feat(opcua): add ISurgicalAddressSpaceSink + node-manager in-place tag-attribute update (F10b)

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

@@ -0,0 +1,13 @@
+namespace ZB.MOM.WW.OtOpcUa.Commons.OpcUa;
+
+/// <summary>Optional capability on an address-space sink: surgical in-place attribute updates on an
+/// EXISTING variable node, used by Phase7Applier to avoid a full RebuildAddressSpace for pure-property
+/// tag changes (Writable / Historizing). A sink that does not implement it ⇒ caller falls back to a
+/// full rebuild (safe default).</summary>
+public interface ISurgicalAddressSpaceSink
+{
+    /// <summary>Update an existing variable node's Writable (AccessLevel + inbound-write handler) and
+    /// Historizing (+ historian-tagname binding) IN PLACE, notifying subscribers (ClearChangeMasks)
+    /// without a rebuild. Returns false if the node does not exist (caller should rebuild instead).</summary>
+    bool UpdateTagAttributes(string variableNodeId, bool writable, string? historianTagname);
+}