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.Commons.Tests/Entities/TemplateFolderTests.cs

@@ -5,6 +5,7 @@ namespace ZB.MOM.WW.ScadaBridge.Commons.Tests.Entities;
 
 public class TemplateFolderTests
 {
+    /// <summary>Verifies that the constructor sets the folder name.</summary>
     [Fact]
     public void Constructor_SetsName()
     {
@@ -15,12 +16,14 @@ public class TemplateFolderTests
         Assert.Equal(0, folder.SortOrder);
     }
 
+    /// <summary>Verifies that the constructor throws when the name is null.</summary>
     [Fact]
     public void Constructor_NullName_Throws()
     {
         Assert.Throws<ArgumentNullException>(() => new TemplateFolder(null!));
     }
 
+    /// <summary>Verifies that a template's folder id defaults to null.</summary>
     [Fact]
     public void Template_FolderId_DefaultsToNull()
     {