[push/opt-in-prompts] Implement push notifications client integration

Build the full client half of docs/api/push-notifications-integration-guide.md:
OS permission + APNs device-token registration and pipeline wiring, profile
notifications/biometric-login toggles on the Ver Perfil screen reflecting
server truth, order-tracking opt-in fallback prompt, profile-cache refresh
on every mutation, a Notification Service Extension for rich/image push,
the Push Notifications capability, targeting-attributes sync, campaign open
tracking, and tap-to-order deep linking with foreground notification display.

Sources/PediFoods/State/AppState.swift

@@ -10,6 +10,10 @@ struct AppState {
     var homeFilters = HomeFiltersState()
     var activeModal: AppModal? = nil
     var shouldNavigateToOrders: Bool = false
+    /// Set when a push tap (§6 of the push notifications guide) targets a
+    /// specific order — consumed once by `OrdersView`, which routes to it via
+    /// `OrderEntryDestinationView` and clears it.
+    var pendingOrderDeepLink: OrderRouteContext? = nil
 }
 
 enum FeatureFlagValue: Codable, Equatable {
@@ -94,6 +98,8 @@ struct ProfileState {
     var phone: String = ""
     var profilePicture: String = ""
     var cpf: String = ""
+    var notificationsEnabled: Bool = false
+    var faceIdEnabled: Bool = false
 }
 
 struct AddressState {