fix(teacher): 修复任务主页条件渲染和打卡类型处理

添加任务类型判断逻辑，修复日期和附件类型的条件渲染
防止打卡类型任务跳转作业记录页

 <!--
  * @Date: 2025-11-19 21:00:00
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-12-05 22:31:03
+ * @LastEditTime: 2025-12-10 11:32:08
  * @FilePath: /mlaj/src/views/teacher/taskHomePage.vue
  * @Description: 教师端作业主页（头部介绍、统计、日历与学生完成情况；数据Mock）
 -->
@@ -19,9 +19,10 @@
             <div class="details text-sm text-gray-600">
                 <div class="detailItem">周期：{{ task_details.cycle }}</div>
                 <div class="detailItem">频次：{{ task_details.frequency }}</div>
-                <div class="detailItem">开始时间：{{ task_details.begin_date }}</div>
-                <div class="detailItem">截止时间：{{ task_details.end_date }}</div>
-                <div class="detailItem">附件类型：{{ task_details.attachment_type }}</div>
+                <div v-if="task_details.begin_date" class="detailItem">开始时间：{{ task_details.begin_date }}</div>
+                <div v-if="task_details.end_date" class="detailItem">截止时间：{{ task_details.end_date }}</div>
+                <div v-if="task_details.attachment_type.length" class="detailItem">附件类型：{{ task_details.attachment_type }}</div>
+                <div v-if="task_type === 'checkin'" class="detailItem">类型：打卡签到</div>
             </div>
         </div>
 
@@ -90,7 +91,7 @@
                 <div class="text-base font-semibold text-gray-800">完成情况（{{ completed_count }}/{{ user_list.length }}）
                 </div>
                 <!-- <div class="text-xs text-gray-500">当前日期：{{ current_date_text }}</div> -->
-                <div class="text-xs text-gray-500">点击查看作业记录</div>
+                <div v-if="task_type !== 'checkin'" class="text-xs text-gray-500">点击查看作业记录</div>
             </div>
             <div class="grid grid-cols-5 gap-3 StudentsGrid">
                 <div v-for="(stu, idx) in students_status" :key="stu.id"
@@ -223,6 +224,7 @@ const upload_text = computed(() => `${upload_count.value}%`)
 const today = new Date()
 const selected_date = ref(format_date(today))
 const user_list = ref([])
+const task_type = ref('')
 
 /**
  * 获取作业详情和学生完成情况
@@ -237,6 +239,7 @@ async function fetchData() {
         if (res.code) {
             task_title.value = res.data.title
             task_intro.value = res.data.note
+            task_type.value = res.data.task_type || ''
 
             // 格式化周期显示
             const cycleMap = {
@@ -265,8 +268,8 @@ async function fetchData() {
             task_details.value = {
                 cycle: cycleText,
                 frequency: `每周期${res.data.frequency || 1}次`,
-                begin_date: dayjs(res.data.begin_date).format('YYYY-MM-DD'),
-                end_date: dayjs(res.data.end_date).format('YYYY-MM-DD'),
+                begin_date: res.data.begin_date ? dayjs(res.data.begin_date).format('YYYY-MM-DD') : '',
+                end_date: res.data.end_date ? dayjs(res.data.end_date).format('YYYY-MM-DD') : '',
                 // time_range: `${res.data.begin_date || '00:00'} ~ ${res.data.end_date || '23:59'}`, // 注意：API返回的begin_date/end_date可能是日期也可能是时间，这里暂且直接展示
                 attachment_type: attachmentText
             }
@@ -375,6 +378,9 @@ const current_date_text = computed(() => selected_date.value)
  * @returns {void}
  */
 function go_student_record(stu) {
+    if (task_type.value === 'checkin') {
+        return
+    }
     // 跳转到固定ID的作业记录页面，当前版本不使用传入ID
     $router.push({ name: 'StudentRecord', query: { created_by: stu.id, date: selected_date.value } })
 }