conmand was binding to localhost only (server loopback=on default), so
the conman client on workstations couldn't connect. The intended workflow
is: conman client (workstation) → conmand (pfv-tsys4:7890 over Tailscale)
→ ser2net (TCP 2001-2007) → serial device. Without remote conmand access,
users had to telnet directly to ser2net, which conflicts with conmand's
persistent connections (kickolduser kicks the telnet session immediately).
Changes:
- generate-config.sh: add server loopback=off to conman.conf so conmand
listens on 0.0.0.0:7890 (reachable via Tailscale)
- query-remote.sh: new script for workstations — installs conman client,
verifies connectivity, lists or connects to consoles
- README.md: clarify access model (conman primary, telnet emergency only
with conmand stopped). Document the kickolduser conflict.
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Assisted-by: Crush:glm-5.2
