I’m not a code-savvy person, but starting with whatever Linear.app did with their initial PWA mobile app solution would probably be a good start? Before their native app, they did SOMETHING that made their PWA app (at least on iOS, which I used) so smooth to use. The window interface filled the whole screen, navigation actions were as expected, etc.
Don’t know how hard that is to accomplish, but probably an easier step 1 than native apps?
I don’t have access to mobile but something I’m curious to know is if the introduction of mobile will also introduce multi line text in views. I’ve attached a screenshot of the iPhone viewport width (375). A lot of the text is cropped. I know this could be fixed by limiting the number of fields that are visible inline but would be open to a text-wrap option