updates

src/pages/simulate.vue

@@ -255,8 +255,8 @@ async function openMajorModal(school: MajorItem) {
   showModal.value = true
   modalLoading.value = true
   modalMajors.value = []
-  // 重置弹窗内的状态
-  selectedMajorCodes.value = []
+  // 回显已选专业：从我的志愿列表中获取所有已选的标识
+  selectedMajorCodes.value = myVolunteers.value.map(v => `${v.schoolCode}_${v.majorCode}_${v.enrollmentCode}`)
   showSaveConfirm.value = false
 
   try {