fix(practice): generate replies from coach hints

mobile-uni/src/pages/user/practice/index.vue

@@ -344,7 +344,13 @@
                   >
                     {{ speechButtonLabel(`turn-${index}`) }}
                   </button>
-                  <button class="bubble-action" @click="adoptCoachHint(turn.text)">用这句话回复</button>
+                  <button
+                    class="bubble-action"
+                    :disabled="replySuggestionLoading !== null || busy"
+                    @click="adoptCoachHint(turn, index)"
+                  >
+                    {{ replySuggestionLoading === index ? '生成中…' : '用这句话回复' }}
+                  </button>
                 </view>
               </view>
             </view>
@@ -556,6 +562,7 @@ const helpRefs = ref<string[]>([]);
 const lastTraineeText = ref('');
 const lastCoachRoundIndex = ref<number | null>(null);
 const adjustingStyle = ref('');
+const replySuggestionLoading = ref<number | null>(null);
 const emotionScore = ref(0);
 const trustScore = ref(0);
 const redFlagActive = ref(false);
@@ -808,12 +815,30 @@ const handleComposerSend = (text: string) => {
   void submit();
 };
 
-/** 旧 H5「建议回复」逻辑的会话版:把老师傅建议填入输入框,员工可改后发送。 */
-const adoptCoachHint = (text: string) => {
-  const value = (text || '').trim();
-  if (!value) return;
-  composerRef.value?.setDraft(value);
-  uni.showToast({ title: '已填入输入框，可修改后发送', icon: 'none' });
+const adoptCoachHint = async (turn: PracticeTurn, index: number) => {
+  if (busy.value || replySuggestionLoading.value !== null || !sessionId.value || !Number.isInteger(turn.roundIndex)) return;
+  const request = requests.begin('reply-suggestion');
+  replySuggestionLoading.value = index;
+  message.value = '';
+  try {
+    const data = await submitPracticeTurn({
+      sessionId: sessionId.value,
+      roundIndex: turn.roundIndex as number,
+      traineeText: '',
+      suggestReply: true
+    });
+    if (!requests.isCurrent(request)) return;
+    const value = (data.suggestedReply || '').trim();
+    if (!value) throw new Error(data.message || '未生成可用回复');
+    composerRef.value?.setDraft(value);
+    uni.showToast({ title: '已生成回复，可修改后发送', icon: 'none' });
+  } catch (error) {
+    if (!requests.isCurrent(request)) return;
+    handleError(error, '回复生成失败');
+    uni.showToast({ title: message.value || '回复生成失败', icon: 'none' });
+  } finally {
+    if (requests.isCurrent(request)) replySuggestionLoading.value = null;
+  }
 };
 
 const submitTranscribed = async (text: string, audioUrl: string, ossId?: string) => {
@@ -953,6 +978,7 @@ const clearPracticeData = () => {
   lastTraineeText.value = '';
   lastCoachRoundIndex.value = null;
   adjustingStyle.value = '';
+  replySuggestionLoading.value = null;
   emotionScore.value = 0;
   trustScore.value = 0;
   redFlagActive.value = false;
@@ -975,9 +1001,9 @@ const requireLogin = () => {
   return false;
 };
 
-const appendTurn = (role: PracticeRole, text?: string, emotion = 0, synthesizeCustomerVoice = true, customerTurnIndex?: number) => {
+const appendTurn = (role: PracticeRole, text?: string, emotion = 0, synthesizeCustomerVoice = true, customerTurnIndex?: number, coachRoundIndex?: number) => {
   if (!text) return;
-  turns.value.push({ role, text });
+  turns.value.push({ role, text, roundIndex: coachRoundIndex });
   if (role === 'customer' && synthesizeCustomerVoice) {
     void prepareTurnVoice(turns.value.length - 1, text, emotion, customerTurnIndex);
   }
@@ -1586,7 +1612,7 @@ const replaceLastCoachHint = (text?: string) => {
   if (!text) return;
   for (let index = turns.value.length - 1; index >= 0; index -= 1) {
     if (turns.value[index].role === 'coach') {
-      turns.value[index] = { role: 'coach', text };
+      turns.value[index] = { ...turns.value[index], text };
       return;
     }
   }
@@ -1661,7 +1687,7 @@ const submit = async () => {
     emotionScore.value = data.emotion ?? emotionScore.value;
     trustScore.value = data.trust ?? trustScore.value;
     redFlagActive.value = Boolean(data.redFlag);
-    appendTurn('coach', data.redFlag ? data.coachHint || '先承接诉求，再给处理节点。' : data.coachHint);
+    appendTurn('coach', data.redFlag ? data.coachHint || '先承接诉求，再给处理节点。' : data.coachHint, 0, true, undefined, submittedRound);
     if (data.redFlag) {
       message.value = '命中红线，请按老师傅建议重说本轮';
       status.value = 'active';
@@ -1757,6 +1783,7 @@ const invalidateRequests = () => {
   feedbackSubmittingId.value = null;
   helpLoading.value = false;
   adjustingStyle.value = '';
+  replySuggestionLoading.value = null;
   satisfactionBusy.value = false;
   if (status.value === 'starting') status.value = 'idle';
   if (status.value === 'submitting') status.value = sessionId.value ? 'active' : 'idle';

mobile-uni/src/services/practice.ts

@@ -80,6 +80,7 @@ export const submitPracticeTurn = (params: {
   traineeAudioOssId?: number | string;
   regenerate?: boolean;
   style?: string;
+  suggestReply?: boolean;
 }) =>
   apiRequest<PracticeTurnResponse>({
     url: '/api/train/practice/turn',

mobile-uni/src/types/api.ts

@@ -510,6 +510,7 @@ export type PracticeRole = 'customer' | 'trainee' | 'coach';
 export interface PracticeTurn {
   role: PracticeRole;
   text: string;
+  roundIndex?: number;
 }
 
 export interface PracticeStartResponse {
@@ -548,6 +549,7 @@ export interface PracticeTurnResponse {
   roundIndex: number;
   finished: boolean;
   message?: string;
+  suggestedReply?: string;
 }
 
 export interface PracticeDimensionScore {

mobile-uni/tests/mobile-user-pages.test.mjs

@@ -341,6 +341,19 @@ test('训练页保留任务卡、对话区、回复区和结果区并互斥切
   assert.match(source, /result\.mentorRewrite/);
 });
 
+test('老师傅提示由 LLM 生成可发送回复后再填入输入框', async () => {
+  const [source, service] = await Promise.all([
+    pageSource('../src/pages/user/practice/index.vue'),
+    pageSource('../src/services/practice.ts')
+  ]);
+
+  assert.match(source, /suggestReply:\s*true/);
+  assert.match(source, /data\.suggestedReply/);
+  assert.match(source, /setDraft\(value\)/);
+  assert.doesNotMatch(source, /const adoptCoachHint[\s\S]{0,300}setDraft\(\(turn\.text/);
+  assert.match(service, /suggestReply\?:\s*boolean/);
+});
+
 test('底部固定导航页面复用安全操作区', async () => {
   const [base, practice, assign, review] = await Promise.all([
     pageSource('../src/styles/base.css'),