In the process of cleaning out spam I accidentally removed a bunch of valid comments. (Bad UI, Typo! Stupid human, Brian!) Sigh. I dug through the default sqlite database for this thing and it looks like the comments were legitimately removed, not just marked for deletion. The database isn’t backed up anywhere. Clearly I am a super genius. If anyone has any bright ideas, let me know in the comments, which I will try not to subsequently delete.
Maybe Wordpress is everything it’s cracked up to be. Typo has been a bit of a disappointment. It crashes occasionally too, and I’ve glanced at the logs but I haven’t nailed down the reason yet.