Y’know . . . I should have remembered that being careful isn’t always enough. There’s a new build of WordPress available, and I thought I should update to it.
But first, I cleverly backed up my files . . . I’ve been burned in the past by updates that stomp over things you wanted to keep.
Download and installed the update. Cool. Installed cleanly: great.
Except that it wiped out my style.css file. No biggie . . . I’ve got a fresh backup, so I can just . . . oh. Crap. The backup is incomplete and doesn’t include style.css.
Back to the drawing board. Tomorrow.
I’ll probably just do more damage if I try to reconstruct it tonight.