feat: OPC UA address-space search plumbing — actor + comm + BrowseService (T15)

src/ZB.MOM.WW.ScadaBridge.DataConnectionLayer/Actors/DataConnectionManagerActor.cs

@@ -50,6 +50,7 @@ public class DataConnectionManagerActor : ReceiveActor
         Receive<RemoveConnectionCommand>(HandleRemoveConnection);
         Receive<GetAllHealthReports>(HandleGetAllHealthReports);
         Receive<BrowseNodeCommand>(HandleBrowse);
+        Receive<SearchAddressSpaceCommand>(HandleSearch);
         Receive<ReadTagValuesCommand>(HandleReadTagValues);
     }
 
@@ -189,6 +190,32 @@ public class DataConnectionManagerActor : ReceiveActor
         }
     }
 
+    /// <summary>
+    /// Routes a <see cref="SearchAddressSpaceCommand"/> from the central UI's OPC
+    /// UA tag picker to the child <see cref="DataConnectionActor"/> that owns the
+    /// named connection — the address-space analogue of <see cref="HandleBrowse"/>.
+    /// Same split: the manager owns <see cref="BrowseFailureKind.ConnectionNotFound"/>
+    /// (only it knows the per-site connection set); the capability check and every
+    /// other failure live inside the child where the adapter is held.
+    /// </summary>
+    private void HandleSearch(SearchAddressSpaceCommand command)
+    {
+        if (_connectionActors.TryGetValue(command.ConnectionName, out var actor))
+        {
+            actor.Forward(command);
+        }
+        else
+        {
+            _log.Warning("No connection actor for {0} during search", command.ConnectionName);
+            Sender.Tell(new SearchAddressSpaceResult(
+                Array.Empty<AddressSpaceMatch>(),
+                CapReached: false,
+                new BrowseFailure(
+                    BrowseFailureKind.ConnectionNotFound,
+                    $"No data connection named '{command.ConnectionName}' at this site.")));
+        }
+    }
+
     /// <summary>
     /// Routes a <see cref="ReadTagValuesCommand"/> from the CentralUI's Test
     /// Bindings dialog to the child <see cref="DataConnectionActor"/> that