Proactive BATMAN-style next-hop routing engine.
Ownership:
- router owns canonical route publication, handles, leases, and route truth
- BATMAN owns proactive originator observations, neighbor ranking, and best-next-hop state
- route visibility is
NextHopOnly; the engine does not pretend to expose a full explicit path
This crate implements a proactive next-hop routing model over Jacquard's shared world observations. It starts from an OGM-equivalent baseline for route quality and optionally refines ranking with richer shared link observations when they are present.