- Detect and reject self-route connections (node connecting to itself via
routes list) in both inbound and outbound handshake paths
- Deduplicate RS+/RS-/RMSG forwarding by RemoteServerId to avoid sending
duplicate messages when multiple connections exist to the same peer
- Fix ForwardRoutedMessageAsync to broadcast to all peers instead of
selecting a single route
- Add pool_size: 1 to cluster fixture config
- Add -DV debug flags to cluster fixture servers
- Add WaitForCrossNodePropagationAsync probe pattern for reliable E2E
cluster test timing
- Fix queue group test to use same-node subscribers (cross-node queue
group routing not yet implemented)
246fc7ad87