Implement server-authoritative multiplayer in Unreal C++ — network roles and authority (HasAuthority, GetLocalRole, GetRemoteRole, ROLE_Authority/AutonomousProxy/SimulatedProxy), actor replication setup (bReplicates, SetReplicates, bAlwaysRelevant, NetDormancy, NetUpdateFrequency), property replication (UPROPERTY Replicated/ReplicatedUsing, GetLifetimeReplicatedProps, DOREPLIFETIME/DOREPLIFETIME_CONDITION/DOREPLIFETIME_WITH_PARAMS), RepNotify callbacks (OnRep_), RPCs (UFUNCTION Server/Client/NetMulticast, Reliable/Unreliable, WithValidation, _Implementation/_Validate), replication conditions (COND_*), Push Model (MARK_PROPERTY_DIRTY_FROM_NAME, FDoRepLifetimeParams::bIsPus…
