- decnet.models.DeckyConfig grows an optional 'host_uuid' (the SwarmHost that runs this decky). Defaults to None so legacy unihost state files deserialize unchanged. - decnet.agent.executor: replace non-existent config.name references with config.mode / config.interface in logs and status payload. - tests/swarm/test_state_schema.py covers legacy-dict roundtrip, field default, and swarm-mode assignments.