RobotSmith: Generative Robotic Tool Design for Acquisition of Complex Manipulation Skills - Lin, Chunru; Yuan, Haotian; Wang, Yian; Qiu, Xiaowen; Wang, Tsun-Hsuan Johnson; Guo, Minghao; Wang, Bohan; Narang, Yashraj; Fox, Dieter; Gan, Chuang (Advances in Neural Information Processing Systems, 2025)