57 tests without GPU, recordings or Frame: fake pipeline, fake splat-transform and trash, and
synthetic rooms with a known error for putting rooms together. Found on the way: after cancelling,
the job counted as finished when systemd-inhibit ended, while splat.sh was still putting the
previous scene back – pid_alive now looks at the whole process group.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
