fix(dcl): verify-endpoint probe logs through a real logger so first-time OPC UA app-cert creation is visible (#121)

The site's DataConnectionManagerActor handed VerifyEndpointAsync a NullLogger. A secured
probe is usually what first creates a node's application certificate, so the creation
Warning carrying the thumbprint every server must trust was silently discarded (found on the
rig live gate). The actor takes an optional probe logger; the Host supplies one. Test pins
creation logged once (Warning, thumbprint), not on reuse.

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

@@ -33,6 +33,7 @@ public class DataConnectionManagerActor : ReceiveActor
     // UA connections. Needed by the verify-endpoint probe (VerifyEndpointCommand), which
     // builds an ApplicationConfiguration directly rather than through a connection actor.
     private readonly OpcUaGlobalOptions _opcUaGlobalOptions;
+    private readonly Microsoft.Extensions.Logging.ILogger _probeLogger;
     private readonly Dictionary<string, IActorRef> _connectionActors = new();
 
     // Children this manager has STOPPED (RemoveConnectionCommand) but whose Terminated has not
@@ -56,13 +57,20 @@ public class DataConnectionManagerActor : ReceiveActor
     /// verify-endpoint probe; null falls back to defaults (mirrors
     /// <see cref="DataConnectionFactory"/>'s default-options constructor).
     /// </param>
+    /// <param name="probeLogger">
+    /// Logger for the verify-endpoint probe; null discards. Gitea #121: a secured probe is
+    /// usually what first creates the node's OPC UA application certificate, and that
+    /// creation's Warning (with the thumbprint every server must trust) must reach the node log.
+    /// </param>
     public DataConnectionManagerActor(
         IDataConnectionFactory factory,
         DataConnectionOptions options,
         ISiteHealthCollector healthCollector,
         ISiteEventLogger? siteEventLogger = null,
-        OpcUaGlobalOptions? opcUaGlobalOptions = null)
+        OpcUaGlobalOptions? opcUaGlobalOptions = null,
+        Microsoft.Extensions.Logging.ILogger? probeLogger = null)
     {
+        _probeLogger = probeLogger ?? NullLogger.Instance;
         _factory = factory;
         _options = options;
         _healthCollector = healthCollector;
@@ -403,9 +411,8 @@ public class DataConnectionManagerActor : ReceiveActor
             return;
         }
 
-        var probeLogger = NullLogger.Instance;
         RealOpcUaClient
-            .VerifyEndpointAsync(config, _opcUaGlobalOptions, probeLogger, TimeSpan.FromSeconds(6), CancellationToken.None)
+            .VerifyEndpointAsync(config, _opcUaGlobalOptions, _probeLogger, TimeSpan.FromSeconds(6), CancellationToken.None)
             .PipeTo(Sender);
     }