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/NotificationOutboxActorIngestTests.cs

@@ -14,7 +14,7 @@ using ZB.MOM.WW.ScadaBridge.NotificationOutbox.Tests.TestSupport;
 namespace ZB.MOM.WW.ScadaBridge.NotificationOutbox.Tests;
 
 /// <summary>
-/// Task 13: Tests for the <see cref="NotificationOutboxActor"/> ingest path — building a
+/// Tests for the <see cref="NotificationOutboxActor"/> ingest path — building a
 /// <see cref="Notification"/> from a <see cref="NotificationSubmit"/>, persisting it via
 /// <see cref="INotificationOutboxRepository.InsertIfNotExistsAsync"/>, and acking the sender.
 /// </summary>
@@ -59,6 +59,7 @@ public class NotificationOutboxActorIngestTests : TestKit
             SourceNode: sourceNode);
     }
 
+    /// <summary>Verifies that a notification submit persists the mapped notification and acks it as accepted.</summary>
     [Fact]
     public void NotificationSubmit_PersistsMappedNotification_AndAcksAccepted()
     {
@@ -90,10 +91,11 @@ public class NotificationOutboxActorIngestTests : TestKit
             Arg.Any<CancellationToken>());
     }
 
+    /// <summary>Verifies that the origin execution id is copied onto the persisted notification.</summary>
     [Fact]
     public void NotificationSubmit_CopiesOriginExecutionId_OntoPersistedNotification()
     {
-        // Audit Log #23: the originating script execution's id rides on the
+        // The originating script execution's id rides on the
         // NotificationSubmit and must be persisted on the Notification row so
         // the dispatcher can later echo it onto NotifyDeliver audit rows.
         _repository.InsertIfNotExistsAsync(Arg.Any<Notification>(), Arg.Any<CancellationToken>())
@@ -110,6 +112,7 @@ public class NotificationOutboxActorIngestTests : TestKit
             Arg.Any<CancellationToken>());
     }
 
+    /// <summary>Verifies that a null origin execution id is persisted as null.</summary>
     [Fact]
     public void NotificationSubmit_NullOriginExecutionId_PersistsNull()
     {
@@ -126,6 +129,7 @@ public class NotificationOutboxActorIngestTests : TestKit
             Arg.Any<CancellationToken>());
     }
 
+    /// <summary>Verifies that the origin parent execution id is copied onto the persisted notification.</summary>
     [Fact]
     public void NotificationSubmit_CopiesOriginParentExecutionId_OntoPersistedNotification()
     {
@@ -146,6 +150,7 @@ public class NotificationOutboxActorIngestTests : TestKit
             Arg.Any<CancellationToken>());
     }
 
+    /// <summary>Verifies that a null origin parent execution id is persisted as null.</summary>
     [Fact]
     public void NotificationSubmit_NullOriginParentExecutionId_PersistsNull()
     {
@@ -162,6 +167,7 @@ public class NotificationOutboxActorIngestTests : TestKit
             Arg.Any<CancellationToken>());
     }
 
+    /// <summary>Verifies that a duplicate submit, where the repository returns false, is still acked as accepted.</summary>
     [Fact]
     public void DuplicateSubmit_RepositoryReturnsFalse_StillAcksAccepted()
     {
@@ -178,6 +184,7 @@ public class NotificationOutboxActorIngestTests : TestKit
         Assert.Null(ack.Error);
     }
 
+    /// <summary>Verifies that a repository exception results in an ack that is not accepted and carries the error.</summary>
     [Fact]
     public void RepositoryThrows_AcksNotAcceptedWithError()
     {
@@ -195,10 +202,11 @@ public class NotificationOutboxActorIngestTests : TestKit
         Assert.Contains("database unavailable", ack.Error);
     }
 
+    /// <summary>Verifies that the source node is copied onto the persisted notification.</summary>
     [Fact]
     public void NotificationSubmit_CopiesSourceNode_OntoPersistedNotification()
     {
-        // SourceNode-stamping (Task 13): the originating site's node name (node-a/node-b)
+        // SourceNode stamping: the originating site's node name (node-a/node-b)
         // rides on the NotificationSubmit and must be persisted on the Notification row so
         // central observers (KPIs, audit drill-ins, ops dashboards) can see which node
         // emitted the notification.
@@ -215,6 +223,7 @@ public class NotificationOutboxActorIngestTests : TestKit
             Arg.Any<CancellationToken>());
     }
 
+    /// <summary>Verifies that a null source node is persisted as null.</summary>
     [Fact]
     public void NotificationSubmit_NullSourceNode_PersistsNull()
     {