In a feat of unmitigated disk cleaning, I removed who-knows-what, likely from ~/Library/Developer. Now I can't build apps that rely on watchOS (or likely tvOS/visionOS from the look of things). Run a try to build, Xcode tells me I should download watchOS, immediately shows me that it has, then does nothing. My Platforms window looks like this. If I tap Get next to watchOS 10.2 it looks like it succeeds immediately, but doesn't work (notice that 10.2 is already in the list). If I try to delete 10.2 from this list, it gives me an error that it can't find it on disk to delete it.
I'm guessing there's a mismatch between some preference file and reality.
Totally my fault I'm certain. Best way to recover?
