diff --git a/admin-frontend/.eslintrc.cjs b/admin-frontend/.eslintrc.cjs
new file mode 100644
index 0000000..8bc624d
--- /dev/null
+++ b/admin-frontend/.eslintrc.cjs
@@ -0,0 +1,23 @@
+/* eslint-env node */
+require('@rushstack/eslint-patch/modern-module-resolution')
+
+module.exports = {
+  root: true,
+  extends: [
+    'plugin:vue/vue3-recommended',
+    'eslint:recommended',
+    '@vue/eslint-config-typescript'
+  ],
+  parserOptions: {
+    ecmaVersion: 'latest'
+  },
+  rules: {
+    // Vue 组件命名规范
+    'vue/multi-word-component-names': 'off',
+    // 允许使用 any 类型（逐步改进）
+    '@typescript-eslint/no-explicit-any': 'warn',
+    // 未使用变量警告
+    '@typescript-eslint/no-unused-vars': 'warn'
+  }
+}
+
diff --git a/admin-frontend/public/favicon.svg b/admin-frontend/public/favicon.svg
index a89c613..6712d34 100644
--- a/admin-frontend/public/favicon.svg
+++ b/admin-frontend/public/favicon.svg
@@ -17,3 +17,8 @@
 
 
 
+
+
+
+
+
diff --git a/backend/Dockerfile.admin b/backend/Dockerfile.admin
index 84de7fd..7cafae6 100644
--- a/backend/Dockerfile.admin
+++ b/backend/Dockerfile.admin
@@ -64,3 +64,8 @@ CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload
 
 
 
+
+
+
+
+
diff --git a/backend/app/api/v1/exam.py b/backend/app/api/v1/exam.py
index 5cbc1fa..55ecba3 100644
--- a/backend/app/api/v1/exam.py
+++ b/backend/app/api/v1/exam.py
@@ -141,6 +141,7 @@ async def submit_exam(
 @router.get("/mistakes", response_model=ResponseModel[GetMistakesResponse])
 async def get_mistakes(
     exam_id: int,
+    round: int = Query(None, description="获取指定轮次的错题，不传则获取所有轮次"),
     db: AsyncSession = Depends(get_db),
     current_user: User = Depends(get_current_user),
 ):
@@ -149,18 +150,31 @@ async def get_mistakes(
     
     用于第二、三轮考试时获取上一轮的错题记录
     返回的数据可直接序列化为JSON字符串作为mistake_records参数传给考试生成接口
+    
+    参数说明：
+    - exam_id: 考试ID
+    - round: 指定轮次（1/2/3），用于获取特定轮次的错题
+            第2轮考试时传入round=1，获取第1轮的错题
+            第3轮考试时传入round=2，获取第2轮的错题
+            不传则获取该考试的所有错题
     """
     logger.info(f"📋 GET /mistakes 收到请求")
     try:
-        logger.info(f"📋 获取错题记录 - exam_id: {exam_id}, user_id: {current_user.id}")
+        logger.info(f"📋 获取错题记录 - exam_id: {exam_id}, round: {round}, user_id: {current_user.id}")
         
-        # 查询指定考试的错题记录
-        result = await db.execute(
-            select(ExamMistake).where(
-                ExamMistake.exam_id == exam_id,
-                ExamMistake.user_id == current_user.id,
-            ).order_by(ExamMistake.id)
+        # 构建查询条件
+        query = select(ExamMistake).where(
+            ExamMistake.exam_id == exam_id,
+            ExamMistake.user_id == current_user.id,
         )
+        
+        # 如果指定了轮次，只获取该轮次的错题
+        if round is not None:
+            query = query.where(ExamMistake.round == round)
+        
+        query = query.order_by(ExamMistake.id)
+        
+        result = await db.execute(query)
         mistakes = result.scalars().all()
         
         logger.info(f"✅ 查询到错题记录数量: {len(mistakes)}")
@@ -262,7 +276,18 @@ async def generate_exam(
     - 第一轮考试：mistake_records 传空或不传
     - 第二、三轮错题重考：mistake_records 传入上一轮错题记录的JSON字符串
     """
+    from app.models.course import Course
+    
     try:
+        # 验证课程存在性
+        course = await db.get(Course, request.course_id)
+        if not course or course.is_deleted:
+            logger.warning(f"课程不存在或已删除: course_id={request.course_id}")
+            raise HTTPException(
+                status_code=status.HTTP_400_BAD_REQUEST,
+                detail=f"无法生成试题：课程ID {request.course_id} 不存在或已被删除"
+            )
+        
         # 从用户信息中自动获取岗位ID（如果未提供）
         position_id = request.position_id
         if not position_id:
@@ -486,6 +511,7 @@ async def record_mistake(
         mistake = ExamMistake(
             user_id=current_user.id,
             exam_id=request.exam_id,
+            round=request.round,  # 记录考试轮次
             question_id=request.question_id,
             knowledge_point_id=None,  # 暂时设为None，避免外键约束
             question_content=request.question_content,
@@ -503,7 +529,7 @@ async def record_mistake(
         
