Nexus : An Agentic Framework for Time Series Forecasting. - Sarkar Snigdha Sarathi Das; Palash Goyal; Mihir Parmar; Nanyun Peng 002; Vishy Tirumalashetty; Chun-Liang Li; Rui Zhang; Jinsung Yoon; Tomas Pfister (CoRR, 2026)