The data tree record carries the needed flag since 072380c26, and
the manifest test still built the three-part one. profile_sync's triage
lists and _emit's returns, site_insights' GoatCounter answers and
make_demo's blocks are annotated, and the baseline loses the entry
that no longer occurs.
scripts/make_demo.py builds an ArkOS card under tmp/demo/, mounts it in a
user mount namespace, serves the checkout on loopback and runs
docs_assets/demo/install.tape with VHS, then encodes the GIF, WebM, MP4
and poster and holds them to their size targets.