[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/Views/Main/ProfileView.swift

@@ -181,6 +181,11 @@ struct ProfileView: View {
                 openOrders = true
             }
         }
+        .onChange(of: appState.pendingOrderDeepLink) { _, val in
+            if val != nil {
+                openOrders = true
+            }
+        }
     }
 
     private var header: some View {