[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/PediFoodsApp.swift

@@ -18,7 +18,15 @@ public final class PediFoodsAppDelegate: Sendable {
     private init() {}
 
     public func onInit() { logger.debug("onInit") }
-    public func onLaunch() { logger.debug("onLaunch") }
+    public func onLaunch() {
+        logger.debug("onLaunch")
+        Task { @MainActor in
+            PushNotificationCoordinator.shared.startObservingDeviceToken()
+            PushNotificationCoordinator.shared.becomeNotificationCenterDelegate()
+            await PushNotificationCoordinator.shared.refreshRegistrationIfAuthorized()
+            await PushNotificationCoordinator.shared.syncCustomerAttributes()
+        }
+    }
     public func onResume() {
         logger.debug("onResume")
         NotificationCenter.default.post(name: .appDidResume, object: nil)