KAT-Coder Technical Report. - Zizheng Zhan; Ken Deng; Jinghui Wang; Xiaojiang Zhang; Huaixi Tang; Minglei Zhang; Zhiyi Lai; Haoyang Huang; Wen Xiang; Kun Wu; Wenhao Zhuang; Shaojie Wang; et al. (CoRR, 2025)