I want to be able to edit the manifest file

I want to be able to make a browser app that shows up as one when you go to change the default browser app

You can use Default Browser extension by @deephost for this purpose:

Or change the apps category do it shows up as a voice assist in the default apps page

I think Kodular has something related already…Share-to-own-app

How to do it

Just enable it from Screen1 properties.

Ok thanks but I want it to show up here