[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/Services/ApiModels.swift

@@ -30,6 +30,8 @@ struct CustomerProfile: Decodable {
     let profilePicture: String?
     let favorites: [String]?
     let addressBook: [CustomerAddress]?
+    let notificationsEnabled: Bool?
+    let faceIdEnabled: Bool?
 
     enum CodingKeys: String, CodingKey {
         case id
@@ -39,6 +41,8 @@ struct CustomerProfile: Decodable {
         case profilePicture
         case favorites
         case addressBook = "address_book"
+        case notificationsEnabled
+        case faceIdEnabled
     }
 }