sdnt2012x473j3950htf: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding)
sdnt2012x473j3950htf: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero
Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout")
sdnt2012x473j3950htf: laser-etched CAD + chip hero (factory 2.0.0 backfill)
sdnt2012x473j3950htf: backfill missing artifacts (variants)
sdnt2012x473j3950htf: publish the laser-etched STEP alongside the bare one
sdnt2012x473j3950htf: viewers
sdnt2012x473j3950htf: factory component page (tier=lcsc)
Initial commit: component/sdnt2012x473j3950htf