Probes link to the panel directly, container nodes update through signed
releases, the frontend exists and the ports changed. The roadmap is gone; its
open items live in the README.
A probe now links to the backend like an agent (probe.json carries the
server address). The backend sends the agent list as desired state and the
probe reports its platform and build in its own hello. The agent no longer
relays the list or the probe platform. Existing probes must be re-created.
justme