SignVLA: A Gloss-Free Vision-Language-Action Framework for Real-Time Sign Language-Guided Robotic Manipulation. - Xinyu Tan; Ningwei Bai; Harry Gardener; Zhengyang Zhong; Luoyu Zhang; Liuhaichen Yang; Zhekai Duan; Monkgogi Galeitsiwe; Zezhi Tang (CoRR, 2026)