Sonarr is doing its job a little too well, and that turns out to be the whole problem. The way I have it set up, every show runs through a quality profile that keeps upgrading the episode whenever something better shows up. The ladder is the usual one: 720p first, then 1080p when it lands, then a 1080p Proper if there ever is one, then 2160p the day somebody finally posts the UHD release. Sonarr sees the better file, downloads it, swaps the old one out, updates the database, and quietly moves on. On the Sonarr box itself this is exactly the behavior I want, and it works beautifully there.
The trouble is, the Sonarr box isn't where I actually watch anything from. Everything I download gets rsynced over to my NAS, which doubles as a long-term archive of (almost) everything I've ever watched, with Jellyfin sitting on top of it serving the library out to whatever client I happen to be in front of.…