The GALAH survey: Data release 4 - Buder, Sven; Kos, Janez; Wang, Xi Ella; McKenzie, Madeleine; Howell, Madeleine; Martell, Sarah; Hayden, Michael R.; Zucker, Daniel B.; Nordlander, Thomas; Montet, Benjamin; Traven, Gregor; Bland-Hawthorn, Joss; et al. (Publications Astronomical Society of Australia, 2025)