Past that, the big one is “disk” in Contents/Resources/app/src/ — which I will be completely honest, I don’t know what that is exactly. Is it a disk image? If so, does it have to be set to a reasonably large size at build time so you don’t run out of space in the emulator?
Ah, yeah, I think I assumed correctly. In the emulator, the “macintosh.js” hard drive is 650 MB, so you must have to explicitly give it a big giant size to begin with, as it can’t dynamically increase the volume size on the fly.