Name the build agent where genesis needs the module that builds (hq issue 596)

The beds checked the catalogue for builder/module.json before running genesis and the mesh beds held
'builder' among a raised mesh's modules; the catalogue retired builder for build-agent on 2026-10-03
(ADR 0190), so every genesis bed stopped before the installer ran.

test/integration/one-node-mesh.test.ts

@@ -109,7 +109,7 @@ const CONTROL_PLANE = { module: "mesh-controller", repo: "mesh-controller", path
  * the registry and the builder — are here too: they are carried in, and a mesh missing any of them
  * is not one.
  */
-const MUST_HOLD = ["mesh-controller", "distribution", "builder", "mesh-tools", "postgres",
+const MUST_HOLD = ["mesh-controller", "distribution", "build-agent", "mesh-tools", "postgres",
   "mesh-catalog", "lavinmq", "mesh-vault", "amqp-ping"];
 const MUST_RUN = ["mesh-controller", "mesh-registry", "mesh-broker", "mesh-store",
   "mesh-postgres", "mesh-catalog", "mesh-lavinmq", "mesh-vault", "amqp-ping"];
@@ -898,7 +898,7 @@ before(async () => {
     // does. novox/hq issue 050 — on a fresh mesh the modules built before the catalogue existed
     // are exactly the ones it needed in order to exist, so the hole is always the foundation.
     const missing = MUST_HOLD.filter((m) =>
-      !["distribution", "builder"].includes(m) && !held.includes(m));
+      !["distribution", "build-agent"].includes(m) && !held.includes(m));
     assert.deepEqual(missing, [],
       `the catalogue does not hold ${missing.join(", ")} — the mesh built them and its own ` +
       `record has no trace of it (novox/hq issue 050):\n${held}`);