学年学期页面新增“设为当前”“归档”“撤销归档”，当前学期不能归档、删除或直接取消；已归档学期需先撤销才能重新设为当前。[BaseDataController.cs (line 286)](/E:/jiaowu/src/Jiaowu.Api/Controllers/BaseDataController.cs:286)

切换后，其他学期自动变为历史态；已归档学期进一步弱化。所有主要学期选择器统一默认当前，并显示“当前 / 历史 / 已归档”。[academicTerms.ts (line 1)](/E:/jiaowu/web/src/utils/academicTerms.ts:1)
桌面使用分层表格，390px 手机端改为独立学期卡片，操作不会再挤压表格。[BaseDataView.vue (line 211)](/E:/jiaowu/web/src/views/BaseDataView.vue:211)
归档定义为“历史显示状态”，不是成绩冻结：补考成绩仍可录入并回写，已发布成绩仍可走成绩更正审批。
已加入 SQLite 开发迁移、MySQL 正式迁移和切换/归档/撤销测试。[20260726143000_AcademicTermArchiving.cs (line 1)](/E:/jiaowu/src/Jiaowu.Api/Infrastructure/Persistence/Migrations/MySql/20260726143000_AcademicTermArchiving.cs:1)

web/src/views/BaseDataView.vue

@@ -5,9 +5,19 @@ import { useRoute } from 'vue-router'
 import http, { apiErrorMessage } from '../api/http'
 import { downloadApiFile, importExcel } from '../api/excel'
 import { useAuthStore } from '../stores/auth'
+import { academicTermRowClass } from '../utils/academicTerms'
 
 type Kind = 'campuses' | 'colleges' | 'majors' | 'classes' | 'terms' | 'buildings' | 'classrooms' | 'course-categories'
-interface Row { id: string; code: string; name: string; isEnabled: boolean; [key: string]: unknown }
+interface Row {
+  id: string
+  code: string
+  name: string
+  isEnabled: boolean
+  academicYear?: string
+  isCurrent?: boolean
+  isArchived?: boolean
+  [key: string]: unknown
+}
 
 const allTabs: { key: Kind; label: string; hint: string }[] = [
   { key: 'campuses', label: '校区', hint: '学校的物理校区' },
@@ -210,6 +220,47 @@ async function remove(row: any) {
   }
 }
 
+function termTableRowClass({ row }: { row: any }) {
+  return active.value === 'terms' ? academicTermRowClass(row) : ''
+}
+
+async function setCurrentTerm(row: any) {
+  try {
+    await ElMessageBox.confirm(
+      `将“${row.name}”切换为当前学期？其他学期会自动转为历史显示，但不会自动归档，也不会冻结成绩和补考。`,
+      '切换当前学期',
+      { type: 'warning', confirmButtonText: '切换为当前', cancelButtonText: '取消' },
+    )
+    await http.post(`/base-data/terms/${row.id}/set-current`)
+    ElMessage.success(`当前学期已切换为“${row.name}”`)
+    await load()
+  } catch (error: any) {
+    if (error !== 'cancel' && error !== 'close') ElMessage.error(apiErrorMessage(error))
+  }
+}
+
+async function toggleTermArchive(row: any) {
+  const restoring = row.isArchived
+  try {
+    await ElMessageBox.confirm(
+      restoring
+        ? `撤销“${row.name}”的归档状态？撤销后仍作为历史学期显示，可再次设为当前。`
+        : `归档“${row.name}”？归档只降低历史数据的显示优先级，不会冻结成绩更正或补考成绩录入。`,
+      restoring ? '撤销学期归档' : '归档学期',
+      {
+        type: restoring ? 'info' : 'warning',
+        confirmButtonText: restoring ? '撤销归档' : '确认归档',
+        cancelButtonText: '取消',
+      },
+    )
+    await http.post(`/base-data/terms/${row.id}/${restoring ? 'unarchive' : 'archive'}`)
+    ElMessage.success(restoring ? '已撤销归档' : '学期已归档')
+    await load()
+  } catch (error: any) {
+    if (error !== 'cancel' && error !== 'close') ElMessage.error(apiErrorMessage(error))
+  }
+}
+
 onMounted(async () => {
   await Promise.all([load(), loadReferences()])
 })
@@ -276,7 +327,65 @@ watch(
         <span>共 {{ filteredRows.length }} 条</span>
       </div>
 
