feat: 初始化考培练系统项目

- 从服务器拉取完整代码
- 按框架规范整理项目结构
- 配置 Drone CI 测试环境部署
- 包含后端(FastAPI)、前端(Vue3)、管理端

技术栈: Vue3 + TypeScript + FastAPI + MySQL

backend/app/services/ai/coze/client_backup.py

@@ -0,0 +1,44 @@
+"""Coze客户端（临时模拟，等Agent-Coze实现后替换）"""
+import logging
+from typing import Dict, Any, Optional
+
+logger = logging.getLogger(__name__)
+
+
+class CozeClient:
+    """
+    Coze客户端模拟类
+    TODO: 等Agent-Coze模块实现后，这个类将被真实的Coze网关客户端替换
+    """
+
+    async def create_conversation(
+        self, bot_id: str, user_id: str, meta_data: Optional[Dict[str, Any]] = None
+    ) -> Dict[str, Any]:
+        """创建会话（模拟）"""
+        logger.info(f"模拟创建Coze会话: bot_id={bot_id}, user_id={user_id}")
+
+        # 返回模拟的会话信息
+        return {
+            "conversation_id": f"mock_conversation_{user_id}_{bot_id[:8]}",
+            "bot_id": bot_id,
+            "status": "active",
+        }
+
+    async def send_message(
+        self, conversation_id: str, content: str, message_type: str = "text"
+    ) -> Dict[str, Any]:
+        """发送消息（模拟）"""
+        logger.info(f"模拟发送消息到会话 {conversation_id}: {content[:50]}...")
+
+        # 返回模拟的消息响应
+        return {
+            "message_id": f"mock_msg_{conversation_id[:8]}",
+            "content": f"这是对'{content[:30]}...'的模拟回复",
+            "role": "assistant",
+        }
+
+    async def end_conversation(self, conversation_id: str) -> Dict[str, Any]:
+        """结束会话（模拟）"""
+        logger.info(f"模拟结束会话: {conversation_id}")
+
+        return {"status": "completed", "conversation_id": conversation_id}