Description

[Environment]
Device: Linux 5.15.0-171-generic x86_64, No GPU
NemoClaw: v0.0.11

[Steps to Reproduce]
If a user names their sandbox "status": nemoclaw status connect would try global "status" command, not sandbox "status"

[Expected Result]
Onboard should reject sandbox names that match global commands (status, list, debug, start, stop, onboard, setup, deploy, uninstall, credentials, help).

[Actual Result]
Names like "status" pass validation (matches /^a-z?$/) and would be registered, but nemoclaw status connect routes to the global status command.
Tested: nemoclaw onboard status → "Unknown onboard option(s): status" (treats "onboard" as global cmd, "status" as arg)
Tested: nemoclaw list status → shows sandbox list (treats "list" as global cmd, ignores "status")

Bug Details

[NVB# 6065943]

[NVB#6065943]