From Debate to Decision: Conformal Social Choice for Safe Multi-Agent Deliberation. - Mengdie Flora Wang; Haochen Xie; Guanghui Wang; Aijing Gao; Guang Yang; Ziyuan Li; Qucy Wei Qiu; Fangwei Han; Hengzhi Qiu; Yajing Huang; Bing Zhu; Jae Oh Woo (CoRR, 2026)