fix(v3-batch4-wp3): realm-qualified write routing + dormant discovery guard + self-correction/byte-parity tests (Wave B review H1/M1/M2/L1/L3)

H1 (HIGH): write-routing key now (AddressSpaceRealm, bareId), not bare-only.
A raw s=<RawPath> and a UNS s=<Area/Line/Equip/Eff> can collide as bare
strings; the bare-only key let a colliding raw+UNS pair route to the WRONG
driver ref (last-writer-wins). The realm the node manager resolves (RealmOf)
is now threaded through IOpcUaNodeWriteGateway.WriteAsync -> RouteNodeWrite ->
_driverRefByNodeId keyed by (realm, bareId). New regression test:
Colliding_raw_and_uns_bare_ids_route_to_their_own_driver_by_realm.

M1 (MEDIUM): discovered-node injection made coherently DORMANT. HandleDiscoveredNodes
hard-short-circuits (single enforcement point; _discoveredByDriver never
populates so the re-inject tail is inert too), with a clear log pointing at the
/raw browse-commit flow. New pin: Discovered_nodes_are_ignored_dormant_in_v3;
the 16+2 v2 injection scenarios re-pointed to an accurate skip reason
(DiscoveryInjectionDormantV3).

M2 (MEDIUM): realm-qualified dual-node self-correction tests —
Failed_uns_write_reverts_uns_node_and_leaves_raw_node_untouched +
Raw_realm_revert_reverts_raw_node_only (the second fails if the realm is dropped).

L1: removed the = AddressSpaceRealm.Uns defaults from the consequential
node-manager mutation methods (WriteValue/WriteAlarmCondition/MaterialiseAlarmCondition/
EnsureFolder/EnsureVariable/UpdateFolderDisplayName/UpdateTagAttributes/
RaiseNodesAddedModelChange/Remove*/RevertOptimisticWriteIfNeeded) + the
AttributeValueUpdate/AlarmStateUpdate records, so the compiler forces explicit
realm; read-only accessors + internal builders retain their defaults.

L3: fixed the stale VirtualTagHostActor class comment (V3NodeIds.Uns, not the
retired EquipmentNodeIds.Variable).

Also: DeploymentArtifactRawUnsParityTests — Raw/UNS node-set byte-parity
round-trip between AddressSpaceComposer.Compose and DeploymentArtifact.ParseComposition.

