I try to set up a sharing link on: /var/lib/deluged/Downloads with the sharing app but when it is opened in a web browser I get this “You don’t have permission to access this resource.” When I have set up a sharing link for: /var/lib/transmission-daemon/downloads, and there is no problem. The permissions for the directory are.
Or maybe only the system and Deluge would need some configuration tweaks, to make also the deluge data accessible for all users and selected other apps (umask, /home/group/deluge or /home/<user>/deluge, as sgid-group-directories).