Always test your backups...
On Friday evening I decided I would upgrade Logseq on my Chromebook. I had made a note of how I did this last time so figured it would be no biggie. However, something's not right and it failed to launch without some task killing so that's no good.
Fortunately, I ran a Restic backup of my home directory beforehand so it was simple enough to delete the broken directory, restore from Restic and get back up and running again. I'm still not sure what failed, but at least I'm working again while I figure it out.