         logger.info(
             f"记录错题成功 - user_id: {current_user.id}, exam_id: {request.exam_id}, "
-            f"mistake_id: {mistake.id}"
+            f"round: {request.round}, mistake_id: {mistake.id}"
         )
         
         return ResponseModel(
diff --git a/backend/app/models/exam_mistake.py b/backend/app/models/exam_mistake.py
index 69a999f..f627654 100644
--- a/backend/app/models/exam_mistake.py
+++ b/backend/app/models/exam_mistake.py
@@ -14,6 +14,7 @@ class ExamMistake(BaseModel):
     # 核心关联字段
     user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True, comment="用户ID")
     exam_id = Column(Integer, ForeignKey("exams.id", ondelete="CASCADE"), nullable=False, index=True, comment="考试ID")
+    round = Column(Integer, nullable=True, default=1, comment="考试轮次(1/2/3)")
     question_id = Column(Integer, ForeignKey("questions.id", ondelete="SET NULL"), nullable=True, index=True, comment="题目ID（AI生成的题目可能为空）")
     knowledge_point_id = Column(Integer, ForeignKey("knowledge_points.id", ondelete="SET NULL"), nullable=True, index=True, comment="关联的知识点ID")
     
diff --git a/backend/app/schemas/exam.py b/backend/app/schemas/exam.py
index aa4a068..92aeb9d 100644
--- a/backend/app/schemas/exam.py
+++ b/backend/app/schemas/exam.py
@@ -170,6 +170,7 @@ class JudgeAnswerResponse(BaseModel):
 class RecordMistakeRequest(BaseModel):
     """记录错题请求"""
     exam_id: int = Field(..., description="考试ID")
+    round: int = Field(1, description="考试轮次(1/2/3)")
     question_id: Optional[int] = Field(None, description="题目ID(AI生成的题目可能为空)")
     knowledge_point_id: Optional[int] = Field(None, description="知识点ID")
     question_content: str = Field(..., description="题目内容")
diff --git a/backend/app/services/ai/ability_analysis_service.py b/backend/app/services/ai/ability_analysis_service.py
index 5d4f234..693aff0 100644
--- a/backend/app/services/ai/ability_analysis_service.py
+++ b/backend/app/services/ai/ability_analysis_service.py
@@ -477,3 +477,8 @@ ability_analysis_service = AbilityAnalysisService()
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/course_chat_service.py b/backend/app/services/ai/course_chat_service.py
index 92a6014..a301f12 100644
--- a/backend/app/services/ai/course_chat_service.py
+++ b/backend/app/services/ai/course_chat_service.py
@@ -154,7 +154,10 @@ class CourseChatServiceV2:
             
             # 6. 更新会话索引
             if is_new_conversation:
-                await self._add_to_conversation_index(user_id, conversation_id, course_id)
+                await self._add_to_conversation_index(
+                    user_id, conversation_id, course_id, 
+                    first_message=query  # 使用用户第一条消息作为会话名称
+                )
             else:
                 await self._update_conversation_index(user_id, conversation_id)
             
@@ -202,7 +205,7 @@ class CourseChatServiceV2:
             Tuple[str, Optional[str]]: (事件类型, 数据)
                 - ("conversation_started", conversation_id): 会话开始
                 - ("chunk", text): 文本块
-                - ("end", None): 结束
+                - ("done", full_answer): 结束，附带完整回答
                 - ("error", message): 错误
         """
         full_answer = ""
@@ -251,7 +254,7 @@ class CourseChatServiceV2:
                 yield ("chunk", chunk)
             
             # 6. 发送结束事件
-            yield ("end", None)
+            yield ("done", full_answer)
             
             # 7. 保存对话历史
             await self._save_conversation_history(
@@ -262,7 +265,10 @@ class CourseChatServiceV2:
             
             # 8. 更新会话索引
             if is_new_conversation:
-                await self._add_to_conversation_index(user_id, conversation_id, course_id)
+                await self._add_to_conversation_index(
+                    user_id, conversation_id, course_id,
+                    first_message=query  # 使用用户第一条消息作为会话名称
+                )
             else:
                 await self._update_conversation_index(user_id, conversation_id)
             
