From Plex to Jellyfin, Part 5: Migrating Audiobook Progress to Audiobookshelf (Since Nobody Else Had)

Plex stores audiobook progress at the track level, splits it by account in ways that don't survive a re-scan, and nobody had built a tool to move it to Audiobookshelf. So I wrote one, hit a couple of bad title-matching bugs along the way, and open sourced it.