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/NotificationOutboxActorRetryEmissionTests.cs

@@ -15,7 +15,7 @@ using ZB.MOM.WW.ScadaBridge.NotificationOutbox.Delivery;
 namespace ZB.MOM.WW.ScadaBridge.NotificationOutbox.Tests;
 
 /// <summary>
-/// Task 13 (arch-review 04) — verifies that an operator-initiated Retry on a parked
+/// Verifies that an operator-initiated Retry on a parked
 /// notification emits a <see cref="AuditChannel.Notification"/>/<see cref="AuditKind.NotifyDeliver"/>
 /// audit row with status <see cref="AuditStatus.Submitted"/> and the operator as
 /// <c>Actor</c>, closing the forensic gap (previously the lifecycle read
@@ -31,9 +31,12 @@ public class NotificationOutboxActorRetryEmissionTests : TestKit
 
     private sealed class RecordingCentralAuditWriter : ICentralAuditWriter
     {
+        /// <summary>Gets the audit rows recorded by the writer.</summary>
         public List<AuditRowProjection.AuditRowValues> Events { get; } = new();
+        /// <summary>Gets or sets a callback invoked on each write, allowing a test to simulate a failing writer.</summary>
         public Func<AuditEvent, Task>? OnWrite { get; set; }
 
+        /// <inheritdoc />
         public Task WriteAsync(AuditEvent evt, CancellationToken ct = default)
         {
             lock (Events)
@@ -85,6 +88,7 @@ public class NotificationOutboxActorRetryEmissionTests : TestKit
         }
     }
 
+    /// <summary>Verifies that retrying a parked notification emits a submitted notify-deliver audit row carrying the operator.</summary>
     [Fact]
     public void Retry_OnParked_Emits_Submitted_NotifyDeliver_AuditRow_With_Operator()
     {
@@ -110,6 +114,7 @@ public class NotificationOutboxActorRetryEmissionTests : TestKit
         });
     }
 
+    /// <summary>Verifies that discarding a parked notification emits a discarded audit row carrying the operator.</summary>
     [Fact]
     public void Discard_OnParked_Emits_Discarded_AuditRow_With_Operator()
     {
@@ -130,6 +135,7 @@ public class NotificationOutboxActorRetryEmissionTests : TestKit
         });
     }
 
+    /// <summary>Verifies that an audit write failure does not fail the retry.</summary>
     [Fact]
     public void Retry_AuditFailure_DoesNotFail_TheRetry()
     {