草稿计划支持选择场次后“批量移除已选场次”，一次最多 100 个。

批量操作会完整校验：包含不存在、其他计划或已发布计划的场次时整批拒绝，不会部分删除。[ExamsController.cs (line 384)](E:/jiaowu/src/Jiaowu.Api/Controllers/ExamsController.cs:384)
草稿计划新增“删除草稿”按钮，删除前显示计划名称及场次数量确认。[ExamsView.vue (line 292)](E:/jiaowu/web/src/views/ExamsView.vue:292)
删除草稿计划会级联清理场次和监考关联；已发布计划不能删除。[ExamsController.cs (line 81)](E:/jiaowu/src/Jiaowu.Api/Controllers/ExamsController.cs:81)
删除后会自动切换到其他计划；没有剩余计划时正确显示空状态。
新增草稿、已发布、跨计划混选及级联删除测试。[ExamDeletionControllerTests.cs (line 17)](E:/jiaowu/tests/Jiaowu.Api.Tests/ExamDeletionControllerTests.cs:17)

web/src/views/ExamsView.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { computed, onMounted, reactive, ref } from 'vue'
-import { Download, Plus, Promotion, Refresh, UserFilled, Setting } from '@element-plus/icons-vue'
+import { Delete, Download, Plus, Promotion, Refresh, UserFilled, Setting } from '@element-plus/icons-vue'
 import http, { apiErrorMessage } from '../api/http'
 import { downloadApiFile } from '../api/excel'
 import { useAuthStore } from '../stores/auth'
@@ -22,6 +22,8 @@ const timeSlots = ref<any[]>([])
 const loading = ref(false)
 const arrangeLoading = ref(false)
 const exportLoading = ref(false)
+const removeLoading = ref(false)
+const deletePlanLoading = ref(false)
 const planDialog = ref(false)
 const sessionDialog = ref(false)
 const editingSession = ref<any | null>(null)
@@ -104,6 +106,12 @@ async function load() {
       ?? plans.value.find((x) => x.termIsCurrent)
       ?? plans.value[0]
     if (plan) await selectPlan(plan.id)
+    else {
+      selected.value = null
+      selectedSessionIds.value = []
+      tasks.value = []
+      timeSlots.value = []
+    }
   } catch (error) { ElMessage.error(apiErrorMessage(error)) }
   finally { loading.value = false }
 }
@@ -189,6 +197,35 @@ async function removeSession(row: any) {
     if (error !== 'cancel' && error !== 'close') ElMessage.error(apiErrorMessage(error))
   }
 }
+async function removeSelectedSessions() {
+  if (!selected.value || selectedSessionIds.value.length === 0) return
+  const count = selectedSessionIds.value.length
+  if (count > 100) {
+    ElMessage.warning('一次最多移除100个考试场次，请分批选择')
+    return
+  }
+  try {
+    await ElMessageBox.confirm(
+      `确定从当前考试计划移除已选的 ${count} 个考试场次吗？`,
+      '批量移除考试场次',
+      {
+        type: 'warning',
+        confirmButtonText: '确认移除',
+      },
+    )
+    removeLoading.value = true
+    const res = await http.post(
+      `/exams/plans/${selected.value.id}/sessions/batch-remove`,
+      { sessionIds: selectedSessionIds.value },
+    )
+    ElMessage.success(`已移除 ${res.data.removedCount} 个考试场次`)
+    await selectPlan(selected.value.id)
+  } catch (error: any) {
+    if (error !== 'cancel' && error !== 'close') ElMessage.error(apiErrorMessage(error))
+  } finally {
+    removeLoading.value = false
+  }
+}
 function selectFilteredTasks() {
   selectedTaskIds.value = Array.from(new Set([
     ...selectedTaskIds.value,
@@ -252,6 +289,29 @@ async function publishPlan() {
     if (error !== 'cancel' && error !== 'close') ElMessage.error(apiErrorMessage(error))
   }
 }
+async function deleteDraftPlan() {
+  if (!selected.value || selected.value.status !== 'Draft') return
+  try {
+    await ElMessageBox.confirm(
+      `确定删除草稿考试计划“${selected.value.name}”吗？计划内 ${selected.value.sessions.length} 个考试场次也会一并删除，此操作无法撤销。`,
+      '删除考试计划',
+      {
+        type: 'warning',
+        confirmButtonText: '删除草稿',
+      },
+    )
+    deletePlanLoading.value = true
+    await http.delete(`/exams/plans/${selected.value.id}`)
+    ElMessage.success('草稿考试计划已删除')
+    selected.value = null
+    selectedSessionIds.value = []
+    await load()
+  } catch (error: any) {
+    if (error !== 'cancel' && error !== 'close') ElMessage.error(apiErrorMessage(error))
+  } finally {
+    deletePlanLoading.value = false
+  }
+}
 async function exportSignInSheets() {
   if (!selected.value) return
   exportLoading.value = true
@@ -345,6 +405,14 @@ onMounted(async () => {
             <el-button v-if="selected.status === 'Draft'" :icon="Setting" @click="autoArrange('all')" :loading="arrangeLoading">一键完成</el-button>
             <el-button v-if="selected.status === 'Draft'" :icon="Plus" @click="openSession()">批量安排场次</el-button>
             <el-button v-if="selected.status === 'Draft'" type="primary" :icon="Promotion" @click="publishPlan">发布计划</el-button>
+            <el-button
+              v-if="selected.status === 'Draft'"
+              type="danger"
+              plain
+              :icon="Delete"
+              :loading="deletePlanLoading"
+              @click="deleteDraftPlan"
+            >删除草稿</el-button>
           </div>
         </header>
         <div class="exam-filter-bar">
@@ -359,6 +427,14 @@ onMounted(async () => {
             <el-button link type="primary" @click="selectFilteredSessions">选择筛选结果</el-button>
             <el-button link @click="clearSessionSelection">清空选择</el-button>
             <el-tag v-if="selectedSessionIds.length" type="info">已选 {{ selectedSessionIds.length }} 个</el-tag>
+            <el-button
+              type="danger"
+              plain
+              :icon="Delete"
+              :loading="removeLoading"
+              :disabled="selectedSessionIds.length === 0"
+              @click="removeSelectedSessions"
+            >批量移除已选场次</el-button>
           </template>
         </div>
         <div class="exam-timeline">