feat(auditlog): NotifyDeliver rows carry the originating ExecutionId

tests/ScadaLink.Commons.Tests/Entities/NotificationEntityTests.cs

@@ -21,6 +21,21 @@ public class NotificationEntityTests
         Assert.Equal("SiteA", n.SourceSiteId);
     }
 
+    [Fact]
+    public void OriginExecutionId_DefaultsToNull_AndIsSettable()
+    {
+        // Audit Log #23: OriginExecutionId carries the originating script
+        // execution's id from the site so the dispatcher can echo it onto
+        // NotifyDeliver rows. Null for notifications submitted before the
+        // column existed; settable from the NotificationSubmit message.
+        var n = new Notification("id-1", NotificationType.Email, "ops-team", "subj", "body", "SiteA");
+        Assert.Null(n.OriginExecutionId);
+
+        var executionId = Guid.NewGuid();
+        n.OriginExecutionId = executionId;
+        Assert.Equal(executionId, n.OriginExecutionId);
+    }
+
     [Fact]
     public void Constructor_NullArguments_Throw()
     {