Claude-Session: https://claude.ai/code/session_01LVneM3eh1UtJxEisFXgmox

src/Server/ZB.MOM.WW.OtOpcUa.OpcUaServer/OtOpcUaNodeManager.cs

@@ -349,7 +349,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// <param name="value">The new value to write.</param>
     /// <param name="quality">The OPC UA quality status code.</param>
     /// <param name="sourceTimestampUtc">The timestamp of the value in UTC.</param>
-    public void WriteValue(string nodeId, object? value, OpcUaQuality quality, DateTime sourceTimestampUtc, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public void WriteValue(string nodeId, object? value, OpcUaQuality quality, DateTime sourceTimestampUtc, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(nodeId);
         EnsureAddressSpaceCreated();
@@ -386,7 +386,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// <param name="alarmNodeId">The node identifier of the alarm (== ScriptedAlarmId for materialised conditions).</param>
     /// <param name="state">The full condition state to project onto the node.</param>
     /// <param name="sourceTimestampUtc">The timestamp of the alarm state change in UTC.</param>
-    public void WriteAlarmCondition(string alarmNodeId, AlarmConditionSnapshot state, DateTime sourceTimestampUtc, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public void WriteAlarmCondition(string alarmNodeId, AlarmConditionSnapshot state, DateTime sourceTimestampUtc, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(alarmNodeId);
         ArgumentNullException.ThrowIfNull(state);
@@ -678,7 +678,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     ///     <see cref="AlarmConditionState"/>. LimitAlarm deliberately falls back to base per the T13
     ///     notes — a script alarm carries no High/Low limits to populate.</para>
     /// </remarks>
-    public void MaterialiseAlarmCondition(string alarmNodeId, string equipmentNodeId, string displayName, string alarmType, int severity, bool isNative = false, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public void MaterialiseAlarmCondition(string alarmNodeId, string equipmentNodeId, string displayName, string alarmType, int severity, AddressSpaceRealm realm, bool isNative = false)
     {
         ArgumentException.ThrowIfNullOrEmpty(alarmNodeId);
         ArgumentException.ThrowIfNullOrEmpty(displayName);
@@ -1000,7 +1000,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
         // revert never runs inline on the SDK write thread (the gateway can return a synchronously-completed
         // task — e.g. its boot-window "no DriverHostActor yet" branch), so RevertOptimisticWriteIfNeeded never
         // re-enters lock (Lock) while CustomNodeManager2.Write still holds it.
-        _ = gateway.WriteAsync(nodeKey, optimisticValue, CancellationToken.None)
+        _ = gateway.WriteAsync(nodeKey, optimisticValue, nodeRealm, CancellationToken.None)
             .ContinueWith(
                 t =>
                 {
@@ -1206,7 +1206,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// from <see cref="OnEquipmentTagWrite"/> to populate the audit event's ClientUserId; null when unknown.</param>
     internal void RevertOptimisticWriteIfNeeded(
         string nodeId, NodeWriteOutcome outcome, object? optimisticValue, object? priorValue, StatusCode priorStatus,
-        string? clientUserId, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+        string? clientUserId, AddressSpaceRealm realm)
     {
         // Built under Lock if (and only if) a revert is performed, then reported AFTER Lock is released.
         AuditWriteUpdateEventState? auditEvent = null;
@@ -1398,7 +1398,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// <param name="folderNodeId">The node identifier of the folder.</param>
     /// <param name="parentNodeId">The node identifier of the parent folder; null to use the namespace root.</param>
     /// <param name="displayName">The display name of the folder.</param>
-    public void EnsureFolder(string folderNodeId, string? parentNodeId, string displayName, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public void EnsureFolder(string folderNodeId, string? parentNodeId, string displayName, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(folderNodeId);
         ArgumentException.ThrowIfNullOrEmpty(displayName);
@@ -1443,7 +1443,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// <param name="folderNodeId">The node identifier of the folder to update in place.</param>
     /// <param name="displayName">The new display name to apply.</param>
     /// <returns>True when the in-place update was applied; false when the folder id is unknown.</returns>
-    public bool UpdateFolderDisplayName(string folderNodeId, string displayName, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public bool UpdateFolderDisplayName(string folderNodeId, string displayName, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(folderNodeId);
         ArgumentException.ThrowIfNullOrEmpty(displayName);
@@ -1485,7 +1485,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// <paramref name="dataType"/> — rank + dimensions carry the array-ness.</param>
     /// <param name="arrayLength">Phase 4c: the declared length of the 1-D array when
     /// <paramref name="isArray"/> is true; ignored for scalars. Null ⇒ length 0.</param>
-    public void EnsureVariable(string variableNodeId, string? parentFolderNodeId, string displayName, string dataType, bool writable, string? historianTagname = null, bool isArray = false, uint? arrayLength = null, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public void EnsureVariable(string variableNodeId, string? parentFolderNodeId, string displayName, string dataType, bool writable, AddressSpaceRealm realm, string? historianTagname = null, bool isArray = false, uint? arrayLength = null)
     {
         ArgumentException.ThrowIfNullOrEmpty(variableNodeId);
         ArgumentException.ThrowIfNullOrEmpty(displayName);
@@ -1583,7 +1583,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     /// <param name="isArray">When true the node becomes a 1-D array (ValueRank=OneDimension); when false scalar.</param>
     /// <param name="arrayLength">The declared length of the 1-D array when <paramref name="isArray"/> is true; ignored for scalars.</param>
     /// <returns>True when the in-place update was applied; false when the node id is unknown.</returns>
-    public bool UpdateTagAttributes(string variableNodeId, bool writable, string? historianTagname, string dataType, bool isArray, uint? arrayLength, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public bool UpdateTagAttributes(string variableNodeId, bool writable, string? historianTagname, string dataType, bool isArray, uint? arrayLength, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(variableNodeId);
         ArgumentException.ThrowIfNullOrEmpty(dataType); // widened surface ⇒ explicit contract (unknown names still map to BaseDataType)
@@ -1712,7 +1712,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     ///     </para>
     /// </summary>
     /// <param name="affectedNodeId">The folder-scoped node id of the parent under which nodes were added.</param>
-    public void RaiseNodesAddedModelChange(string affectedNodeId, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public void RaiseNodesAddedModelChange(string affectedNodeId, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(affectedNodeId);
         GeneralModelChangeEventState e;
@@ -2004,7 +2004,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     }
 
     /// <inheritdoc cref="ISurgicalAddressSpaceSink.RemoveVariableNode"/>
-    public bool RemoveVariableNode(string variableNodeId, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public bool RemoveVariableNode(string variableNodeId, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(variableNodeId);
         EnsureAddressSpaceCreated();
@@ -2028,7 +2028,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     }
 
     /// <inheritdoc cref="ISurgicalAddressSpaceSink.RemoveAlarmConditionNode"/>
-    public bool RemoveAlarmConditionNode(string alarmNodeId, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public bool RemoveAlarmConditionNode(string alarmNodeId, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(alarmNodeId);
         EnsureAddressSpaceCreated();
@@ -2053,7 +2053,7 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
     }
 
     /// <inheritdoc cref="ISurgicalAddressSpaceSink.RemoveEquipmentSubtree"/>
-    public bool RemoveEquipmentSubtree(string equipmentNodeId, AddressSpaceRealm realm = AddressSpaceRealm.Uns)
+    public bool RemoveEquipmentSubtree(string equipmentNodeId, AddressSpaceRealm realm)
     {
         ArgumentException.ThrowIfNullOrEmpty(equipmentNodeId);
         EnsureAddressSpaceCreated();