This package backs the PubSub high-availability seams in OPCFoundation.NetStandard.Opc.Ua.PubSub (IPubSubActivationCoordinator, IPubSubLeaseStore, IPubSubRuntimeStateStore, IPubSubSecurityKeyStore) with the distributed redundancy building blocks from OPCFoundation.NetStandard.Opc.Ua.Redundancy (ILeaderElection, ISharedKeyValueStore, IRecordProtector), so multiple PubSub instances run as an active/standby redundant set with automatic failover.

Supported redundancy modes (Part 14 §9.1.6): None, Cold, Warm, and Hot (seamless takeover with sequence-number continuity per Part 14 §7.2.5.4.1).

See docs/PubSubHighAvailability.md for the design and usage.

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