The runner-* commands source commands/lib/runner-config.sh. Without -x,
shellcheck will not follow that source even though the files carry a
`source=SCRIPTDIR/...` directive, so it reported SC1091 on all three —
and shellcheck exits non-zero on any finding, info-level included.
commands/*.sh does not glob into lib/, so runner-config.sh was being
linted by nothing at all. List it explicitly.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
