Wiring the Home Screen

From model to cards

HomeView owns its model the standard way — @State private var model = HomeViewModel() plus .task { await model.load() } — and then simply reads the derived facts. The centerpiece is one branch: if model.upcoming has a value, show the dark NextWalkCard; otherwise show the EmptyWalkCard inviting you to book.

That's an if let living inside body — legal because body is @ViewBuilder, as you learned two lessons ago. And the unwrapped up is the named tuple from last lesson: the card reads up.booking and up.walker by field name.