mesh/merge-gate pass: builds build-agent, mesh-controller, route-proxy → ace, g14, novox, shanks; no bus step; every machine composes with the change as it…
The store's tools and a machine's image pruning decide from the records, so
the controller says them: artifacts (every recorded artifact, kept and why,
eligible, collected on request), collect (the after-build sweep on demand,
a dry run unless confirmed with a why, recorded as a hand act) and images
(what a machine's declaration names, now and as last sent). The sweep is one
implementation with two sets of bounds.
