When this page is installed as a PWA - you can open the PWA - you will get this prompt:
Then the phone prompts:
Success
Appears under settings
I would also like to see that any subdomain stays within the PWA - so that the "Done" prompt doesn't appear. This should be set up for any subdomain - *.jaimespace.com
Test links:
https://site1.jaimespace.com
https://site2.jaimespace.com