feat: add teacher help cards

ai_knowledge_base_v2/apps/user-client/src/App.vue

@@ -9,7 +9,7 @@ import MessageList, { type DisplayMessage } from "./components/MessageList.vue";
 import SessionDrawer from "./components/SessionDrawer.vue";
 import SessionQuota from "./components/SessionQuota.vue";
 import { ApiError, api, clearToken, getToken, streamChat } from "./services/api";
-import type { ChatMessage as ApiMessage, ChatSession, GrowthProfileResult, UserProfile } from "./types/api";
+import type { ChatMessage as ApiMessage, ChatSession, GrowthProfileResult, TeacherHelpCard, UserProfile } from "./types/api";
 
 const user = ref<UserProfile | null>(null);
 const sessions = ref<ChatSession[]>([]);
@@ -23,9 +23,13 @@ const loadingSessions = ref(false);
 const sessionOperationPending = ref(false);
 const logoutDialogOpen = ref(false);
 const profileDialogOpen = ref(false);
+const helpCardDialogOpen = ref(false);
 const growthProfile = ref<GrowthProfileResult | null>(null);
+const helpCard = ref<TeacherHelpCard | null>(null);
+const helpCardContent = ref("");
 const profileLoading = ref(false);
 const finishingTopic = ref(false);
+const generatingHelpCard = ref(false);
 const statusText = ref("连接后端中");
 const toastText = ref("");
 const followingOutput = ref(true);
@@ -214,6 +218,39 @@ async function finishCurrentTopic() {
   }
 }
 
+async function generateHelpCard() {
+  if (!activeSessionId.value || sending.value || generatingHelpCard.value) return;
+  generatingHelpCard.value = true;
+  try {
+    const result = await api.generateHelpCard(activeSessionId.value);
+    helpCard.value = result;
+    helpCardContent.value = result.content;
+    helpCardDialogOpen.value = true;
+    showToast("求助卡已生成，可编辑后复制给老师");
+    await refreshProfile();
+  } catch (error) {
+    handleError(error, "求助卡生成失败");
+  } finally {
+    generatingHelpCard.value = false;
+  }
+}
+
+async function copyHelpCard() {
+  if (!helpCardContent.value.trim()) {
+    showToast("求助卡内容为空");
+    return;
+  }
+  try {
+    await copyText(helpCardContent.value);
+    if (helpCard.value) {
+      helpCard.value = await api.markHelpCardCopied(helpCard.value.id);
+    }
+    showToast("已复制，可粘贴给老师或班级群");
+  } catch (error) {
+    handleError(error, "复制失败，请手动选择文本复制");
+  }
+}
+
 async function openGrowthProfile() {
   profileDialogOpen.value = true;
   profileLoading.value = true;
@@ -326,6 +363,22 @@ function showToast(message: string) {
     toastTimer = null;
   }, 3200);
 }
+
+async function copyText(text: string) {
+  if (navigator.clipboard?.writeText) {
+    await navigator.clipboard.writeText(text);
+    return;
+  }
+  const textarea = document.createElement("textarea");
+  textarea.value = text;
+  textarea.setAttribute("readonly", "true");
+  textarea.style.position = "fixed";
+  textarea.style.left = "-9999px";
+  document.body.appendChild(textarea);
+  textarea.select();
+  document.execCommand("copy");
+  document.body.removeChild(textarea);
+}
 </script>
 
 <template>
@@ -340,8 +393,10 @@ function showToast(message: string) {
           :limit="user.dailyLimit"
           :entitlement="user.entitlement"
           :finishing="finishingTopic"
+          :generating-help-card="generatingHelpCard"
           @finish-topic="finishCurrentTopic"
           @open-profile="openGrowthProfile"
+          @generate-help-card="generateHelpCard"
         />
         <MessageList
           ref="messageList"
@@ -391,6 +446,19 @@ function showToast(message: string) {
       </section>
     </AppDialog>
 
+    <AppDialog v-if="helpCardDialogOpen" title="老师求助卡" labelled-by="help-card-title" @close="helpCardDialogOpen = false">
+      <section class="help-card-dialog">
+        <p>这不是转人工工单，系统不会自动发送给老师。你可以按真实情况删改后，自行复制给老师或班级群确认。</p>
+        <textarea v-model="helpCardContent" aria-label="求助卡内容" />
+      </section>
+      <template #footer>
+        <div class="dialog-actions">
+          <button type="button" class="dialog-secondary" @click="helpCardDialogOpen = false">关闭</button>
+          <button type="button" class="dialog-primary" @click="copyHelpCard">复制求助卡</button>
+        </div>
+      </template>
+    </AppDialog>
+
     <AppDialog v-if="logoutDialogOpen" title="退出登录" labelled-by="logout-dialog-title" @close="logoutDialogOpen = false">
       <p class="confirm-copy">确定退出当前账号吗？</p>
       <template #footer>