Are queue logs meant to be kept indefinitely?

[FibreTTP]

I've had my VM disk unknowlingly fill up completely a couple of times now because long, individual video download logs (live archives) frequently reach 200 MiB+. This obviously stops postgres, which stops Ganymede.

I've also had intermittent internet cutouts, and thought that the logs weren't being deleted because - since the queued video never actually errors when connection is lost (ffmpeg hangs indefinitely) - cancelling the queue item with "delete video and video files" doesn't delete the logs attributed to that video. I don't actually know if that's true or not, but that's what I thought.

Are logs meant to be retained even when the queue successfully downloads without error?

[Zibbp]

Adding that in #1126