@@ -526,7 +532,8 @@ class CourseChatServiceV2:
         self,
         user_id: int,
         conversation_id: str,
-        course_id: int
+        course_id: int,
+        first_message: str = ""
     ) -> None:
         """
         将会话添加到用户索引
@@ -535,6 +542,7 @@ class CourseChatServiceV2:
             user_id: 用户ID
             conversation_id: 会话ID
             course_id: 课程ID
+            first_message: 用户第一条消息（用于生成会话名称）
         """
         try:
             from app.core.redis import get_redis_client
@@ -547,12 +555,21 @@ class CourseChatServiceV2:
             await redis.zadd(index_key, {conversation_id: timestamp})
             await redis.expire(index_key, CONVERSATION_INDEX_TTL)
             
-            # 2. 保存会话元数据
+            # 2. 生成会话名称（取用户第一条消息的前30个字符）
+            conversation_name = ""
+            if first_message:
+                # 移除换行符，截取前30个字符
+                conversation_name = first_message.replace('\n', ' ').strip()[:30]
+                if len(first_message) > 30:
+                    conversation_name += "..."
+            
+            # 3. 保存会话元数据（包含会话名称）
             meta_key = f"{CONVERSATION_META_PREFIX}{conversation_id}"
             meta_data = {
                 "conversation_id": conversation_id,
                 "user_id": user_id,
                 "course_id": course_id,
+                "name": conversation_name,  # 会话名称
                 "created_at": timestamp,
                 "updated_at": timestamp,
             }
@@ -563,7 +580,8 @@ class CourseChatServiceV2:
             )
             
             logger.debug(
-                f"会话已添加到索引 - user_id: {user_id}, conversation_id: {conversation_id}"
+                f"会话已添加到索引 - user_id: {user_id}, conversation_id: {conversation_id}, "
+                f"name: {conversation_name}"
             )
             
         except RuntimeError:
@@ -671,8 +689,10 @@ class CourseChatServiceV2:
                         "updated_at": time.time(),
                     }
                 
-                # 获取最后一条消息作为预览
+                # 获取历史消息
                 history = await self._get_conversation_history(conv_id)
+                
+                # 获取最后一条消息作为预览
                 last_message = ""
                 if history:
                     # 获取最后一条 assistant 消息
@@ -683,8 +703,21 @@ class CourseChatServiceV2:
                                 last_message += "..."
                             break
                 
+                # 获取会话名称
+                # 优先使用元数据中保存的名称，如果没有则从历史消息中提取
+                conversation_name = meta.get("name", "")
+                if not conversation_name and history:
+                    # 从第一条用户消息生成名称
+                    for msg in history:
+                        if msg["role"] == "user":
+                            conversation_name = msg["content"].replace('\n', ' ').strip()[:30]
+                            if len(msg["content"]) > 30:
+                                conversation_name += "..."
+                            break
+                
                 conversations.append({
                     "id": conv_id,
+                    "name": conversation_name,  # 添加会话名称字段
                     "course_id": meta.get("course_id"),
                     "created_at": meta.get("created_at"),
                     "updated_at": meta.get("updated_at"),
diff --git a/backend/app/services/ai/exam_generator_service.py b/backend/app/services/ai/exam_generator_service.py
index 692bce6..4dbbabd 100644
--- a/backend/app/services/ai/exam_generator_service.py
+++ b/backend/app/services/ai/exam_generator_service.py
@@ -510,3 +510,8 @@ async def generate_exam(
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/knowledge_analysis_v2.py b/backend/app/services/ai/knowledge_analysis_v2.py
index 9f4d6c0..eafc93a 100644
--- a/backend/app/services/ai/knowledge_analysis_v2.py
+++ b/backend/app/services/ai/knowledge_analysis_v2.py
@@ -546,3 +546,8 @@ knowledge_analysis_service_v2 = KnowledgeAnalysisServiceV2()
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/llm_json_parser.py b/backend/app/services/ai/llm_json_parser.py
index 24b4264..23c4ae9 100644
--- a/backend/app/services/ai/llm_json_parser.py
+++ b/backend/app/services/ai/llm_json_parser.py
@@ -256,6 +256,16 @@ def _preprocess_text(text: str) -> str:
     # 移除零宽字符
     text = re.sub(r'[\u200b\u200c\u200d\ufeff]', '', text)
     
+    # 【重要】先替换中文标点为英文标点（在找边界之前做，否则中文引号会破坏边界检测）
+    cn_punctuation = {
+        '，': ',', '。': '.', '：': ':', '；': ';',
+        '"': '"', '"': '"', ''': "'", ''': "'",
+        '【': '[', '】': ']', '（': '(', '）': ')',
+        '｛': '{', '｝': '}',
+    }
+    for cn, en in cn_punctuation.items():
+        text = text.replace(cn, en)
+    
     # 提取 Markdown 代码块
     patterns = [
         r'```json\s*([\s\S]*?)\s*```',
@@ -705,3 +715,4 @@ def clean_llm_output(text: str) -> Tuple[str, List[str]]:
 
