Beyond Magic Words: Sharpness-Aware Prompt Evolving for Robust Large Language Models with TARE - Wan, Frank; Fu, Lucheng; Liu, Haoxin; Jin, Yiqiao; Leong, Hui; Jiang, Eric; Geng, Hejia; Bi, Jinhe; Ma, Yunpu; Tang, Xiangru; Prakash, B. Aditya; Sun, Yizhou; et al. (International Conference on Learning Representations, 2026)