With Navidrome slowly becoming a leader in the self-hosted music space, it would be great to have full support for the Navidrome API, not just OpenSubsonic.
Problem solved:
This will become increasingly import as new features added to Navidrome, like Navidrome’s native smart playlist (currently in beta testing), will be read-only and not editable from Symfonium. We will then have two smart playlists: those created on Navidrome and those created on Symfonium.
It’s not in OS yet and Deluan chose to implement it in his own API instead of pushing to OS because it was there before probably and lack of time or interest.