-      <el-table v-loading="loading" :data="filteredRows" class="data-table">
+      <el-alert
+        v-if="active === 'terms'"
+        class="term-policy-note"
+        type="info"
+        :closable="false"
+        show-icon
+        title="切换当前学期只改变默认工作学期；归档需手动执行，归档后仍可处理补考与成绩更正。"
+      />
+
+      <div v-if="active === 'terms'" class="term-mobile-list">
+        <article
+          v-for="row in filteredRows"
+          :key="row.id"
+          :class="academicTermRowClass(row)"
+        >
+          <header>
+            <div>
+              <span>{{ row.code }}</span>
+              <h3>{{ row.name }}</h3>
+              <p>{{ row.academicYear }}</p>
+            </div>
+            <el-tag v-if="row.isCurrent" type="success">当前</el-tag>
+            <el-tag v-else-if="row.isArchived" type="info">已归档</el-tag>
+            <span v-else class="term-history-label">历史学期</span>
+          </header>
+          <footer v-if="canManage">
+            <el-button
+              v-if="!row.isCurrent && !row.isArchived"
+              size="small"
+              type="success"
+              plain
+              @click="setCurrentTerm(row)"
+            >设为当前</el-button>
+            <el-button
+              v-if="!row.isCurrent"
+              size="small"
+              :type="row.isArchived ? 'primary' : 'warning'"
+              plain
+              @click="toggleTermArchive(row)"
+            >{{ row.isArchived ? '撤销归档' : '归档' }}</el-button>
+            <el-button size="small" @click="openEdit(row)">编辑</el-button>
+            <el-button
+              v-if="!row.isCurrent"
+              size="small"
+              type="danger"
+              plain
+              @click="remove(row)"
+            >删除</el-button>
+          </footer>
+        </article>
+      </div>
+
+      <el-table
+        v-loading="loading"
+        :data="filteredRows"
+        :row-class-name="termTableRowClass"
+        class="data-table"
+        :class="{ 'term-desktop-table': active === 'terms' }"
+      >
         <el-table-column prop="code" label="编码" min-width="130" />
         <el-table-column prop="name" label="名称" min-width="180" />
         <el-table-column v-if="active === 'colleges'" prop="campusName" label="所属校区" min-width="140" />
@@ -288,8 +397,12 @@ watch(
           <template #default="{ row }">{{ row.counselorName || '未分配' }}</template>
         </el-table-column>
         <el-table-column v-if="active === 'terms'" prop="academicYear" label="学年" width="120" />
-        <el-table-column v-if="active === 'terms'" label="当前学期" width="100">
-          <template #default="{ row }"><el-tag v-if="row.isCurrent" type="success">当前</el-tag><span v-else>—</span></template>
+        <el-table-column v-if="active === 'terms'" label="运行状态" width="120">
+          <template #default="{ row }">
+            <el-tag v-if="row.isCurrent" type="success">当前</el-tag>
+            <el-tag v-else-if="row.isArchived" type="info">已归档</el-tag>
+            <span v-else>历史学期</span>
+          </template>
         </el-table-column>
         <el-table-column v-if="active === 'buildings'" prop="campusName" label="所属校区" min-width="140" />
         <el-table-column v-if="active === 'classrooms'" prop="buildingName" label="教学楼" min-width="130" />
@@ -299,10 +412,34 @@ watch(
             <span class="table-status" :class="{ off: !row.isEnabled }">{{ row.isEnabled ? '启用' : '停用' }}</span>
           </template>
         </el-table-column>
-        <el-table-column v-if="canManage" label="操作" width="150" fixed="right">
+        <el-table-column
+          v-if="canManage"
+          label="操作"
+          :width="active === 'terms' ? 280 : 150"
+          fixed="right"
+        >
           <template #default="{ row }">
+            <template v-if="active === 'terms'">
+              <el-button
+                v-if="!row.isCurrent && !row.isArchived"
+                link
+                type="success"
+                @click="setCurrentTerm(row)"
+              >设为当前</el-button>
+              <el-button
+                v-if="!row.isCurrent"
+                link
+                :type="row.isArchived ? 'primary' : 'warning'"
+                @click="toggleTermArchive(row)"
+              >{{ row.isArchived ? '撤销归档' : '归档' }}</el-button>
+            </template>
             <el-button link type="primary" @click="openEdit(row)">编辑</el-button>
-            <el-button link type="danger" @click="remove(row)">删除</el-button>
+            <el-button
+              v-if="active !== 'terms' || !row.isCurrent"
+              link
+              type="danger"
+              @click="remove(row)"
+            >删除</el-button>
           </template>
         </el-table-column>
         <template #empty><el-empty description="暂无数据，点击右上角开始新增" /></template>
@@ -366,7 +503,12 @@ watch(
             <el-form-item label="开始日期"><el-date-picker v-model="form.startDate" value-format="YYYY-MM-DD" /></el-form-item>
             <el-form-item label="结束日期"><el-date-picker v-model="form.endDate" value-format="YYYY-MM-DD" /></el-form-item>
           </div>
-          <el-form-item><el-checkbox v-model="form.isCurrent">设为当前学期</el-checkbox></el-form-item>
+          <el-form-item>
+            <el-checkbox v-model="form.isCurrent" :disabled="form.isArchived">
+              设为当前学期
+            </el-checkbox>
+            <span v-if="form.isArchived" class="field-help">已归档学期需先撤销归档。</span>
+          </el-form-item>
         </template>
         <el-form-item v-if="active === 'classrooms'" label="所属教学楼" required>
           <el-select v-model="form.buildingId">

