Notes for myself, in case I need it again:
https://sbcguides.com/install-deluge-on-raspberry-pi/
https://www.howtogeek.com/142044/how-to-turn-a-raspberry-pi-into-an-always-on-bittorrent-box/
https://forum.deluge-torrent.org/viewtopic.php?t=55339
https://forum.deluge-torrent.org/viewtopic.php?f=9&t=42887
https://github.com/ratanakvlun/deluge-ltconfig/releases