 
 
+
diff --git a/backend/app/services/ai/practice_scene_service.py b/backend/app/services/ai/practice_scene_service.py
index 86afa70..805ba2e 100644
--- a/backend/app/services/ai/practice_scene_service.py
+++ b/backend/app/services/ai/practice_scene_service.py
@@ -377,3 +377,8 @@ async def prepare_practice_knowledge(
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/ability_analysis_prompts.py b/backend/app/services/ai/prompts/ability_analysis_prompts.py
index 1bdccf3..5be0d71 100644
--- a/backend/app/services/ai/prompts/ability_analysis_prompts.py
+++ b/backend/app/services/ai/prompts/ability_analysis_prompts.py
@@ -213,3 +213,8 @@ PRIORITY_LEVELS = ["high", "medium", "low"]
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/answer_judge_prompts.py b/backend/app/services/ai/prompts/answer_judge_prompts.py
index 6580979..4721d01 100644
--- a/backend/app/services/ai/prompts/answer_judge_prompts.py
+++ b/backend/app/services/ai/prompts/answer_judge_prompts.py
@@ -46,3 +46,8 @@ INCORRECT_KEYWORDS = ["错误", "incorrect", "false", "no", "wrong", "不正确"
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/course_chat_prompts.py b/backend/app/services/ai/prompts/course_chat_prompts.py
index ac5ab4e..4c1d44f 100644
--- a/backend/app/services/ai/prompts/course_chat_prompts.py
+++ b/backend/app/services/ai/prompts/course_chat_prompts.py
@@ -72,3 +72,8 @@ DEFAULT_TEMPERATURE = 0.7
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/exam_generator_prompts.py b/backend/app/services/ai/prompts/exam_generator_prompts.py
index e979dfa..6940882 100644
--- a/backend/app/services/ai/prompts/exam_generator_prompts.py
+++ b/backend/app/services/ai/prompts/exam_generator_prompts.py
@@ -254,8 +254,11 @@ QUESTION_SCHEMA = {
                 "description": "知识点ID"
             },
             "correct": {
-                "type": "string",
-                "description": "正确答案"
+                "oneOf": [
+                    {"type": "string"},
+                    {"type": "array", "items": {"type": "string"}}
+                ],
+                "description": "正确答案（单选/判断/填空为字符串，多选为数组）"
             },
             "analysis": {
                 "type": "string",
@@ -298,3 +301,8 @@ MAX_DIFFICULTY_LEVEL = 5
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/knowledge_analysis_prompts.py b/backend/app/services/ai/prompts/knowledge_analysis_prompts.py
index ab918a3..4554e85 100644
--- a/backend/app/services/ai/prompts/knowledge_analysis_prompts.py
+++ b/backend/app/services/ai/prompts/knowledge_analysis_prompts.py
@@ -146,3 +146,8 @@ DEFAULT_KNOWLEDGE_TYPE = "理论知识"
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/practice_analysis_prompts.py b/backend/app/services/ai/prompts/practice_analysis_prompts.py
index 45f1298..964b69f 100644
--- a/backend/app/services/ai/prompts/practice_analysis_prompts.py
+++ b/backend/app/services/ai/prompts/practice_analysis_prompts.py
@@ -191,3 +191,8 @@ ANNOTATION_TAGS = [
 
 
 
+
+
+
+
+
diff --git a/backend/app/services/ai/prompts/practice_scene_prompts.py b/backend/app/services/ai/prompts/practice_scene_prompts.py
index df391cd..8a1158d 100644
--- a/backend/app/services/ai/prompts/practice_scene_prompts.py
+++ b/backend/app/services/ai/prompts/practice_scene_prompts.py
@@ -190,3 +190,8 @@ DEFAULT_DIFFICULTY = "intermediate"
 
 
 
+
+
+
+
+
diff --git a/backend/requirements-admin.txt b/backend/requirements-admin.txt
index 6ef4960..03d183e 100644
--- a/backend/requirements-admin.txt
+++ b/backend/requirements-admin.txt
@@ -18,3 +18,8 @@ watchfiles==0.21.0
 
 
 
+
+
+
+
+
diff --git a/backend/数据库架构-统一版.md b/backend/数据库架构-统一版.md
index 004c9e1..078a3a4 100644
--- a/backend/数据库架构-统一版.md
+++ b/backend/数据库架构-统一版.md
@@ -336,6 +336,7 @@ CREATE TABLE IF NOT EXISTS exam_mistakes (
     -- 核心关联字段（必需）
     user_id INT NOT NULL COMMENT '用户ID',
     exam_id INT NOT NULL COMMENT '考试ID',
+    round INT DEFAULT 1 COMMENT '考试轮次(1/2/3)',  -- 2026-01-27新增：标识错题产生于哪一轮
     question_id INT COMMENT '题目ID（AI生成的题目可能为空）',
     knowledge_point_id INT COMMENT '关联的知识点ID',
     
