Keepass that it is mentioned was like auto-type not what browser extension does.
This could inherently create some security issues I guess, so maybe this is why it is not there.
Unless the app can support it, which means that it would be easier to make it work for windows, Mac and then linux, or if the app is electron based maybe.
Just thinking out loud

I pay $15 a month for unlimited storage.

their plans go up to 2TB. Is this hidden?

not the OP, but really interested on the following.

I was able to setup VSC etc for remote ssh and edit, but the problem is that when you need to sudo, then this does not translate.
VSC will use the credentials of the account you used to connect , but could not figure out how to elevate with sudo or another account when you need to.

did you manage to do that?