Variable text size on desktop app

My eyes are getting a tiny bit worse every year 😭. I'd love to be able to increase the text size in the desktop app, either with Cmd +/- or via a setting in the preferences. I could achieve this via an OS-level setting, but like many folks I need slightly larger text for reading/writing documents than I do elsewhere in my OS. (This clearly has accesability implications for folks with more extreme visual imparements too, which feels important given what Cleft does?)