feat: complete jetstream deep operational parity closure

docs/plans/2026-02-23-jetstream-remaining-parity-verification.md

@@ -133,3 +133,48 @@ Result:
 - Failed: `0`
 - Skipped: `0`
 - Duration: `~1m 15s`
+
+## Deep Operational Parity Gate (2026-02-23)
+
+Command:
+
+```bash
+dotnet test tests/NATS.Server.Tests --filter "FullyQualifiedName~JetStream|FullyQualifiedName~Raft|FullyQualifiedName~Gateway|FullyQualifiedName~Leaf|FullyQualifiedName~Route|FullyQualifiedName~DifferencesParityClosureTests|FullyQualifiedName~JetStreamParityTruthMatrixTests" -v minimal
+```
+
+Result:
+
+- Passed: `121`
+- Failed: `0`
+- Skipped: `0`
+- Duration: `~15s`
+
+Command:
+
+```bash
+dotnet test -v minimal
+```
+
+Result:
+
+- Passed: `842`
+- Failed: `0`
+- Skipped: `0`
+- Duration: `~1m 15s`
+
+Focused deep-operational evidence:
+
+- `JetStreamParityTruthMatrixTests.Jetstream_parity_rows_require_behavior_test_and_docs_alignment`
+- `JetStreamParityTruthMatrixTests.Jetstream_differences_notes_have_no_contradictions_against_status_table_and_truth_matrix`
+- `JetStreamInternalClientRuntimeTests.Internal_jetstream_client_is_created_bound_to_sys_account_and_used_by_jetstream_service_lifecycle`
+- `JetStreamRetentionRuntimeParityTests.Workqueue_and_interest_retention_apply_correct_eviction_rules_under_ack_and_interest_changes`
+- `JetStreamDedupeWindowParityTests.Dedupe_window_expires_entries_and_allows_republish_after_window_boundary`
+- `JetStreamConsumerDeliverPolicyLongRunTests.Deliver_policy_last_per_subject_and_start_time_resolve_consistent_cursor_under_interleaved_subjects`
+- `JetStreamAckRedeliveryStateMachineTests.Ack_all_and_backoff_redelivery_follow_monotonic_floor_and_max_deliver_rules`
+- `JetStreamFlowControlReplayTimingTests.Push_flow_control_and_rate_limit_frames_follow_expected_timing_order_under_burst_load`
+- `JetStreamFileStoreDurabilityParityTests.File_store_recovers_block_index_map_after_restart_without_full_log_scan`
+- `JetStreamFileStoreCompressionEncryptionParityTests.Compression_and_encryption_roundtrip_is_versioned_and_detects_wrong_key_corruption`
+- `RaftAppendCommitParityTests.Leader_commits_only_after_quorum_and_rejects_conflicting_log_index_term_sequences`
+- `RaftOperationalConvergenceParityTests.Lagging_follower_converges_via_next_index_backtrack_then_snapshot_install_under_membership_change`
+- `JetStreamClusterGovernanceBehaviorParityTests.Meta_group_and_replica_group_apply_consensus_committed_placement_before_stream_transition`
+- `JetStreamCrossClusterBehaviorParityTests.Cross_cluster_jetstream_replication_propagates_committed_stream_state_not_just_forward_counter`