A merge-check.sh, the repository's layer of the mesh's merge check (mesh/repo-check):
format, vet, and node-tools' suite under the race detector. The tests shared one bus and
had to run one package at a time; like the controller's (#97), each now starts a server
of its own at the release go.mod pins, held to the catalogue's bus image by a test. What
cannot run in the check — bundles that need @novox/mesh-sdk — is said as not tested.
