edit:
I needed to edit ~/.config/qui/config.toml and bind the host to “0.0.0.0”

I’m running Debian (12) and I just installed qui, a single binary dropped in /usr/local/bin. When I fire it up, I can access the web interface on the local machine via localhost:7476, but I cannot access it over the LAN via the server’s IP. Firefox just says ‘Unable to connect’.
I can access a dozen other services over the LAN, and as far as I’m aware there’s no firewall enabled by default.
What gives?