feat(commons): add surgical remove members to ISurgicalAddressSpaceSink + deferred forwarding (guard-verified) (R2-07 T7)

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

@@ -1746,6 +1746,19 @@ public sealed class OtOpcUaNodeManager : CustomNodeManager2
         }
     }
 
+    // R2-07 Phase 2 (T7 placeholder) — surgical single-node / subtree removal. These return false (the
+    // rebuild-fallback contract) so the tree stays shippable at T7 while T8/T9/T10 implement the real
+    // in-place teardown (mirroring the per-node loops inside RebuildAddressSpace, scoped to the id/subtree,
+    // with a NodeDeleted model-change reported outside Lock). Implemented in T8/T9/T10.
+    /// <inheritdoc cref="ISurgicalAddressSpaceSink.RemoveVariableNode"/>
+    public bool RemoveVariableNode(string variableNodeId) => false;
+
+    /// <inheritdoc cref="ISurgicalAddressSpaceSink.RemoveAlarmConditionNode"/>
+    public bool RemoveAlarmConditionNode(string alarmNodeId) => false;
+
+    /// <inheritdoc cref="ISurgicalAddressSpaceSink.RemoveEquipmentSubtree"/>
+    public bool RemoveEquipmentSubtree(string equipmentNodeId) => false;
+
     private FolderState ResolveParentFolder(string? parentNodeId)
     {
         EnsureAddressSpaceCreated();

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

@@ -48,6 +48,18 @@ public sealed class SdkAddressSpaceSink : IOpcUaAddressSpaceSink, ISurgicalAddre
     public bool UpdateFolderDisplayName(string folderNodeId, string displayName)
         => _nodeManager.UpdateFolderDisplayName(folderNodeId, displayName);
 
+    /// <inheritdoc />
+    public bool RemoveVariableNode(string variableNodeId)
+        => _nodeManager.RemoveVariableNode(variableNodeId);
+
+    /// <inheritdoc />
+    public bool RemoveAlarmConditionNode(string alarmNodeId)
+        => _nodeManager.RemoveAlarmConditionNode(alarmNodeId);
+
+    /// <inheritdoc />
+    public bool RemoveEquipmentSubtree(string equipmentNodeId)
+        => _nodeManager.RemoveEquipmentSubtree(equipmentNodeId);
+
     /// <inheritdoc />
     public void RebuildAddressSpace() => _nodeManager.RebuildAddressSpace();