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.Host.Tests/WindowsServiceTests.cs

@@ -3,11 +3,12 @@ using System.Reflection;
 namespace ZB.MOM.WW.ScadaBridge.Host.Tests;
 
 /// <summary>
-/// WP-17: Tests for Windows Service support.
+/// Tests for Windows Service support.
 /// Verifies UseWindowsService() is called in Program.cs.
 /// </summary>
 public class WindowsServiceTests
 {
+    /// <summary>Verifies that Program.cs calls UseWindowsService.</summary>
     [Fact]
     public void ProgramCs_CallsUseWindowsService()
     {
@@ -25,6 +26,7 @@ public class WindowsServiceTests
             $"Expected UseWindowsService() to be called at least twice (Central and Site paths), found {occurrences} occurrence(s)");
     }
 
+    /// <summary>Verifies that the host project references the Windows Services hosting package.</summary>
     [Fact]
     public void HostProject_ReferencesWindowsServicesPackage()
     {