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.Communication.Tests/ActiveNodeEvaluatorTests.cs

@@ -11,6 +11,8 @@ public class ActiveNodeEvaluatorTests : IAsyncLifetime
 {
     private ActorSystem? _system;
 
+    /// <summary>Starts the test actor system and cluster before the tests run.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public async Task InitializeAsync()
     {
         var port = FreePort();
@@ -31,8 +33,11 @@ akka {{
             await Task.Delay(100);
     }
 
+    /// <summary>Terminates the test actor system.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public async Task DisposeAsync() { if (_system != null) await _system.Terminate(); }
 
+    /// <summary>Verifies that the sole Up member is considered the oldest Up member.</summary>
     [Fact]
     public void SelfIsOldestUp_SoleUpMember_ReturnsTrue()
     {
@@ -41,6 +46,7 @@ akka {{
         Assert.True(ActiveNodeEvaluator.SelfIsOldestUp(cluster, "site-x"));
     }
 
+    /// <summary>Verifies that a node that does not hold the requested role is not considered the oldest Up member.</summary>
     [Fact]
     public void SelfIsOldestUp_RoleNotHeld_ReturnsFalse()
     {