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.ManagementService.Tests/TransportGateTests.cs

@@ -22,6 +22,7 @@ public class TransportGateTests : TestKit, IDisposable
     private readonly IBundleImporter _importer;
     private readonly ServiceCollection _services;
 
+    /// <summary>Initializes the test with a substituted bundle importer registered in the service collection.</summary>
     public TransportGateTests()
     {
         _importer = Substitute.For<IBundleImporter>();
@@ -40,8 +41,11 @@ public class TransportGateTests : TestKit, IDisposable
         new(new AuthenticatedUser("admin", "Admin", new[] { "Administrator" }, Array.Empty<string>()),
             command, Guid.NewGuid().ToString("N"));
 
+    /// <inheritdoc />
     void IDisposable.Dispose() => Shutdown();
 
+    /// <summary>Verifies that concurrent import-bundle commands are single-flighted.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ImportBundle_ConcurrentCommands_AreSingleFlighted()
     {