feat: stabilize rag chat conversations and auto title sync

fastapi_modules/fastapi_leaudit/domian/Dto/ragChatDto.py

@@ -13,3 +13,7 @@ class RagConversationRenameDTO(BaseModel):
 
 class RagMessageFeedbackDTO(BaseModel):
     rating: str | None = Field(None, description="反馈: like/dislike/None")
+
+
+class RagStopMessageDTO(BaseModel):
+    taskId: str | None = Field(None, description="流式任务ID")

fastapi_modules/fastapi_leaudit/domian/vo/ragChatVo.py

@@ -17,8 +17,10 @@ class RagConversationItemVO(BaseModel):
     id: str = Field(..., description="会话ID")
     name: str = Field(..., description="会话名称")
     introduction: str = Field("", description="会话简介")
+    titleSource: str = Field("default", description="标题来源: default/auto/manual")
     createdAt: int = Field(0, description="创建时间戳")
     updatedAt: int = Field(0, description="更新时间戳")
+    lastMessageAt: int = Field(0, description="最后一条消息完成时间戳")
 
 
 class RagConversationPageVO(BaseModel):
@@ -34,6 +36,8 @@ class RagMessageItemVO(BaseModel):
     answer: str = Field(...)
     feedback: dict | None = Field(None)
     retrieverResources: list[dict] | None = Field(None)
+    suggestedQuestions: list[str] = Field(default_factory=list)
+    status: str = Field("completed")
     createdAt: int = Field(0)