feat(otopcua): applier pass to materialise discovered nodes idempotently

src/Core/ZB.MOM.WW.OtOpcUa.Commons/OpcUa/DeferredAddressSpaceSink.cs

@@ -70,6 +70,10 @@ public sealed class DeferredAddressSpaceSink : IOpcUaAddressSpaceSink, ISurgical
     /// <summary>Rebuilds the address space through the inner sink.</summary>
     public void RebuildAddressSpace() => _inner.RebuildAddressSpace();
 
+    /// <summary>Announces a runtime NodeAdded model-change (discovered-node injection) through the inner sink.</summary>
+    /// <param name="affectedNodeId">The node under which discovered nodes were added.</param>
+    public void RaiseNodesAddedModelChange(string affectedNodeId) => _inner.RaiseNodesAddedModelChange(affectedNodeId);
+
     /// <summary>Forwards an in-place tag-attribute update (F10b) to the inner sink when it supports the
     /// surgical capability. Returns false otherwise — before the real <c>SdkAddressSpaceSink</c> is
     /// swapped in (inner is still the null sink), or any inner sink that isn't surgical — so the caller

src/Core/ZB.MOM.WW.OtOpcUa.Commons/OpcUa/IOpcUaAddressSpaceSink.cs

@@ -84,6 +84,10 @@ public interface IOpcUaAddressSpaceSink
     ///     successful deployment apply so the node manager reflects the new config. Idempotent.
     /// </summary>
     void RebuildAddressSpace();
+
+    /// <summary>Announce that nodes were added at runtime (discovered-node injection) under
+    /// <paramref name="affectedNodeId"/> so subscribed clients refresh their browse (Part 3 GeneralModelChangeEvent, verb NodeAdded).</summary>
+    void RaiseNodesAddedModelChange(string affectedNodeId);
 }
 
 /// <summary>OPC UA status code projection — Good / Uncertain / Bad. Real SDK has finer-grained
@@ -114,4 +118,7 @@ public sealed class NullOpcUaAddressSpaceSink : IOpcUaAddressSpaceSink
 
     /// <inheritdoc />
     public void RebuildAddressSpace() { }
+
+    /// <inheritdoc />
+    public void RaiseNodesAddedModelChange(string affectedNodeId) { }
 }