test(sms): regression tests for code-review fixes

Lock the behaviors changed by the review-fix commit + the security invariants:

- ManagementActorTests: UpdateSms/SmtpConfig now require Administrator (updated the
  existing success cases from Designer); + UpdateSmsConfig_WithDesignerRole_Returns
  Unauthorized and _WithEmptyAuthToken_PreservesExistingToken regression tests.
- SecretEncryptionTests: SmsConfiguration.AuthToken stored-encrypted round-trip +
  null round-trip (AccountSid stays plaintext) — guards ApplySecretColumnEncryption.
- ArtifactDiffTests: CompareSmsConfiguration New/Identical/Modified + the secret
  presence-only invariant (value never echoed, presence-flip shows <present> only).
- UpdateCommandContractTests: notification sms update core fields Required, --auth-token optional.
- NotificationListsPageTests: SMS recipient badge shows phone, not "Name <>".
- NotificationOutboxActorDispatchTests: SMS-typed notification routes to the SMS
  adapter (StubAdapter.Type made configurable), not the Email adapter.
- NotificationRecipientTests (new): ForEmail/ForSms + public-ctor invariants.

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/Pages/NotificationListsPageTests.cs

@@ -124,6 +124,35 @@ public class NotificationListsPageTests : BunitContext
         });
     }
 
+    [Fact]
+    public void SmsListRecipientBadge_ShowsPhoneNumber_NotEmptyAngleBrackets()
+    {
+        // CentralUI-NNN regression: an SMS recipient carries a PhoneNumber and a null
+        // EmailAddress. The badge must render the phone, not the email-shaped "Name <>".
+        var repo = Substitute.For<INotificationRepository>();
+        repo.GetAllNotificationListsAsync()
+            .Returns(Task.FromResult<IReadOnlyList<NotificationList>>(
+                new List<NotificationList>
+                {
+                    new("SMS Alerts") { Id = 7, Type = NotificationType.Sms }
+                }));
+        repo.GetRecipientsByListIdAsync(7)
+            .Returns(Task.FromResult<IReadOnlyList<NotificationRecipient>>(
+                new List<NotificationRecipient> { NotificationRecipient.ForSms("Jane", "+15551234567") }));
+        Services.AddSingleton(repo);
+        WireAuthAndDialog();
+
+        var cut = Render<NotificationListsPage>();
+
+        cut.WaitForAssertion(() =>
+        {
+            Assert.Contains("+15551234567", cut.Markup);
+            // The bug rendered an empty contact field ("Jane <>") for SMS recipients.
+            Assert.DoesNotContain("Jane &lt;&gt;", cut.Markup);
+            Assert.DoesNotContain("Jane <>", cut.Markup);
+        });
+    }
+
     [Fact]
     public void RendersTypeColumn_Email()
     {