package domain import "time" // AiChatSession AI 助手会话 type AiChatSession struct { UserId string `bson:"userId"` SessionId string `bson:"sessionId"` Title string `bson:"title"` IsActive bool `bson:"isActive"` CreatedAt time.Time `bson:"createdAt"` LastActive time.Time `bson:"lastActive"` UpdatedAt time.Time `bson:"updatedAt"` }