The CLI defaults to /var/run/netbird.sock which doesn't exist in our
rootless setup. Export NB_DAEMON_ADDR and NB_CONFIG in .bashrc so the
CLI automatically connects to the user-level daemon socket.
Verify SHA-256 checksums from the release checksums.txt before
installing. In do_update, download and verify the new binary to a
staging directory before stopping the running service so a failed
download leaves the existing installation untouched.
Standalone installer for Steam Deck / SteamOS that runs NetBird
entirely from /home using netstack mode — no root, no sysext, no
TUN device required. Survives all OS updates without intervention.