gateline new's body (flags-first, TTY fallback — AC2.1–2.3/AC3.1–3.2). Returns the process exit code the caller should use; never calls process.exit itself (the runSelfUpdate precedent).
gateline new
process.exit
runSelfUpdate
gateline new's body (flags-first, TTY fallback — AC2.1–2.3/AC3.1–3.2). Returns the process exit code the caller should use; never callsprocess.exititself (therunSelfUpdateprecedent).