install.sh now sets the hostname (default radxa-mixer, --hostname or
--keep-hostname to override) after a successful install so Avahi
advertises NAME.local, and the web mixer listens on port 80. The web
server's host check already accepts HOSTNAME.local.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The board stays hidden by default, so new phones could only pair via an
SSH session. Add 'radxa-audio discoverable on|off' backed by a transient
radxa-bt-pairing unit that auto-approves and trusts devices pairing in
the window, expires on its own, and expose it in the web mixer with a
countdown.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>