通道配对，预检测界面

frontend/src/views/home/components/preTest.vue

@@ -68,7 +68,7 @@
 </template>
 <script lang="tsx" setup name="preTest">
 import {ElMessage, ElMessageBox} from "element-plus";
-import {defineExpose, toRef} from 'vue';
+import {defineExpose, ref, toRef, watch} from 'vue';
 
 const step1InitLog = ref([
   {