diff --git a/dotnet/tests/ZB.MOM.NatsNet.Server.IntegrationTests/JetStream/JetStreamCluster4Tests.cs b/dotnet/tests/ZB.MOM.NatsNet.Server.IntegrationTests/JetStream/JetStreamCluster4Tests.cs
new file mode 100644
index 0000000..0eb6d69
--- /dev/null
+++ b/dotnet/tests/ZB.MOM.NatsNet.Server.IntegrationTests/JetStream/JetStreamCluster4Tests.cs
@@ -0,0 +1,280 @@
+// Copyright 2025 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Mirrors server/jetstream_cluster_4_test.go in the NATS server Go source.
+// ALL tests in this file are deferred: they require a running JetStream cluster.
+
+namespace ZB.MOM.NatsNet.Server.IntegrationTests.JetStream;
+
+/// <summary>
+/// Integration tests for JetStream cluster — batch 4 operations.
+/// Mirrors server/jetstream_cluster_4_test.go.
+/// All tests are deferred pending JetStream cluster server infrastructure.
+/// </summary>
+public sealed class JetStreamCluster4Tests
+{
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void WorkQueueStreamDiscardNewDesync_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void StreamPlacementDistribution_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SourceWorkingQueueWithLimit_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseViaConfig_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseViaEndpoint_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseTimerFollowsLeader_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseResumeViaEndpoint_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseHeartbeats_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseAdvisories_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerPauseSurvivesRestart_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerNRGCleanup_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ClusteredInterestConsumerFilterEdit_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DoubleAckRedelivery_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void BusyStreams_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SingleMaxConsumerUpdate_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void StreamLastSequenceResetAfterStorageWipe_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void AckFloorBetweenLeaderAndFollowers_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerLeak_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void AccountNRG_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void AccountNRGConfigNoPanic_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void WQRoundRobinSubjectRetention_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MetaSyncOrphanCleanup_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void KeyValueDesyncAfterHardKill_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void KeyValueLastSeqMismatch_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void PubAckSequenceDupe_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void PubAckSequenceDupeAsync_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void PubAckSequenceDupeResetAfterLeaderChange_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumeWithStartSequence_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void AckDeleted_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void APILimitDefault_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void APILimitAdvisory_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void PendingRequestsInJsz_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerReplicasAfterScale_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerReplicasAfterScaleMoveConsumer_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DesyncAfterQuitDuringCatchup_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DesyncAfterErrorDuringCatchup_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerDesyncAfterErrorDuringStreamCatchup_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DesyncAfterEofFromOldStreamLeader_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ReservedResourcesAccountingAfterClusterReset_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void HardKillAfterStreamAdd_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DesyncAfterPublishToLeaderWithoutQuorum_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void PreserveWALDuringCatchupWithMatchingTerm_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DesyncAfterRestartReplacesLeaderSnapshot_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void KeepRaftStateIfStreamCreationFailedDuringShutdown_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MetaSnapshotReCreateConsistency_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MetaSnapshotConsumerDeleteConsistency_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsumerDontSendSnapshotOnLeaderChange_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DontInstallSnapshotWhenStoppingStream_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void DontInstallSnapshotWhenStoppingConsumer_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void StreamConsumerStateResetAfterRecreate_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void StreamAckMsgR1SignalsRemovedMsg_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void StreamAckMsgR3SignalsRemovedMsg_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ExpectedPerSubjectConsistency_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MsgCounterRunningTotalConsistency_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ConsistencyAfterLeaderChange_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MetaStepdownPreferred_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void OnlyPublishAdvisoriesWhenInterest_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void RoutedAPIRecoverPerformance_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MessageTTLWhenSourcing_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MessageTTLWhenMirroring_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MessageTTLDisabled_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void CreateStreamPerf_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void TTLAndDedupe_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void InvalidTTLAndDedupe_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ServerPeerRemovePeersDrift_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void StreamTagPlacement_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ObserverNotElectedMetaLeader_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void ParallelCreateRaftGroup_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SubjectDeleteMarkersMinimumTTL_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SubjectDeleteMarkersMinimumTTLExceptionMaxMsgsPer_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SubjectDeleteMarkersNoMsgTTLSet_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMMaxAgeOnRecover_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMMaxAgeRemoveMsgProposal_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMMaxAgeRemoveMsgProposalLimitRetries_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMTTLRemoveMsgProposal_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMInflightTTL_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMTTLAndMaxMsgsPer_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMMsgTTLReverseExpiry_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMResetLast_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void SDMMaxAgeProposeExpiryShortRetry_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void InvalidR1Config_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MultiLeaderR3Config_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void AccountMaxConnectionsReconnect_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MetaCompactThreshold_ShouldSucceed() { }
+
+    [Fact(Skip = "deferred: requires running JetStream cluster")]
+    public void MetaCompactSizeThreshold_ShouldSucceed() { }
+}
diff --git a/reports/current.md b/reports/current.md
index 483887d..663a9e1 100644
--- a/reports/current.md
+++ b/reports/current.md
@@ -1,6 +1,6 @@
 # NATS .NET Porting Status Report
 
-Generated: 2026-03-01 17:27:28 UTC
+Generated: 2026-03-01 17:33:05 UTC
 
 ## Modules (12 total)