docs(tests): fix CommentChecker findings across tests/ — 13,392 → 0 (repo-wide scan clean)

Comment/XML-doc changes only:
- add summaries to ~10k test methods, fixtures, fakes and helpers
  (+ <param> on theories, <returns> on async Task methods,
  <inheritdoc/> on interface implementations the checker can resolve)
- strip ~2.6k project-tracking references (WP*, P*-*, row-NN, Task N,
  #NN, Component-0NN) from comments, keeping the explanatory text;
  reword false positives in comments only
- real docs on fakes implementing BCL/library interfaces
  (IDisposable, ILogger, IOptionsMonitor, IAsyncLifetime)
- reword the last 5 src/ false positives (CWE-1236, failures-1,
  year-0001, M365)

Only non-comment edits: four one-line nested classes split across lines
so members can carry docs. Build 0 errors / 0 warnings.

tests/ZB.MOM.WW.ScadaBridge.NotificationOutbox.Tests/ServiceRegistrationTests.cs

@@ -10,7 +10,7 @@ using ZB.MOM.WW.ScadaBridge.NotificationService;
 namespace ZB.MOM.WW.ScadaBridge.NotificationOutbox.Tests;
 
 /// <summary>
-/// Task 17: Tests for <see cref="ServiceCollectionExtensions.AddNotificationOutbox"/> — the
+/// Tests for <see cref="ServiceCollectionExtensions.AddNotificationOutbox"/> — the
 /// DI registration extension for the Notification Outbox component. The extension binds
 /// <see cref="NotificationOutboxOptions"/> from the <c>ScadaBridge:NotificationOutbox</c>
 /// configuration section and registers the channel delivery adapter(s).
@@ -44,6 +44,7 @@ public class ServiceRegistrationTests
         return services.BuildServiceProvider();
     }
 
+    /// <summary>Verifies that registration provides the notification outbox options with their defaults.</summary>
     [Fact]
     public void AddNotificationOutbox_RegistersNotificationOutboxOptions_WithDefaults()
     {
@@ -56,6 +57,7 @@ public class ServiceRegistrationTests
         Assert.Equal(100, options.DispatchBatchSize);
     }
 
+    /// <summary>Verifies that the options section name is the notification outbox configuration path.</summary>
     [Fact]
     public void AddNotificationOutbox_OptionsSection_IsTheNotificationOutboxConfigPath()
     {
@@ -64,6 +66,7 @@ public class ServiceRegistrationTests
             NotificationOutbox.ServiceCollectionExtensions.OptionsSection);
     }
 
+    /// <summary>Verifies that registration binds the notification outbox options from configuration.</summary>
     [Fact]
     public void AddNotificationOutbox_BindsNotificationOutboxOptions_FromConfiguration()
     {
@@ -86,6 +89,7 @@ public class ServiceRegistrationTests
         Assert.Equal(250, options.DispatchBatchSize);
     }
 
+    /// <summary>Verifies that registration provides the email delivery adapter.</summary>
     [Fact]
     public void AddNotificationOutbox_RegistersEmailDeliveryAdapter()
     {
@@ -98,6 +102,7 @@ public class ServiceRegistrationTests
         Assert.Equal(NotificationType.Email, adapter.Type);
     }
 
+    /// <summary>Verifies that registration provides the SMS delivery adapter.</summary>
     [Fact]
     public void AddNotificationOutbox_RegistersSmsDeliveryAdapter()
     {
@@ -110,6 +115,7 @@ public class ServiceRegistrationTests
         Assert.Equal(NotificationType.Sms, adapter.Type);
     }
 
+    /// <summary>Verifies that registration provides both adapters as notification delivery adapters.</summary>
     [Fact]
     public void AddNotificationOutbox_RegistersBothAdapters_AsINotificationDeliveryAdapter()
     {
@@ -132,6 +138,7 @@ public class ServiceRegistrationTests
         Assert.Contains(adapters, a => a is SmsNotificationDeliveryAdapter);
     }
 
+    /// <summary>Verifies that registration provides the SMS options with their defaults.</summary>
     [Fact]
     public void AddNotificationOutbox_RegistersSmsOptions_WithDefaults()
     {