monitor_macos is harness = false, so nothing answered cargo-nextest's
discovery: `--list --format terse` ran the whole test and nextest failed
to parse its output on macOS. List the one test, and nothing for
`--ignored`, as mac_menu_appkit already does; `monitor_macos --exact`
still runs the body.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>