Review fallout from removing progressive publication.
The Live benchmark existed to compare atomic against progressive delivery:
compareModelBackedReports measures goToFirstVariantMs improvement of one
over the other. With progressive gone it measures nothing against nothing.
Worse, benchmark-live.mjs still passed `progressive` to bootFixtureSession,
which no longer accepts it, so `--delivery progressive` was silently
ignored and would have emitted reports labeled progressive that actually
ran atomic. Silent wrong data is worse than a crash. It was built for
progressive, so it goes with progressive: benchmark-live.mjs, its lib, its
test, and the bench:live script. If an atomic latency baseline is wanted
later, that is a smaller thing built on purpose.
live-wrap.mjs: sourceOriginalLines was assigned and never read.
Both found by review bots on #381 (Copilot).
Assisted-by: Claude Code