docs(volunteerLogin): 更新文件描述和添加注释

更新配置文件描述为"义工登录配置"
在登录逻辑中添加TODO注释说明模拟功能

 /*
  * @Date: 2026-01-07 17:41:31
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2026-01-07 18:04:52
+ * @LastEditTime: 2026-01-13 22:29:57
  * @FilePath: /xyxBooking-weapp/src/pages/volunteerLogin/index.config.js
- * @Description: 文件描述
+ * @Description: 义工登录配置
  */
 export default {
   navigationBarTitleText: ''

 <!--
  * @Date: 2026-01-08 13:01:56
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2026-01-08 13:02:27
+ * @LastEditTime: 2026-01-13 22:11:30
  * @FilePath: /xyxBooking-weapp/src/pages/volunteerLogin/index.vue
  * @Description: 义工登录页面
 -->
@@ -73,6 +73,7 @@ const handleLogin = async () => {
         // 更新 store 中的用户信息 (isVolunteer 会自动通过 getter 更新)
         store.changeUserInfo(userRes.data)
 
+        // TODO: 这是模拟功能, 检查是否为义工账号
         if (store.isVolunteer) {
             Taro.showToast({ title: '登录成功', icon: 'success' })
             setTimeout(() => {