MentraSuite: Post-Training Large Language Models for Mental Health Reasoning and Assessment. - Mengxi Xiao; Kailai Yang; Pengde Zhao; Enze Zhang; Ziyan Kuang; Zhiwei Liu 003; Weiguang Han; Shu Liao; Lianting Huang; Jinpeng Hu; Min Peng 002; Qianqian Xie; et al. (CoRR, 2025)