Push Notification Patterns

iOS-related routing: for updating a Live Activity / Dynamic Island via an APNs push (content-state), use activitykit; for pushing widget timeline reloads, use widgetkit. This skill covers the FCM/APNs delivery + payload layer.

Android / Firebase Cloud Messaging

Firebase Setup

Add google-services.json to the app/ directory and configure dependencies:

// build.gradle.kts (project)
plugins {
    id("com.google.gms.google-services") version "4.5.0" apply false
}