Family: drop links to the retired chip-gate / card-negative datasets, add day-3

card: 225->318 frames, gen4 trend

grow holdout 225->318: +93 held-out day-3 deck-spread frames (gen4/KAS-52) (part 3)

grow holdout 225->318: +93 held-out day-3 deck-spread frames (gen4/KAS-52) (part 2)

grow holdout 225->318: +93 held-out day-3 deck-spread frames (gen4/KAS-52)

YOLO data.yaml

Dataset card (CC-BY-NC-4.0)

initial commit