@@ -356,14 +357,15 @@ CREATE TABLE IF NOT EXISTS exam_mistakes (
     
     INDEX idx_user_id (user_id),
     INDEX idx_exam_id (exam_id),
+    INDEX idx_exam_round (exam_id, round),  -- 2026-01-27新增：支持按考试和轮次查询
     INDEX idx_knowledge_point_id (knowledge_point_id),
     INDEX idx_question_type (question_type)  -- 2025-10-12新增
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='错题记录表';
 ```
 
 **核心字段说明：**
-- 包含8个核心字段：`user_id`、`exam_id`、`question_id`、`knowledge_point_id`、`question_content`、`correct_answer`、`user_answer`、`question_type`
-- 简化设计，去除冗余字段（如错误次数、掌握状态等），聚焦核心功能
+- 包含9个核心字段：`user_id`、`exam_id`、`round`、`question_id`、`knowledge_point_id`、`question_content`、`correct_answer`、`user_answer`、`question_type`
+- `round` 字段（2026-01-27新增）：标识错题产生于哪一轮考试，用于多轮错题重考时只获取上一轮的错题
 - `question_id` 可为空：AI动态生成的题目可能不在 questions 表中
 - `knowledge_point_id` 可为空：用于关联知识点，支持错题重考功能
 - `question_type` 用于记录题型，支持错题按题型筛选和统计（2025-10-12新增）
diff --git a/frontend/src/api/exam.ts b/frontend/src/api/exam.ts
index 3839a7e..425ebee 100644
--- a/frontend/src/api/exam.ts
+++ b/frontend/src/api/exam.ts
@@ -98,6 +98,7 @@ export interface JudgeAnswerResponse {
  */
 export interface RecordMistakeRequest {
   exam_id: number
+  round: number  // 考试轮次(1/2/3)
   question_id?: number | null
   knowledge_point_id?: number | null
   question_content: string
@@ -154,9 +155,18 @@ export function recordMistake(data: RecordMistakeRequest) {
 
 /**
  * 获取错题记录
+ * @param examId 考试ID
+ * @param round 指定轮次（可选），用于获取特定轮次的错题
+ *              第2轮考试时传入round=1，获取第1轮的错题
+ *              第3轮考试时传入round=2，获取第2轮的错题
+ *              不传则获取该考试的所有错题
  */
-export function getMistakes(examId: number) {
-  return http.get<GetMistakesResponse>(`/api/v1/exams/mistakes?exam_id=${examId}`, {
+export function getMistakes(examId: number, round?: number) {
+  let url = `/api/v1/exams/mistakes?exam_id=${examId}`
+  if (round !== undefined) {
+    url += `&round=${round}`
+  }
+  return http.get<GetMistakesResponse>(url, {
     showLoading: false,
   })
 }
diff --git a/frontend/src/utils/cozeVoiceClient.ts b/frontend/src/utils/cozeVoiceClient.ts
index 2b6c91c..2d53c23 100644
--- a/frontend/src/utils/cozeVoiceClient.ts
+++ b/frontend/src/utils/cozeVoiceClient.ts
@@ -89,15 +89,16 @@ export class CozeVoiceClient {
         console.log('[CozeVoice] ✅ 已设置播放音量=1')
       }
       
-      // 6. 如果有场景提示词，发送初始消息
-      // 注意：参考代码不发送初始消息，而是等待用户先说话
-      // 但我们的场景需要AI先开场白，所以发送场景提示词
+      // ⚠️ 重要：不要在连接后发送场景提示词！
+      // SDK连接时默认设置 need_play_prologue: true，Bot会自动播放开场白
+      // 如果手动发送sendTextMessage会干扰开场白播放流程
+      // 场景信息应该在Bot的系统提示词中预设
       if (config.scenePrompt) {
-        this.client.sendTextMessage(config.scenePrompt)
-        console.log('[CozeVoice] ✅ 场景提示词已发送')
+        console.log('[CozeVoice] ⚠️ 场景提示词将通过Bot开场白播放，不手动发送')
+        console.log('[CozeVoice] 📝 场景提示词:', config.scenePrompt.substring(0, 100) + '...')
       }
       
-      console.log('[CozeVoice] 🎉 初始化完成，等待对话...')
+      console.log('[CozeVoice] 🎉 初始化完成，等待Bot开场白和用户对话...')
       
     } catch (error) {
       console.error('[CozeVoice] ❌ 连接失败:', error)
@@ -146,6 +147,10 @@ export class CozeVoiceClient {
     
     if (!event) return
     
+    // 🔍 调试：打印所有收到的事件（详细日志）
+    console.log('[CozeVoice] 📨 收到事件:', eventName, '-> event_type:', event.event_type)
+    console.log('[CozeVoice] 📨 事件数据:', JSON.stringify(event.data || {}).substring(0, 200))
+    
     switch (event.event_type) {
       // 用户开始说话 - 关闭扬声器本地回放（避免用户听到自己的声音）
       case 'input_audio_buffer.speech_started': {
@@ -221,6 +226,43 @@ export class CozeVoiceClient {
         this.emit('ai_speech_end', {})
         break
       }
+      
+      // 🔍 调试：捕获服务器错误事件
+      case 'error': {
