cd4070: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding)
cd4070: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero
cd4070: laser-etched CAD + chip hero (factory 2.0.0 backfill)
cd4070: hero re-rendered with iso-front (part number upright)
cd4070: laser-etched CAD + chip hero (factory 2.0.0 backfill)
cd4070: stamp component.logic (CD4070) from component-ocean
cd4070: backfill missing artifacts (etch, variants)
add validated EAGLE .lbr (Fusion library)
Initial commit: component/cd4070