On a self-hosted KVM runner the process has a real controlling terminal
so name_color_modal successfully opens /dev/tty and enters a curses
loop waiting for keyboard input, hanging the test indefinitely.
Docker containers (ubuntu-latest runners) don't have a real /dev/tty,
causing an OSError that triggers the existing fallback — this is why
the hang was invisible in ubuntu-latest CI.
Also add timeout=5 to _daemon_reachable() to match the same defensive
fix already applied to docker_available() in tests/_docker.py.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
didericis-claude
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