+        console.error('[CozeVoice] ❌ 服务器返回错误:', event)
+        this.emit('error', { error: event.data?.error || '未知错误' })
+        break
+      }
+      
+      // 对话创建事件
+      case WebsocketsEventType.CONVERSATION_CHAT_CREATED: {
+        console.log('[CozeVoice] ✅ 对话创建成功')
+        break
+      }
+      
+      // 对话进行中
+      case 'conversation.chat.in_progress': {
+        console.log('[CozeVoice] 🔄 AI正在思考...')
+        break
+      }
+      
+      // 对话失败事件
+      case 'conversation.chat.failed': {
+        console.error('[CozeVoice] ❌ 对话失败:', event)
+        this.emit('error', { error: event.data?.last_error?.msg || '对话失败' })
+        break
+      }
+      
+      // 对话完成事件
+      case 'conversation.chat.completed': {
+        console.log('[CozeVoice] ✅ 对话完成')
+        break
+      }
+      
+      // 默认处理：记录未知事件
+      default: {
+        console.log('[CozeVoice] ⚠️ 未处理的事件类型:', event.event_type)
+      }
     }
   }
   
diff --git a/frontend/src/views/analysis/report.vue b/frontend/src/views/analysis/report.vue
index 36ba373..26571ad 100644
--- a/frontend/src/views/analysis/report.vue
+++ b/frontend/src/views/analysis/report.vue
@@ -256,6 +256,16 @@ const formatDuration = (seconds: number) => {
   return hours > 0 ? `${hours}小时${minutes}分` : `${minutes}分钟`
 }
 
+/**
+ * 格式化日期为 YYYY-MM-DD（使用本地时间，避免时区问题）
+ */
+const formatLocalDate = (date: Date): string => {
+  const year = date.getFullYear()
+  const month = String(date.getMonth() + 1).padStart(2, '0')
+  const day = String(date.getDate()).padStart(2, '0')
+  return `${year}-${month}-${day}`
+}
+
 /**
  * 加载成绩报告数据
  */
@@ -263,10 +273,10 @@ const loadReportData = async () => {
   try {
     const params: any = {}
     
-    // 添加时间范围参数
+    // 添加时间范围参数（使用本地时间格式化，避免UTC时区偏移问题）
     if (dateRange.value && dateRange.value.length === 2) {
-      params.start_date = dateRange.value[0].toISOString().split('T')[0]
-      params.end_date = dateRange.value[1].toISOString().split('T')[0]
+      params.start_date = formatLocalDate(dateRange.value[0])
+      params.end_date = formatLocalDate(dateRange.value[1])
     }
     
     const response = await getExamReport(params)
diff --git a/frontend/src/views/exam/practice.vue b/frontend/src/views/exam/practice.vue
index 69579b9..1d57601 100644
--- a/frontend/src/views/exam/practice.vue
+++ b/frontend/src/views/exam/practice.vue
@@ -341,8 +341,28 @@ const transformDifyQuestions = (difyQuestions: any[]): any[] => {
       const options = q.topic?.options || {}
       // 解析正确答案：支持 "A"、"A,B"、"A、B"、"A：xxx" 等多种格式
       const correctAnswerStr = String(q.correct || '')
-      // 提取正确答案中的选项字母（A、B、C、D等）
-      const correctLetters = correctAnswerStr.match(/[A-Da-d]/g)?.map(l => l.toUpperCase()) || []
+      
+      // 更精确地提取正确答案字母（避免误提取选项内容中的字母）
+      let correctLetters: string[] = []
+      
+      // 情况1：纯选项字母格式（如 "A", "B", "A,B", "A、B", "A,B,C"）
+      const pureLetterMatch = correctAnswerStr.trim().match(/^[A-Da-d]([,、\s]+[A-Da-d])*$/)
+      if (pureLetterMatch) {
+        correctLetters = correctAnswerStr.match(/[A-Da-d]/g)?.map(l => l.toUpperCase()) || []
+      } else {
+        // 情况2：选项字母+内容格式（如 "A：xxx" 或 "A: xxx"）
+        // 只提取开头的选项字母（可能有多个，如 "A,C：xxx"）
+        const prefixMatch = correctAnswerStr.match(/^([A-Da-d](?:[,、\s]*[A-Da-d])*)[：:：\s]/)
+        if (prefixMatch) {
+          correctLetters = prefixMatch[1].match(/[A-Da-d]/g)?.map(l => l.toUpperCase()) || []
+        } else {
+          // 情况3：只有开头字母（如 "A" 后面直接跟内容）
+          const firstLetterMatch = correctAnswerStr.match(/^([A-Da-d])/)
+          if (firstLetterMatch) {
+            correctLetters = [firstLetterMatch[1].toUpperCase()]
+          }
+        }
