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/Redaction/SafeDefaultAuditRedactorTests.cs

@@ -5,7 +5,7 @@ using ZB.MOM.WW.ScadaBridge.Commons.Types.Audit;
 namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Redaction;
 
 /// <summary>
-/// ScadaBridge audit re-architecture stage C2 (Task 2.5) tests for
+/// Tests for
 /// <see cref="SafeDefaultAuditRedactor"/> — the minimal always-safe
 /// <see cref="ZB.MOM.WW.Audit.IAuditRedactor"/> fallback.
 /// Header-only scrub of the always-sensitive default headers inside
@@ -35,6 +35,7 @@ public class SafeDefaultAuditRedactorTests
     private static AuditDetails Details(AuditEvent evt) =>
         AuditDetailsCodec.Deserialize(evt.DetailsJson);
 
+    /// <summary>Verifies that the default sensitive headers are redacted in the request summary.</summary>
     [Fact]
     public void Redacts_DefaultSensitiveHeaders_InRequestSummary()
     {
@@ -48,6 +49,7 @@ public class SafeDefaultAuditRedactorTests
         Assert.Contains("Content-Type: application/json", d.RequestSummary!);
     }
 
+    /// <summary>Verifies that the default sensitive headers are redacted in the response summary.</summary>
     [Fact]
     public void Redacts_DefaultSensitiveHeaders_InResponseSummary()
     {
@@ -61,6 +63,7 @@ public class SafeDefaultAuditRedactorTests
         Assert.Contains("X-Other: ok", d.ResponseSummary!);
     }
 
+    /// <summary>Verifies that header names are matched case-insensitively when redacting.</summary>
     [Fact]
     public void CaseInsensitive_HeaderName_Redacted()
     {
@@ -72,6 +75,7 @@ public class SafeDefaultAuditRedactorTests
         Assert.DoesNotContain("x-y-z", Details(result).RequestSummary!);
     }
 
+    /// <summary>Verifies that a non-sensitive header is preserved unchanged.</summary>
     [Fact]
     public void NonSensitiveHeader_Preserved()
     {
@@ -84,6 +88,7 @@ public class SafeDefaultAuditRedactorTests
         Assert.Contains("Accept: application/json", d.RequestSummary!);
     }
 
+    /// <summary>Verifies that an event with null details takes the fast path and returns the same instance.</summary>
     [Fact]
     public void NullDetails_FastPath_ReturnsSameInstance()
     {
@@ -102,6 +107,7 @@ public class SafeDefaultAuditRedactorTests
         Assert.Same(evt, result);
     }
 
+    /// <summary>Verifies that malformed details JSON never causes the redactor to throw.</summary>
     [Fact]
     public void MalformedDetailsJson_NeverThrows()
     {