Turns out I got my computer stolen in November 8th, 2015, and that meant I had to restore this site from backup, which was also stolen. So, oops?
However, it turns out that if you wait a year and a half and then spend a few hours munging bits from the published site into a 3-years-older backup, it's possible to "decompile" a Nikola-based site back into a working site. Or at least a site with the same number of posts as the "old" site had. Which is something, right?
Still need to check for dead links, and I lost the "originals" of a bunch of images from trips, but nothing terrible.
Will I write again? Who knows. But at least if I don't it's because I don't want to.