+      }
       
       console.log(`🔍 解析题目[${index + 1}] - correct: "${q.correct}", correctLetters: [${correctLetters.join(', ')}]`)
       
@@ -481,10 +501,11 @@ const loadQuestions = async () => {
     // 第一轮考试不传mistake_records参数
     // 第二、三轮考试传入上一轮的错题记录
     if (currentRound.value > 1) {
-      // 用同一个exam_id获取错题
-      console.log(`📋 获取第${currentRound.value - 1}轮错题记录 - exam_id: ${currentExamId.value}`)
+      // 用同一个exam_id获取上一轮的错题（传入round参数只获取上一轮的错题）
+      const previousRound = currentRound.value - 1
+      console.log(`📋 获取第${previousRound}轮错题记录 - exam_id: ${currentExamId.value}, round: ${previousRound}`)
       
-      const mistakesRes: any = await getMistakes(currentExamId.value)
+      const mistakesRes: any = await getMistakes(currentExamId.value, previousRound)
       
       console.log('getMistakes原始响应:', mistakesRes)
       console.log('getMistakes响应结构:', {
@@ -785,6 +806,7 @@ const recordWrongAnswer = async () => {
   try {
     await recordMistake({
       exam_id: currentExamId.value,
+      round: currentRound.value,  // 记录当前轮次
       question_id: null,  // AI生成的题目没有question_id
       knowledge_point_id: q.knowledge_point_id || null,
       question_content: q.title,
diff --git a/frontend/src/views/trainee/chat-course.vue b/frontend/src/views/trainee/chat-course.vue
index d1bb224..4a16317 100644
--- a/frontend/src/views/trainee/chat-course.vue
+++ b/frontend/src/views/trainee/chat-course.vue
@@ -10,7 +10,7 @@
           <h2 class="course-title">{{ courseInfo.title }}</h2>
           <span class="powered-by">
             <el-icon><Connection /></el-icon>
-            由 Dify 对话流驱动
+            智能对话助手
           </span>
         </div>
         <el-button link @click="clearChat">
@@ -512,19 +512,37 @@ const scrollToBottom = async () => {
 const loadCourseInfo = async () => {
   try {
     const courseId = parseInt(courseInfo.value.id)
-    if (isNaN(courseId)) {
+    if (isNaN(courseId) || courseId <= 0) {
       console.warn('无效的课程ID:', courseInfo.value.id)
       courseInfo.value.title = '未知课程'
       return
     }
     const res: any = await getCourseDetail(courseId)
-    // API 返回格式是 { code: 200, data: { name: "...", ... } }
-    if (res.code === 200 && res.data) {
-      courseInfo.value.title = res.data.title || res.data.name || '未命名课程'
+    console.log('课程详情API响应:', res)
+    
+    // 兼容不同的响应格式
+    // 格式1: { code: 200, data: { name: "...", ... } }
+    // 格式2: 直接返回课程对象 { name: "...", ... }
+    let courseData = res
+    if (res.code !== undefined && res.data) {
+      // 标准响应格式
+      if (res.code === 200) {
+        courseData = res.data
+      } else {
+        console.warn('获取课程详情失败:', res.message || '未知错误')
+        courseInfo.value.title = '未知课程'
+        return
+      }
+    }
+    
+    // 从课程数据中提取名称
+    const courseName = courseData?.title || courseData?.name
+    if (courseName) {
+      courseInfo.value.title = courseName
       console.log('课程详情已加载:', courseInfo.value.title)
     } else {
-      console.warn('获取课程详情失败:', res.message || '未知错误')
-      courseInfo.value.title = '未知课程'
+      console.warn('课程数据中缺少名称字段:', courseData)
+      courseInfo.value.title = '未命名课程'
     }
   } catch (error: any) {
     console.error('加载课程详情失败:', error)
diff --git a/frontend/src/views/trainee/course-detail.vue b/frontend/src/views/trainee/course-detail.vue
index 4210028..a22a64e 100644
--- a/frontend/src/views/trainee/course-detail.vue
+++ b/frontend/src/views/trainee/course-detail.vue
@@ -321,8 +321,7 @@ const pdfScaleStyle = computed(() => {
   const scale = 1 / pdfRenderScale.value
   return {
     transform: `scale(${scale})`,
-    transformOrigin: 'top left',
-    width: `${100 * pdfRenderScale.value}%`
