PlayWorld: Learning Robot World Models from Autonomous Play. - Tenny Yin; Zhiting Mei; Zhonghe Zheng; Miyu Yamane; David Wang; Jade Sceats; Samuel M. Bateman; Lihan Zha; Apurva Badithela; Ola Shorinwa; Anirudha Majumdar (CoRR, 2026)