# Liveness has no test to run: the fact that this script executed at all is
    # the signal. What proves the host is alive is the PUSH arriving at Gatus,
    # and what detects the host being dead is the heartbeat window expiring with
    # no push. So this always succeeds - the reporting is the check.
    MESSAGE="up since $(uptime -p 2>/dev/null || echo unknown)"
    return 0