docs: update design docs for general chat
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@@ -910,6 +910,112 @@ Response: 200 OK
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---
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### 9. 通用对话模块(智能问答)
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**功能**: 提供无项目、无智能体概念的纯AI对话功能,支持可选的@知识库引用
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#### 9.1 发送消息(流式输出)
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```http
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POST /api/v1/chat/stream
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Content-Type: application/json
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Request:
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{
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"content": "你好,介绍一下自己",
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"modelType": "deepseek-v3",
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"knowledgeBaseIds": ["kb-uuid-1", "kb-uuid-2"], // 可选
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"conversationId": "conv-uuid" // 可选,续接已有对话
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}
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Response: 200 OK (Server-Sent Events)
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Content-Type: text/event-stream
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data: {"content":"你","usage":null}
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data: {"content":"好","usage":null}
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data: {"content":"!","usage":null}
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data: {"content":"我","usage":null}
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...
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data: [DONE]
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```
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**参数说明:**
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- `content` - 用户消息内容(必填)
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- `modelType` - 使用的模型(必填):deepseek-v3 | qwen3-72b | gemini-pro
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- `knowledgeBaseIds` - 知识库ID数组(可选)
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- `conversationId` - 对话ID(可选,新对话时不传)
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**响应说明:**
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- 使用SSE(Server-Sent Events)流式返回
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- 每个chunk包含:`content`(增量内容)、`usage`(token统计)
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- 最后发送 `data: [DONE]` 表示完成
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---
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#### 9.2 获取对话列表
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```http
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GET /api/v1/chat/conversations
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Authorization: Bearer {token}
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Response: 200 OK
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{
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"success": true,
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"data": [
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{
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"id": "conv-uuid",
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"userId": "user-uuid",
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"title": "关于骨质疏松的讨论",
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"modelName": "deepseek-v3",
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"createdAt": "2025-10-11T10:00:00.000Z",
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"updatedAt": "2025-10-11T10:30:00.000Z"
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}
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]
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}
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```
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**响应说明:**
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- 按 `updatedAt` 降序排序
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- 最多返回50条
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- 不包括已删除的对话(deleted_at != null)
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---
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#### 9.3 删除对话
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```http
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DELETE /api/v1/chat/conversations/:id
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Authorization: Bearer {token}
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Response: 200 OK
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{
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"success": true,
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"message": "删除成功"
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}
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```
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**说明:**
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- 软删除,设置 `deleted_at` 字段
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- 级联删除所有消息
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- 不可恢复
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---
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### 通用对话 vs 项目对话
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| 特性 | 通用对话(/chat) | 项目对话(/conversations) |
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|------|------------------|---------------------------|
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| **概念** | 无项目/智能体 | 基于项目和智能体 |
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| **使用场景** | 快速提问、知识库问答 | 结构化研究流程 |
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| **上下文** | 纯对话历史 | 项目背景 + 智能体角色 + 对话历史 |
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| **知识库** | 可选@引用 | 可选@引用 |
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| **System Prompt** | 通用AI助手 | 专业智能体角色 |
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| **数据表** | general_conversations | conversations |
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---
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## 错误处理
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### 错误代码规范
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