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.AuditLog.Tests/Central/SiteAuditReconciliationOptionsValidatorTests.cs

@@ -12,6 +12,9 @@ namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Central;
 /// </summary>
 public class SiteAuditReconciliationOptionsValidatorTests
 {
+    /// <summary>Verifies that the batch size is valid only up to the RPC ceiling.</summary>
+    /// <param name="size">The batch size under test.</param>
+    /// <param name="valid">Whether the batch size is expected to validate.</param>
     [Theory]
     [InlineData(1, true)]
     [InlineData(2000, true)]
@@ -21,6 +24,7 @@ public class SiteAuditReconciliationOptionsValidatorTests
         => Assert.Equal(valid, new SiteAuditReconciliationOptionsValidator().Validate(null,
             new SiteAuditReconciliationOptions { BatchSize = size }).Succeeded);
 
+    /// <summary>Verifies that the default options pass validation.</summary>
     [Fact]
     public void DefaultOptions_AreValid()
     {
@@ -28,6 +32,7 @@ public class SiteAuditReconciliationOptionsValidatorTests
         Assert.True(validator.Validate(null, new SiteAuditReconciliationOptions()).Succeeded);
     }
 
+    /// <summary>Verifies that a zero reconciliation interval fails validation.</summary>
     [Fact]
     public void ZeroReconciliationInterval_Fails()
     {
@@ -39,6 +44,7 @@ public class SiteAuditReconciliationOptionsValidatorTests
             f => f.Contains(nameof(SiteAuditReconciliationOptions.ReconciliationIntervalSeconds), StringComparison.Ordinal));
     }
 
+    /// <summary>Verifies that a zero batch size fails validation.</summary>
     [Fact]
     public void ZeroBatchSize_Fails()
     {
@@ -50,6 +56,7 @@ public class SiteAuditReconciliationOptionsValidatorTests
             f => f.Contains(nameof(SiteAuditReconciliationOptions.BatchSize), StringComparison.Ordinal));
     }
 
+    /// <summary>Verifies that a zero stalled-cycle threshold fails validation.</summary>
     [Fact]
     public void ZeroStalledCycles_Fails()
     {