Thanks! By the way, you can use client-side user accounts for custom decks as well. Just save user cards to local storage and allow the user to import/export th

Thanks! By the way, you can use client-side user accounts for custom decks as well. Just save user cards to local storage and allow the user to import/export their cards to a file by clicking a button. (In my opinion, local storage alone provides sufficient persistence for most user data, like which cards should be on which piles, but if the user goes through the trouble of creating a custom deck, we want to offer import/export as a backup feature, and also to be able to move decks across devices.)