H-17 made discovery read the node-engine's own name (§527) instead of the constant mesh-host,
but the integration test still gave its link no own name and expected mesh-host, so every
endpoint announced an empty module. It now gives the link an own name and expects that one.
Builds: design 47 G §634, A-149
Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h