feat(车辆认证): 添加认证待付款状态支持

在车辆认证流程中新增'认证待付款'状态(状态码2)，并更新相关API文档和前端状态映射
同时修改车辆列表查询接口，包含新状态在筛选条件中

 /*
  * @Date: 2025-07-09 14:58:51
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-07-29 10:49:36
+ * @LastEditTime: 2025-08-01 14:58:39
  * @FilePath: /jgdl/src/api/car.js
  * @Description: 车辆相关API接口
  */
@@ -84,7 +84,7 @@ export const getRecommendVehicleAPI = (params) => fn(fetch.get(Api.RECOMMEND_VEH
  * @param school_id 学校ID
  * @param brand 品牌
  * @param manufacture_year 出厂年份
- * @param verification_status 认证状态（1=不认证, 3=认证待审核, 5=已认证, 7=认证失败）
+ * @param verification_status 认证状态（1=不认证, 2=认证待付款, 3=认证待审核, 5=已认证, 7=认证失败）
  * @param keyword 搜索关键字（品牌/型号/描述）
  * @param page 页码
  * @param limit 每页数量

 <!--
  * @Date: 2022-09-19 14:11:06
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-07-18 15:20:04
+ * @LastEditTime: 2025-08-01 14:59:44
  * @FilePath: /jgdl/src/pages/myAuthCar/index.vue
  * @Description: 我的认证车页面
 -->
@@ -157,6 +157,7 @@ const scrollStyle = computed(() => {
 const getVerificationStatusText = (status) => {
     const statusMap = {
         1: '未认证',
+        2: '认证待付款',
         3: '认证待审核',
         5: '已认证',
         7: '认证失败'
@@ -185,7 +186,7 @@ const initData = async () => {
     loading.value = true
     try {
         const response = await getMyListingVehicleAPI({
-            verification_status: [3, 5, 7],
+            verification_status: [2, 3, 5, 7],
             page: 0,
             limit: pageSize.value
         })
@@ -216,7 +217,7 @@ const loadMore = async () => {
     try {
         const nextPage = currentPage.value + 1
         const response = await getMyListingVehicleAPI({
-            verification_status: [3, 5, 7],
+            verification_status: [2, 3, 5, 7],
             page: nextPage,
             limit: pageSize.value
         })