74hc4053mt: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding)
74hc4053mt: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero
74hc4053mt: laser-etched CAD + chip hero (factory 2.0.0 backfill)
Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout")
74hc4053mt: hero re-rendered with iso-front (part number upright)
74hc4053mt: laser-etched CAD + chip hero (factory 2.0.0 backfill)
74hc4053mt: stamp component.logic (74HC4053) from component-ocean
74hc4053mt: publish the laser-etched STEP alongside the bare one
74hc4053mt: factory component page (tier=lcsc)
Initial commit: component/74hc4053mt