Hermes v0.20 removed chat's --oneshot flag, which hermes_prompt_ready
used as its capability marker. A fully bootstrapped Hermes Desktop
install then read as not ready: --check failed forever, the default
agent flow looped back into the installer, and --now dead-ended with
"Launch Hermes Desktop once to finish installing it" on a machine
where it already had.
Probe for --tui and --query instead: the flags omarchy-agent actually
passes to seed an interactive session, rather than one that merely
shipped alongside them.