setup-linux.sh accepted being run as root and simply set SUDO="". That quietly
broke everything user-scoped: PM2 keeps its process list in $HOME/.pm2 and the
login entry goes in $HOME/.config/autostart, so under sudo both landed in /root.
The install reported success, then `pm2 list` as the real user showed nothing -
it was talking to a different daemon - and the autostart entry sat in a home
directory that never logs in.
Both scripts now refuse, and name the account to use when SUDO_USER says how
they were invoked. setup-linux.sh still uses sudo for apt, which is the only
part that needs it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
