Give isolated sessions (cron jobs, sub-agents, event handlers) full conversation context from your main session using sessions_history. Run cheap background tasks (Haiku) with expensive context (Sonnet-level awareness) — best of both worlds.

通过 sessions_history，为独立会话（如定时任务、子代理、事件处理器）提供主会话的完整对话上下文。使用廉价的后台任务（Haiku）执行需要昂贵上下文（Sonnet 级别认知）的操作——兼顾两者的最佳优势