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.SiteCallAudit.Tests/SiteCallAuditOptionsValidatorTests.cs

@@ -16,6 +16,9 @@ public class SiteCallAuditOptionsValidatorTests
     private static ValidateOptionsResult Validate(SiteCallAuditOptions options) =>
         new SiteCallAuditOptionsValidator().Validate(Options.DefaultName, options);
 
+    /// <summary>Verifies that the reconciliation batch size is valid only up to the RPC ceiling.</summary>
+    /// <param name="size">The reconciliation batch size under test.</param>
+    /// <param name="valid">Whether the batch size is expected to pass validation.</param>
     [Theory]
     [InlineData(1, true)]
     [InlineData(2000, true)]
@@ -24,6 +27,7 @@ public class SiteCallAuditOptionsValidatorTests
     public void ReconciliationBatchSize_MatchesRpcCeiling(int size, bool valid)
         => Assert.Equal(valid, Validate(new SiteCallAuditOptions { ReconciliationBatchSize = size }).Succeeded);
 
+    /// <summary>Verifies that the default options are valid.</summary>
     [Fact]
     public void DefaultOptions_AreValid()
     {
@@ -31,6 +35,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.True(result.Succeeded, result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero stuck-age threshold is rejected.</summary>
     [Fact]
     public void ZeroStuckAgeThreshold_IsRejected()
     {
@@ -39,6 +44,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.Contains("StuckAgeThreshold", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero KPI interval is rejected.</summary>
     [Fact]
     public void ZeroKpiInterval_IsRejected()
     {
@@ -47,6 +53,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.Contains("KpiInterval", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero relay timeout is rejected.</summary>
     [Fact]
     public void ZeroRelayTimeout_IsRejected()
     {
@@ -55,6 +62,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.Contains("RelayTimeout", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero reconciliation interval is rejected.</summary>
     [Fact]
     public void ZeroReconciliationInterval_IsRejected()
     {
@@ -63,6 +71,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.Contains("ReconciliationInterval", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero reconciliation batch size is rejected.</summary>
     [Fact]
     public void ZeroReconciliationBatchSize_IsRejected()
     {
@@ -71,6 +80,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.Contains("ReconciliationBatchSize", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero purge interval is rejected.</summary>
     [Fact]
     public void ZeroPurgeInterval_IsRejected()
     {
@@ -79,6 +89,7 @@ public class SiteCallAuditOptionsValidatorTests
         Assert.Contains("PurgeInterval", result.FailureMessage);
     }
 
+    /// <summary>Verifies that zero retention days is rejected.</summary>
     [Fact]
     public void ZeroRetentionDays_IsRejected()
     {