M2-VLA: Boosting Vision-Language Models for Generalizable Manipulation via Layer Mixture and Meta-Skills. - Siyao Xiao; Yuhong Zhang; Zhifang Liu; Zihan Gao; Jingye Zhang; Sinwai Choo; Dake Zhong; Mengzhe Wang; Xiao Lin; Xianfeng Zhou; Jia Jia; Haoqian Wang (CoRR, 2026)