An Agent doesn't get everything done in one breath—it goes one small step at a time, and at each step asks itself three things:
想(Think):现在该干嘛? 做(Act):调用某个工具(搜索 / 查数据库 / 算一下) 看(Observe):拿到结果,离目标更近了吗? → 没完成就回到“想”,再来一轮