My setup is lidarr+airsonic. This setup fulfills all the requirements you listed. The webplayer is really good and you can use free apps to stream your library on mobile devices. Highly recommend “substreamer” for iOS and android. To access my library at home, I use Twingate (Zero Trrust Access VPN that uses the QUIC protocol and it’s lightning fast). Also, the mobile app allows for offline playback and has cool playlist builder features.