No Loss, No Gain: Gated Refinement and Adaptive Compression for Prompt Optimization - Shi, Wenhang; Chen, Yiren; Bian, Shuqing; Zhang, Xinyi; Tang, Kai; Hu, Pengfei; Zhao, Zhe; LU, WEI; Du, Xiaoyong (Advances in Neural Information Processing Systems, 2025)