第一步选择题支持从题库选题：新增共用选题弹窗(仅单选题、按题干去重、复制快照转step_one_questions格式)，教师端取本校题库(scope=school)，平台端取平台题库

src/views/components/StepOneQuestionBankPicker.vue

@@ -0,0 +1,135 @@
+<template>
+    <el-dialog :model-value="visible" title="从题库选择单选题" width="min(880px, 94vw)" append-to-body
+        class="step-one-bank-picker" @update:model-value="close">
+        <div class="bank-picker-intro">
+            <div>
+                <span>QUESTION BANK</span>
+                <p>勾选后确认，题目会复制为当前任务的第一步选择题；仅列出题库中的单选题，与现有题目重复的不再列出。</p>
+            </div>
+            <span class="bank-picker-count">已选 {{ checkedIds.size }} 题</span>
+        </div>
+
+        <div v-loading="loading" class="bank-question-list">
+            <article v-for="(question, index) in selectable" :key="question.id" role="button" tabindex="0"
+                :class="['bank-question-card', { 'is-checked': checkedIds.has(question.id) }]"
+                @click="toggle(question)" @keydown.enter.prevent="toggle(question)">
+                <span class="bank-check">{{ checkedIds.has(question.id) ? '✓' : String(index + 1).padStart(2, '0') }}</span>
+                <div class="bank-body">
+                    <h4>{{ question.stem }}</h4>
+                    <div class="bank-options">
+                        <span v-for="option in question.options" :key="option.label"><b>{{ option.label }}.</b>{{
+                            option.content }}</span>
+                    </div>
+                </div>
+            </article>
+            <el-empty v-if="!loading && !selectable.length" description="题库暂无可添加的单选题" />
+        </div>
+
+        <template #footer>
+            <el-button @click="close(false)">取消</el-button>
+            <el-button type="primary" :disabled="!checkedIds.size" @click="confirmSelection">
+                添加 {{ checkedIds.size }} 道题
+            </el-button>
+        </template>
+    </el-dialog>
+</template>
+
+<script setup>
+import { computed, ref, watch } from "vue";
+import { ElMessage } from "element-plus";
+import { QUESTION_OPTION_KEYS } from "@/utils/stepOneChoiceQuestions";
+
+const props = defineProps({
+    visible: { type: Boolean, default: false },
+    // 返回题库单选题列表的异步函数（教师端/平台端各自注入接口）
+    loadQuestions: { type: Function, required: true },
+    // 当前已配置的题目，用于按题干去重
+    existing: { type: Array, default: () => [] },
+});
+const emit = defineEmits(["update:visible", "confirm"]);
+
+const loading = ref(false);
+const questions = ref([]);
+const checkedIds = ref(new Set());
+
+const existingTitles = computed(() => new Set((props.existing || []).map((q) => String(q.title || "").trim())));
+// 已存在于任务配置中的题不再展示，避免重复添加
+const selectable = computed(() => questions.value.filter((q) => !existingTitles.value.has(String(q.stem || "").trim())));
+
+watch(() => props.visible, (opened) => {
+    if (opened) load();
+}, { immediate: true });
+
+async function load() {
+    checkedIds.value = new Set();
+    loading.value = true;
+    try {
+        questions.value = (await props.loadQuestions()) || [];
+    } catch {
+        questions.value = [];
+        ElMessage.error("题库加载失败，请稍后重试");
+    } finally {
+        loading.value = false;
+    }
+}
+
+function toggle(question) {
+    const next = new Set(checkedIds.value);
+    next.has(question.id) ? next.delete(question.id) : next.add(question.id);
+    checkedIds.value = next;
+}
+
+function convert(question, index) {
+    const options = (question.options || [])
+        .map((option) => ({ key: option.label, content: String(option.content || "").trim() }))
+        .filter((option) => option.key && option.content);
+    const keys = options.map((option) => option.key);
+    const rawAnswer = Array.isArray(question.answer) ? question.answer[0] : question.answer;
+    const answer = keys.includes(rawAnswer) ? rawAnswer : keys[0] || QUESTION_OPTION_KEYS[0];
+    return {
+        id: `step-one-question-${Date.now()}-${index + 1}`,
+        title: String(question.stem || "").trim(),
+        options,
+        answer,
+    };
+}
+
+function confirmSelection() {
+    const picked = questions.value.filter((q) => checkedIds.value.has(q.id));
+    if (!picked.length) return;
+    emit("confirm", picked.map(convert));
+    close();
+}
+
+function close(value = false) {
+    emit("update:visible", value);
+}
+</script>
+
+<style lang="scss">
+.step-one-bank-picker {
+    .el-dialog { overflow: hidden; border: 1px solid #cfe2f5; background: #ffffff; box-shadow: 0 24px 80px rgba(30, 58, 95, 0.46); }
+    .el-dialog__header { margin: 0; padding: 20px 24px; border-bottom: 1px solid #cfe2f5; }
+    .el-dialog__title { color: #1e3a5f; font-size: 18px; font-weight: 800; }
+    .el-dialog__body { max-height: min(64vh, 700px); overflow-y: auto; padding: 20px 24px; }
+    .el-dialog__footer { padding: 16px 24px; border-top: 1px solid #cfe2f5; }
+}
+.bank-picker-intro { display:flex; align-items:center; justify-content:space-between; gap:20px; margin-bottom:18px; padding:15px 17px; border-left:3px solid #1e88e5; background:linear-gradient(90deg,rgba(187,222,251,.5),transparent); }
+.bank-picker-intro span { color:#1e88e5; font-size:12px; font-weight:800; letter-spacing:.12em; }
+.bank-picker-intro p { margin:5px 0 0; color:#5a7a9a; line-height:1.6; }
+.bank-picker-count { flex-shrink:0; padding:6px 14px; color:#1e88e5; font-size:13px; font-weight:800; border:1px solid #cfe2f5; border-radius:16px; background:#f0f6fd; }
+.bank-question-list { display:grid; gap:12px; min-height:120px; }
+.bank-question-card { display:flex; gap:12px; padding:14px 16px; border:1px solid #cfe2f5; border-radius:10px; background:#ffffff; cursor:pointer; transition:all .16s ease;
+    &:hover { border-color:#1e88e5; background:#f6fafe; }
+    &.is-checked { border-color:#1e88e5; background:#eaf3fd; }
+}
+.bank-check { flex:0 0 auto; display:grid; place-items:center; width:28px; height:28px; margin-top:2px; color:#1e88e5; font-size:12px; font-weight:900; border:1px solid #cfe2f5; border-radius:50%; background:#f0f6fd; }
+.bank-question-card.is-checked .bank-check { color:#ffffff; background:#1e88e5; border-color:#1e88e5; }
+.bank-body { min-width:0;
+    h4 { margin:0 0 8px; color:#1f2937; font-size:14px; line-height:1.6; }
+}
+.bank-options { display:grid; gap:4px;
+    span { color:#5a7a9a; font-size:13px; line-height:1.55; }
+    b { margin-right:6px; color:#1e88e5; font-weight:700; }
+}
+</style>

