Observational Comparison Note 01: Abell 2744-QSO1 and High-Redshift Black-Hole Primacy

A dated observational comparison note linking the prediction record "A CHB Prediction for High-Redshift Black-Hole-Dominated Primitive Hosts" (doi 10.5281/zenodo.19338258) to the direct dynamical black-hole mass measurement of Abell 2744-QSO1 reported by Juodžbalis et al. (2026, Nature 653, 1017). The note records QSO1 as a directly measured object-level match to the predicted high-redshift black-hole-dominated primitive-host regime, mapped onto the three pre-registered comparison quantities R_BH*, I_imm and A_dev. The prediction record is left unchanged. The population-level test across an assembled sample is identified as the next operational target.