+    transformOrigin: 'top center'
   }
 })
 
@@ -911,6 +910,7 @@ onUnmounted(() => {
               padding: 10px 20px;
               background: #fff;
               border-bottom: 1px solid #e4e7ed;
+              flex-shrink: 0;
               
               .page-controls,
               .zoom-controls {
@@ -933,10 +933,12 @@ onUnmounted(() => {
               padding: 20px;
               display: flex;
               justify-content: center;
+              align-items: flex-start;
               
               // 高清渲染缩放容器
               .pdf-scale-wrapper {
-                display: inline-block;
+                display: flex;
+                justify-content: center;
                 
                 :deep(.vue-pdf-embed) {
                   box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
diff --git a/frontend/src/views/trainee/growth-path.vue b/frontend/src/views/trainee/growth-path.vue
index 1dc0196..7681c5f 100644
--- a/frontend/src/views/trainee/growth-path.vue
+++ b/frontend/src/views/trainee/growth-path.vue
@@ -78,7 +78,7 @@
         <div class="header-actions">
           <el-button 
             type="primary" 
-            :loading="loadingRecommendations"
+            :loading="analyzing"
             @click="refreshRecommendations"
             class="refresh-btn"
           >
@@ -405,7 +405,6 @@ const abilityFeedback = ref<AbilityFeedback[]>([])
 
 // AI 分析和推荐相关
 const analyzing = ref(false)
-const loadingRecommendations = ref(false)
 const selectedPriority = ref('all')
 
 // 计算属性：过滤后的课程
@@ -723,81 +722,11 @@ const analyzeSmartBadgeData = async () => {
 
 /**
  * 刷新AI推荐课程
+ * 重新调用AI分析接口，获取最新的课程推荐
  */
 const refreshRecommendations = async () => {
-  loadingRecommendations.value = true
-  
-  try {
-    // 模拟AI推荐算法
-    await new Promise(resolve => setTimeout(resolve, 1500))
-    
-    // 根据能力评估结果生成推荐
-    const weakPoints = abilityData.value
-      .filter(item => item.value < 85)
-      .sort((a, b) => a.value - b.value)
-      .slice(0, 3)
-    
-    // 更新推荐课程（基于薄弱环节）
-    const newRecommendations = []
-    
-    if (weakPoints.some(p => p.name === '沟通技巧')) {
-      newRecommendations.push({
-        id: 1,
-        name: '美容咨询与沟通技巧',
-        description: '提升与客户的沟通能力，学习专业的美容咨询技巧',
-        duration: 8,
-        difficulty: 'medium',
-        learnerCount: 156,
-        priority: 'high',
-        targetWeakPoints: ['沟通技巧'],
-        expectedImprovement: 12,
-        matchScore: 95,
-        progress: 85,
-        examPassed: false
-      })
-    }
-    
-    if (weakPoints.some(p => p.name === '应变能力')) {
-      newRecommendations.push({
-        id: 2,
-        name: '皮肤问题识别与处理',
-        description: '学习识别常见皮肤问题，掌握针对性的护理和治疗方案',
-        duration: 12,
-        difficulty: 'hard',
-        learnerCount: 89,
-        priority: 'medium',
-        targetWeakPoints: ['应变能力'],
-        expectedImprovement: 15,
-        matchScore: 88,
-        progress: 95,
-        examPassed: true
-      })
-    }
-    
-    if (weakPoints.some(p => p.name === '安全意识')) {
-      newRecommendations.push({
-        id: 3,
-        name: '轻医美项目与效果管理',
-        description: '深入了解各种轻医美项目，掌握效果评估和管理方法',
-        duration: 16,
-        difficulty: 'hard',
-        learnerCount: 234,
-        priority: 'medium',
-        targetWeakPoints: ['安全意识'],
-        expectedImprovement: 10,
-        matchScore: 82,
-        progress: 60,
-        examPassed: false
-      })
-    }
-    
-    recommendedCourses.value = newRecommendations
-    
-  } catch (error) {
-    ElMessage.error('获取推荐课程失败')
-  } finally {
-    loadingRecommendations.value = false
-  }
+  // 直接调用AI分析智能工牌数据的方法，复用已有逻辑
+  await analyzeSmartBadgeData()
 }
 
 /**