"""记忆管理模块的 Pydantic 请求/响应模型。"""

from pydantic import BaseModel, ConfigDict
from datetime import datetime


class MemorySessionOut(BaseModel):
    """记忆会话概要响应体。"""
    session_id: str
    flow_id: str
    flow_name: str
    last_active_at: str


class ConversationMessage(BaseModel):
    """单条对话消息。"""
    role: str
    content: str
    ts: str = ""


class ClearSessionRequest(BaseModel):
    """清除会话请求体。"""
    session_id: str