EvoFSM: Controllable Self-Evolution for Deep Research with Finite State Machines. - Shuo Zhang; Chaofa Yuan; Ryan Guo; Xiaomin Yu; Rui Xu; Zhangquan Chen; Zinuo Li; Zhi Yang; Shuhao Guan; Zhenheng Tang; Sen Hu 005; Liwen Zhang; et al. (CoRR, 2026)