How Much Do We Understand Ce L3 XANES? Ab Initio Insights into Configuration-Specific Screening at the Multiplet--Continuum Frontier

How can local multiplet signatures, collective core-hole screening, and an extended photoelectron be reconciled in Ce $L_3$ x-ray absorption near-edge spectra? Motivated by the question raised by Kvashnina [Chem. Eur. J. 30, e202400755 (2024)], we address this challenge using XSpectruplet, which cou