=
# Windows has no working os.execvp, so spawn and forward the exit
# code instead. Imported here so the POSIX path, which replaces the
# process anyway, does not pay for the import on every run.
=
# 130 (128 + SIGINT), not warden's own usage/I-O error code: an
# interrupt must not be indistinguishable from a bad invocation.
# Untested — CI never runs this branch.