The iOS app refused any subscription to an Apple ID that ever subscribed, so a lapsed subscriber could never subscribe again in the app. Core now tells the apps each subscription's store reference (BadgeSubscription.transactionRef, optional in JSON), and the iOS gate opens a subscription card only when every earlier subscription of the Apple ID is the active profile's newest purchase, retired, of the card's badge: the one charge core resumes. Kotlin gets the model field only, as Play gives a resubscription a new token and needs no gate.
Run: 011-subscription-resume, slice S2b