A bed says what it actually needs to be pointed at

The instructions in every bed named the bundle that raises the predecessor's
broker, so a first attempt ends in a control plane crash-looping on a missing
MESH_BUS_NATS — which reads like a broken lab. They name the bundle that works
now, and the README says the host binary needs SYSTEM=arch, because one built
without it refuses everything with an empty system name.

And the three habits that each cost a run before they were adopted:
MESH_LAB_KEEP to leave the machine standing, MESH_LAB_WARM while iterating,
and rebuilding all three repositories the bed places rather than the one that
changed.

test/integration/assigned-catalogue-small.test.ts

@@ -18,7 +18,7 @@
  * path is fulfilled by creating the consumer's login with the mesh-minted password — it seals nothing
  * and needs no seal key (novox/hq ADR 0048, issue 032-provider-runtime-has-no-seal-key).
  *
- *   MESH_LAB_HOST_BINARY=.../mesh-host   MESH_LAB_BUNDLE=.../examples/foundation-first-node.lock
+ *   MESH_LAB_HOST_BINARY=.../mesh-host   MESH_LAB_BUNDLE=.../examples/foundation-first-node-nats.lock
  *   scripts/build-module-runtime.sh {postgres,redis,minio,plex} build the four runtime images into the
  *   local daemon; scenarios/catalogue-small.yml stocks them. postgres:17-alpine, redis:7-alpine and
  *   minio/minio:latest is pulled from the internet by the node itself.