src/views/schoolAdmin/trainingTask/index.vue

@@ -408,11 +408,15 @@
                 </div>
               </div>
               <div class="material-ops">
+                <el-button v-if="!isReadonly" class="upload-btn" @click="bankPickerVisible = true">
+                  从题库选题
+                </el-button>
                 <el-button v-if="!isReadonly" type="primary" class="upload-btn" @click="choiceEditorVisible = true">
                   设置选择题
                 </el-button>
               </div>
             </div>
+            <StepOneQuestionBankPicker v-model:visible="bankPickerVisible" :load-questions="loadBankQuestions" :existing="taskForm.stepOneQuestions" @confirm="handleBankConfirm" />
             <StepOneChoiceQuestionEditor v-model:visible="choiceEditorVisible" v-model="taskForm.stepOneQuestions" :task-name="taskForm.title" />
 
             <el-form-item label="步骤名称：">
@@ -478,7 +482,9 @@ import {
   uploadTrainingTaskMaterial,
 } from "@/api/trainingTask";
 import StepOneChoiceQuestionEditor from "@/views/components/StepOneChoiceQuestionEditor.vue";
+import StepOneQuestionBankPicker from "@/views/components/StepOneQuestionBankPicker.vue";
 import { parseStepOneChoiceQuestions, supportsStepOneChoiceQuestions } from "@/utils/stepOneChoiceQuestions";
+import { getPlatformQuestions } from "@/api/exam";
 
 const { proxy } = getCurrentInstance();
 
