Any support for desktop notifications, or toolbar-less "app mode"?

[e-t-l]

Cool project! Couple quick questions?

Does this support desktop notifications?
https://www.kenherbert.dev/browser-notification-tester is a website that sends a test notification from browser to desktop. It's an easy way to check if it works.

Also, does this have any equivalent to Chromium's app mode, e.g. like running chrome.exe --app=[URL]?

(My goal with both of these is to find a very lightweight browser that I can use to make pseudo-PWAs of arbitrary websites that don't have proper PWAs, and I don't want to use Firefox, Chromium, or Electron.)