Обеспечивает ли Firebase автоматическую доставку push-уведомлений в мобильное приложение без дополнительного вмешательства со стороны разработчика?

Firebase Cloud Messaging (FCM) provides infrastructure for sending push notifications but does not ensure their automatic delivery without developer involvement.

The developer needs to:

• Register the application to receive a device token.
• Configure a server or use the Firebase console to send messages.
• Handle the received notifications in the app (for example, display them to the user or execute logic).

FCM guarantees message delivery to the device if it is available, but the logic for processing and displaying notifications must be implemented in the app independently.

Thus, Firebase simplifies sending and delivery but does not eliminate the need for programmatic support of push notifications in the mobile app.