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/SchedulesView.vue

@@ -2,6 +2,7 @@
 import { computed, onBeforeUnmount, onMounted, reactive, ref } from 'vue'
 import { CopyDocument, EditPen, Plus, Promotion, Refresh, Search, Setting } from '@element-plus/icons-vue'
 import http, { apiErrorMessage } from '../api/http'
+import { academicTermLabel, academicTermOptionClass, defaultAcademicTermId } from '../utils/academicTerms'
 
 const plans = ref<any[]>([])
 const selected = ref<any | null>(null)
@@ -749,7 +750,7 @@ onMounted(async () => {
   classrooms.value = classroomRes.data.filter((item: any) => item.isEnabled)
   campuses.value = campusRes.data.filter((item: any) => item.isEnabled)
   buildings.value = buildingRes.data.filter((item: any) => item.isEnabled)
-  termId.value = terms.value.find((item) => item.isCurrent)?.id
+  termId.value = defaultAcademicTermId(terms.value)
   await Promise.all([loadPlans(false), loadSchedulingSettings()])
 })
 
@@ -775,7 +776,7 @@ onBeforeUnmount(() => {
 
     <section class="schedule-toolbar">
       <el-select v-model="termId" placeholder="选择学期" @change="changeTerm">
-        <el-option v-for="item in terms" :key="item.id" :label="item.name" :value="item.id" />
+        <el-option v-for="item in terms" :key="item.id" :label="academicTermLabel(item)" :value="item.id" :class="academicTermOptionClass(item)" />
       </el-select>
       <div class="schedule-version-strip">
         <button
@@ -946,7 +947,7 @@ onBeforeUnmount(() => {
 
     <el-dialog v-model="planDialog" :title="editingPlanId ? '编辑排课版本' : '新建排课版本'" width="560px">
       <el-form label-position="top">
-        <el-form-item label="学期" required><el-select v-model="planForm.academicTermId"><el-option v-for="item in terms" :key="item.id" :label="item.name" :value="item.id" /></el-select></el-form-item>
+        <el-form-item label="学期" required><el-select v-model="planForm.academicTermId"><el-option v-for="item in terms" :key="item.id" :label="academicTermLabel(item)" :value="item.id" :class="academicTermOptionClass(item)" /></el-select></el-form-item>
         <el-form-item label="版本名称" required><el-input v-model="planForm.name" placeholder="如：第一轮正式课表" /></el-form-item>
         <el-form-item label="版本号" required><el-input v-model="planForm.version" placeholder="如 V1" /></el-form-item>
         <el-form-item label="备注"><el-input v-model="planForm.notes" type="textarea" :rows="2" /></el-form-item>