Probing Einstein–Maxwell-scalar black hole via thin accretion disks and shadows with EHT observations of M87* and Sgr A*Yingdong Wu, Ziqiang Cai, Zhenglong Ban, Haiyuan Feng and Wei-Qiang ChenEur. Phys. J. C, 85 9 (2025) 1085DOI: https://doi.org/10.1140/epjc/s10052-025-14831-5