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/Actors/CertStoreActorTests.cs

@@ -21,6 +21,7 @@ public class CertStoreActorTests : TestKit, IDisposable
     private readonly string _rejectedDir;
     private readonly OpcUaGlobalOptions _options;
 
+    /// <summary>Initializes a new instance of the <see cref="CertStoreActorTests"/> class.</summary>
     public CertStoreActorTests()
     {
         var root = Path.Combine(Path.GetTempPath(), "ScadaBridge-CertStoreTests", Guid.NewGuid().ToString("N"));
@@ -33,6 +34,7 @@ public class CertStoreActorTests : TestKit, IDisposable
         };
     }
 
+    /// <inheritdoc />
     void IDisposable.Dispose()
     {
         Shutdown();
@@ -69,6 +71,7 @@ public class CertStoreActorTests : TestKit, IDisposable
         return (Convert.ToBase64String(der), cert.Thumbprint);
     }
 
+    /// <summary>Verifies the case: write, then List, then Remove, round Trips.</summary>
     [Fact]
     public void Write_ThenList_ThenRemove_RoundTrips()
     {
@@ -106,6 +109,7 @@ public class CertStoreActorTests : TestKit, IDisposable
         emptyAck.Certs!.Should().NotContain(c => c.Thumbprint == thumbprint);
     }
 
+    /// <summary>Verifies the case: export Local Trusted Certs, returns Thumbprint And Der Bytes.</summary>
     [Fact]
     public void ExportLocalTrustedCerts_ReturnsThumbprintAndDerBytes()
     {
@@ -127,6 +131,7 @@ public class CertStoreActorTests : TestKit, IDisposable
         entry.DerBytes.Should().Equal(expectedDer);
     }
 
+    /// <summary>Verifies the case: write, invalid Base64, returns Failure Ack.</summary>
     [Fact]
     public void Write_InvalidBase64_ReturnsFailureAck()
     {
@@ -138,6 +143,7 @@ public class CertStoreActorTests : TestKit, IDisposable
         ack.Error.Should().NotBeNullOrEmpty();
     }
 
+    /// <summary>Verifies the case: remove, missing Cert, is No Op Success.</summary>
     [Fact]
     public void Remove_MissingCert_IsNoOpSuccess()
     {
@@ -148,6 +154,7 @@ public class CertStoreActorTests : TestKit, IDisposable
         ack.Success.Should().BeTrue("removing an absent cert is an idempotent no-op");
     }
 
+    /// <summary>Verifies the case: write, path Traversal Thumbprint, rejected Without Touching Filesystem.</summary>
     [Fact]
     public void Write_PathTraversalThumbprint_RejectedWithoutTouchingFilesystem()
     {
@@ -167,6 +174,7 @@ public class CertStoreActorTests : TestKit, IDisposable
             "the actor must not write outside the trusted-store directory");
     }
 
+    /// <summary>Verifies the case: remove, path Traversal Thumbprint, rejected Without Touching Filesystem.</summary>
     [Fact]
     public void Remove_PathTraversalThumbprint_RejectedWithoutTouchingFilesystem()
     {