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.SiteRuntime.Tests/Tracking/OperationTrackingOptionsValidatorTests.cs

@@ -11,6 +11,7 @@ namespace ZB.MOM.WW.ScadaBridge.SiteRuntime.Tests.Tracking;
 /// </summary>
 public class OperationTrackingOptionsValidatorTests
 {
+    /// <summary>Verifies that default options are valid.</summary>
     [Fact]
     public void DefaultOptions_AreValid()
     {
@@ -18,6 +19,7 @@ public class OperationTrackingOptionsValidatorTests
         Assert.True(validator.Validate(null, new OperationTrackingOptions()).Succeeded);
     }
 
+    /// <summary>Verifies that empty connection string fails.</summary>
     [Fact]
     public void EmptyConnectionString_Fails()
     {
@@ -28,6 +30,7 @@ public class OperationTrackingOptionsValidatorTests
             f => f.Contains(nameof(OperationTrackingOptions.ConnectionString), StringComparison.Ordinal));
     }
 
+    /// <summary>Verifies that zero retention days fails.</summary>
     [Fact]
     public void ZeroRetentionDays_Fails()
     {