web/src/views/CourseAdjustmentsView.vue

@@ -3,6 +3,7 @@ import { computed, onMounted, reactive, ref } from 'vue'
 import { Bell, Check, Plus, Refresh } from '@element-plus/icons-vue'
 import http, { apiErrorMessage } from '../api/http'
 import { useAuthStore } from '../stores/auth'
+import { academicTermLabel, academicTermOptionClass, defaultAcademicTermId } from '../utils/academicTerms'
 
 const auth = useAuthStore()
 const isManager = computed(() =>
@@ -172,7 +173,7 @@ onMounted(async () => {
     ])
     terms.value = termRes.data
     tasks.value = taskRes.data.items
-    termId.value = terms.value.find(t => t.isCurrent)?.id
+    termId.value = defaultAcademicTermId(terms.value)
   } catch (_) {}
   await load()
 })
@@ -204,7 +205,7 @@ function showCancel(type: string) { return type === 'Cancel' }
 
     <section class="adj-toolbar">
       <el-select v-model="termId" clearable placeholder="全部学期" @change="load">
-        <el-option v-for="t in terms" :key="t.id" :label="t.name" :value="t.id" />
+        <el-option v-for="t in terms" :key="t.id" :label="academicTermLabel(t)" :value="t.id" :class="academicTermOptionClass(t)" />
       </el-select>
       <el-segmented v-model="tab" :options="[
         ...(isTeacher ? [{ label: '我的申请', value: 'mine' }] : []),

web/src/views/CourseSelectionView.vue

@@ -12,6 +12,7 @@ import {
 } from '@element-plus/icons-vue'
 import http, { apiErrorMessage } from '../api/http'
 import { useAuthStore } from '../stores/auth'
+import { academicTermLabel, academicTermOptionClass, defaultAcademicTermId } from '../utils/academicTerms'
 
 const auth = useAuthStore()
 const managerRoles = ['SuperAdmin', 'AcademicAdmin', 'CollegeAdmin']
@@ -309,6 +310,8 @@ async function loadRounds(keepSelection = true) {
     rounds.value = (await http.get('/course-selections/rounds')).data
     const previousId = keepSelection ? selectedRound.value?.id : undefined
     const preferred = rounds.value.find((item) => item.id === previousId)
+      ?? rounds.value.find((item) => item.isAvailableNow && item.termIsCurrent)
+      ?? rounds.value.find((item) => item.termIsCurrent)
       ?? rounds.value.find((item) => item.isAvailableNow)
       ?? rounds.value[0]
     if (preferred) await selectRound(preferred)
@@ -362,12 +365,11 @@ async function loadTasks(academicTermId: string) {
 
 function openRound(round?: any) {
   editingRoundId.value = round?.id ?? ''
-  const currentTerm = terms.value.find((item) => item.isCurrent)
   const now = new Date()
   const ends = new Date(now.getTime() + 7 * 86400000)
   const withdrawal = new Date(now.getTime() + 14 * 86400000)
   Object.assign(roundForm, {
-    academicTermId: round?.academicTermId ?? currentTerm?.id,
+    academicTermId: round?.academicTermId ?? defaultAcademicTermId(terms.value),
     name: round?.name ?? '',
     startsAt: round ? toPickerValue(round.startsAt) : toPickerValue(now.toISOString()),
     endsAt: round ? toPickerValue(round.endsAt) : toPickerValue(ends.toISOString()),
@@ -719,7 +721,11 @@ onMounted(async () => {
         v-for="round in rounds"
         :key="round.id"
         type="button"
-        :class="{ active: selectedRound?.id === round.id }"
+        :class="{
+          active: selectedRound?.id === round.id,
+          'historical-record': !round.termIsCurrent && !round.termIsArchived,
+          'archived-record': round.termIsArchived,
+        }"
         @click="selectRound(round)"
       >
         <span>{{ round.termName }}</span>
@@ -1056,7 +1062,7 @@ onMounted(async () => {
         <div class="form-grid">
           <el-form-item label="开课学期" required>
             <el-select v-model="roundForm.academicTermId">
-              <el-option v-for="term in terms" :key="term.id" :label="term.name" :value="term.id" />
+              <el-option v-for="term in terms" :key="term.id" :label="academicTermLabel(term)" :value="term.id" :class="academicTermOptionClass(term)" />
             </el-select>
           </el-form-item>
           <el-form-item label="批次名称" required>