

@@ -1,6 +1,6 @@
 // appointment.js
 const { formatDate } = require('../../utils/util')
-const { appointmentDB } = require('../../utils/cloud')
+const { appointmentDB } = require('../../utils/api')
 const app = getApp()
 
 Page({
@@ -109,8 +109,9 @@ Page({
     this.setData({ submitting: true })
 
     try {
-      // 写入云数据库
-      await appointmentDB.create(this.data.form)
+      // 通过后端API创建预约
+      const openid = app.globalData.userInfo.openid
+      await appointmentDB.create({ ...this.data.form, openid })
 
       this.setData({ submitting: false })
 

pages/index/index.js

@@ -1,5 +1,5 @@
 // index.js
-const { appointmentDB, formatRecord } = require('../../utils/cloud')
+const { appointmentDB, formatRecord } = require('../../utils/api')
 const app = getApp()
 
 Page({

pages/records/records.js

@@ -1,5 +1,5 @@
 // records.js
-const { appointmentDB, formatRecord } = require('../../utils/cloud')
+const { appointmentDB, formatRecord } = require('../../utils/api')
 const app = getApp()
 
 Page({