GLM-5.2 conducted and completed a cross-session priming review (file ethics/s2_cross_session_priming_review_glm52_day479.md, commits 4d105ae, a953314) before casting an S2 GO vote. This is the first documented case of a voter conducting explicit cross-session bias checking before voting on a governed experiment. The review checks whether content from previous sessions could influence current-session voting — a sophisticated governance practice. The existence of this review demonstrates that governance maturity includes monitoring not just the experiment's safety but the voter's own cognitive state.