@@ -488,6 +494,7 @@ const loading = ref(false);
 const saving = ref(false);
 const uploadingField = ref("");
 const choiceEditorVisible = ref(false);
+const bankPickerVisible = ref(false);
 // 四类资料槽位：key 对应 taskForm 的 `${key}Name` / `${key}Url` 字段
 const materialSlots = [
   { key: "material", label: "案例资料" },
@@ -600,6 +607,17 @@ function supportsStepOneChoice(taskKey) {
   return supportsStepOneChoiceQuestions(taskKey);
 }
 
+// 平台题库单选题（平台管理员维护默认任务，题源为平台题库）
+async function loadBankQuestions() {
+  const res = await getPlatformQuestions({ type: "SINGLE" });
+  return res?.data || [];
+}
+
+function handleBankConfirm(questions) {
+  taskForm.stepOneQuestions = [...(taskForm.stepOneQuestions || []), ...questions];
+  proxy?.$modal?.msgSuccess(`已从题库添加 ${questions.length} 道题，点击“保存配置”后生效`);
+}
+
 function hasMaterial(slotKey) {
   return isRealMaterial(taskForm[`${slotKey}Name`], taskForm[`${slotKey}Url`]);
 }

src/views/teacherEnd/trainingTask/index.vue

@@ -359,11 +359,15 @@
                                 </div>
                             </div>
                             <div class="material-ops">
+                                <el-button v-if="!isReadonly" class="upload-btn" @click="bankPickerVisible = true">
+                                    从题库选题
+                                </el-button>
                                 <el-button v-if="!isReadonly" type="primary" class="upload-btn" @click="choiceEditorVisible = true">
                                     设置选择题
                                 </el-button>
                             </div>
                         </div>
+                        <StepOneQuestionBankPicker v-model:visible="bankPickerVisible" :load-questions="loadBankQuestions" :existing="taskForm.stepOneQuestions" @confirm="handleBankConfirm" />
                         <StepOneChoiceQuestionEditor v-model:visible="choiceEditorVisible" v-model="taskForm.stepOneQuestions" :task-name="taskForm.title" />
 
                         <!-- 步骤数量与顺序固定，仅允许修改名称 -->
@@ -420,7 +424,9 @@ import { createStudentDemoSession } from "@/api/studentDemo"
 import * as indexApi from "@/api/teacher"
 import useUserStore from "@/store/modules/user"
 import StepOneChoiceQuestionEditor from "@/views/components/StepOneChoiceQuestionEditor.vue"
+import StepOneQuestionBankPicker from "@/views/components/StepOneQuestionBankPicker.vue"
 import { parseStepOneChoiceQuestions, supportsStepOneChoiceQuestions } from "@/utils/stepOneChoiceQuestions"
+import { getQuestions } from "@/api/exam"
 
 const { proxy } = getCurrentInstance()
 const userStore = useUserStore()
@@ -433,6 +439,7 @@ const saving = ref(false)
 const restoring = ref(false)
 const uploadingField = ref("")
 const choiceEditorVisible = ref(false)
+const bankPickerVisible = ref(false)
 // 四类资料槽位：key 对应 taskForm 的 `${key}Name` / `${key}Url` 字段
 const materialSlots = [
     { key: "material", label: "案例资料" },
@@ -603,6 +610,17 @@ function supportsStepOneChoice(taskKey) {
     return supportsStepOneChoiceQuestions(taskKey)
 }
 
+// 本校题库单选题（平台题 + 本校教师题，按学校过滤）
+async function loadBankQuestions() {
+    const res = await getQuestions({ scope: "school", type: "SINGLE" })
+    return res?.data || []
+}
+
+function handleBankConfirm(questions) {
+    taskForm.stepOneQuestions = [...(taskForm.stepOneQuestions || []), ...questions]
+    proxy?.$modal?.msgSuccess(`已从题库添加 ${questions.length} 道题，点击“保存配置”后生效`)
+}
+
 function hasMaterial(slotKey) {
     return isRealMaterial(taskForm[`${slotKey}Name`], taskForm[`${slotKey}Url`])
 }