Module cluster 

Distributed cluster coordination. Runtime services are gated behind cluster; the control namespace retains feature-neutral checkpoint value types in every build. Cluster coordination: discovery and control plane.

Modules

control

Control plane: leader election, assignment snapshots, barrier coordination. Cluster control plane: leader election, assignment snapshots, and barrier coordination.

discovery

Node discovery and membership. Peer discovery: StaticDiscovery (seed list) and GossipDiscovery (chitchat).

testing

In-process harness for cluster integration tests. Gated because it pulls in chitchat on loopback UDP. MiniCluster — in-process harness for cluster-control integration tests.