Sorry, should have included that: https://developers.google.com/web/android/trusted-web-activi...

Basically: It’s a way to verify that an app represents your site and then that app can open up the PWA inside it (a bit tricky to explain, but it’s great if one wants to be in the store and/or have an existing non-PWA app that one wants to upgrade to a PWA)

More info: https://firt.dev/pwa-playstore