fix: 修复陪练记录回放对话功能

- 回放对话时调用 API 获取对话详情
- 添加加载状态显示
- 添加空数据提示

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/views/trainee/practice-records.vue

@@ -283,8 +283,15 @@
         </div>
 
         <!-- 对话记录 -->
-        <div class="conversation-replay">
-          <div class="conversation-list">
+        <div class="conversation-replay" v-loading="replayLoading">
+          <!-- 空状态提示 -->
+          <el-empty 
+            v-if="!replayLoading && (!currentRecord.conversation || currentRecord.conversation.length === 0)" 
+            description="暂无对话记录"
+          />
+          
+          <!-- 对话列表 -->
+          <div class="conversation-list" v-else>
             <div 
               v-for="(message, index) in currentRecord.conversation" 
               :key="index"
@@ -342,6 +349,7 @@ const total = ref(0)
 
 // 弹窗状态
 const replayDialogVisible = ref(false)
+const replayLoading = ref(false)
 const currentRecord = ref<any>(null)
 
 // 筛选表单
@@ -608,9 +616,32 @@ const viewPracticeReport = (record: any) => {
 /**
  * 回放陪练对话
  */
-const replayPractice = (record: any) => {
-  currentRecord.value = record
-  replayDialogVisible.value = true
+const replayPractice = async (record: any) => {
+  try {
+    // 先设置基本信息并打开弹窗
+    currentRecord.value = { ...record, conversation: [] }
+    replayDialogVisible.value = true
+    replayLoading.value = true
+    
+    // 调用 API 获取对话详情
+    const response: any = await practiceApi.getPracticeReport(record.sessionId)
+    
+    if (response.code === 200 && response.data?.analysis?.dialogue_review) {
+      // 转换对话数据格式
+      const dialogueReview = response.data.analysis.dialogue_review
+      currentRecord.value.conversation = dialogueReview.map((item: any) => ({
+        role: item.speaker === 'user' ? 'user' : 'ai',
+        content: item.content,
+        timestamp: item.time || '',
+        feedback: item.comment || ''
+      }))
+    }
+  } catch (error: any) {
+    console.error('获取对话详情失败:', error)
+    ElMessage.error('获取对话详情失败，请稍后重试')
+  } finally {
+    replayLoading.value = false
+  }
 }
 
 /**