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/models.py

@@ -0,0 +1,136 @@
+"""
+Coze 服务数据模型
+"""
+
+from typing import Optional, List, Dict, Any, Literal
+from datetime import datetime
+from pydantic import BaseModel, Field
+from enum import Enum
+
+
+class SessionType(str, Enum):
+    """会话类型"""
+
+    COURSE_CHAT = "course_chat"  # 课程对话
+    TRAINING = "training"  # 陪练会话
+    EXAM = "exam"  # 考试会话
+
+
+class MessageRole(str, Enum):
+    """消息角色"""
+
+    USER = "user"
+    ASSISTANT = "assistant"
+    SYSTEM = "system"
+
+
+class ContentType(str, Enum):
+    """内容类型"""
+
+    TEXT = "text"
+    CARD = "card"
+    IMAGE = "image"
+    FILE = "file"
+
+
+class StreamEventType(str, Enum):
+    """流式事件类型"""
+
+    MESSAGE_START = "conversation.message.start"
+    MESSAGE_DELTA = "conversation.message.delta"
+    MESSAGE_COMPLETED = "conversation.message.completed"
+    ERROR = "error"
+    DONE = "done"
+
+
+class CozeSession(BaseModel):
+    """Coze 会话模型"""
+
+    session_id: str = Field(..., description="会话ID")
+    conversation_id: str = Field(..., description="Coze对话ID")
+    session_type: SessionType = Field(..., description="会话类型")
+    user_id: str = Field(..., description="用户ID")
+    bot_id: str = Field(..., description="Bot ID")
+    created_at: datetime = Field(default_factory=datetime.now, description="创建时间")
+    ended_at: Optional[datetime] = Field(None, description="结束时间")
+    metadata: Dict[str, Any] = Field(default_factory=dict, description="元数据")
+
+    class Config:
+        json_encoders = {datetime: lambda v: v.isoformat()}
+
+
+class CozeMessage(BaseModel):
+    """Coze 消息模型"""
+
+    message_id: str = Field(..., description="消息ID")
+    session_id: str = Field(..., description="会话ID")
+    role: MessageRole = Field(..., description="消息角色")
+    content: str = Field(..., description="消息内容")
+    content_type: ContentType = Field(ContentType.TEXT, description="内容类型")
+    created_at: datetime = Field(default_factory=datetime.now, description="创建时间")
+    metadata: Dict[str, Any] = Field(default_factory=dict, description="元数据")
+
+    class Config:
+        json_encoders = {datetime: lambda v: v.isoformat()}
+
+
+class StreamEvent(BaseModel):
+    """流式事件模型"""
+
+    event: StreamEventType = Field(..., description="事件类型")
+    data: Dict[str, Any] = Field(..., description="事件数据")
+    message_id: Optional[str] = Field(None, description="消息ID")
+    content: Optional[str] = Field(None, description="内容")
+    content_type: Optional[ContentType] = Field(None, description="内容类型")
+    role: Optional[MessageRole] = Field(None, description="角色")
+    error: Optional[str] = Field(None, description="错误信息")
+
+
+class CreateSessionRequest(BaseModel):
+    """创建会话请求"""
+
+    session_type: SessionType = Field(..., description="会话类型")
+    user_id: str = Field(..., description="用户ID")
+    course_id: Optional[str] = Field(None, description="课程ID (课程对话时必需)")
+    training_topic: Optional[str] = Field(None, description="陪练主题 (陪练时可选)")
+    metadata: Dict[str, Any] = Field(default_factory=dict, description="额外元数据")
+
+
+class CreateSessionResponse(BaseModel):
+    """创建会话响应"""
+
+    session_id: str = Field(..., description="会话ID")
+    conversation_id: str = Field(..., description="Coze对话ID")
+    bot_id: str = Field(..., description="Bot ID")
+    created_at: datetime = Field(..., description="创建时间")
+
+    class Config:
+        json_encoders = {datetime: lambda v: v.isoformat()}
+
+
+class SendMessageRequest(BaseModel):
+    """发送消息请求"""
+
+    session_id: str = Field(..., description="会话ID")
+    content: str = Field(..., description="消息内容")
+    file_ids: List[str] = Field(default_factory=list, description="附件ID列表")
+    stream: bool = Field(True, description="是否流式响应")
+
+
+class EndSessionRequest(BaseModel):
+    """结束会话请求"""
+
+    reason: Optional[str] = Field(None, description="结束原因")
+    feedback: Optional[Dict[str, Any]] = Field(None, description="用户反馈")
+
+
+class EndSessionResponse(BaseModel):
+    """结束会话响应"""
+
+    session_id: str = Field(..., description="会话ID")
+    ended_at: datetime = Field(..., description="结束时间")
+    duration_seconds: int = Field(..., description="会话时长(秒)")
+    message_count: int = Field(..., description="消息数量")
+
+    class Config:
+        json_encoders = {datetime: lambda v: v.isoformat()}