I haven't been running Prettier consistently on things in this project.
Now, it's quick-runnable, and I've got it on everything!
Also, I just think tabs are the right default for this kind of thing,
and I'm glad to get to switch over to it! (In `package.json`.)
This is an important workflow for people doing art stuff, I'm told! They used to use the Classic DTI broken image UI for this, but now that that's uhh Fully Gone, let's add this more explicitly!
