Optimizing summer heat mitigation and equity in urban residential communities: threshold-based evidence from 4678 communities in Chengdu - Yixu Zeng; Langong Hou; Ying Tu; Xin Chen; Jiyao Zhao; Sheng Xu; Hanguang Yu; Yi Zhou; Shengbiao Wu; Tao Liu (Sustainable Cities and Society, 2026)