Gate 1 screening results for D019 Mn3Ga (P63/mmc). Second hexagonal structure family in the bias-correction protocol. Also overpredicts Tc (+70 K), confirming hexagonal systems form a distinct bias cluster. Moment underprediction is notable at -1.98 uB/cell. e_hull shows same false-flag pattern as all other families.
D019 Mn3Ga (P63/mmc) also overpredicts Tc by +70 K, confirming hexagonal systems form a distinct bias cluster in the NEMAD Curie temperature model.