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.CentralUI.Tests/Shared/TemplateFolderTreeRevealKeysTests.cs

@@ -10,6 +10,7 @@ namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Shared;
 /// </summary>
 public class TemplateFolderTreeRevealKeysTests : BunitContext
 {
+    /// <summary>Initializes a new instance of the <c>TemplateFolderTreeRevealKeysTests</c> class.</summary>
     public TemplateFolderTreeRevealKeysTests()
     {
         JSInterop.Mode = JSRuntimeMode.Loose;
@@ -25,6 +26,8 @@ public class TemplateFolderTreeRevealKeysTests : BunitContext
         return (new() { a, b, other }, new() { t7, t8 });
     }
 
+    /// <summary>Verifies that a change to extra node metadata rebuilds the forest and survives filtering.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void ExtraNodeMetadataChange_RebuildsAndSurvivesFiltering()
     {
@@ -45,6 +48,8 @@ public class TemplateFolderTreeRevealKeysTests : BunitContext
         Assert.Equal("inherited:2", node.Key);
     }
 
+    /// <summary>Verifies that repeated parameters preserve the forest while an in-place rename rebuilds it.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void RepeatedParameters_PreserveForest_ButInPlaceRenameRebuilds()
     {
@@ -60,6 +65,8 @@ public class TemplateFolderTreeRevealKeysTests : BunitContext
         Assert.Contains("Renamed", cut.Markup);
     }
 
+    /// <summary>Verifies that all folders start collapsed when no reveal keys are given.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void WithoutRevealKeys_AllFoldersStartCollapsed()
     {
@@ -69,6 +76,8 @@ public class TemplateFolderTreeRevealKeysTests : BunitContext
         Assert.DoesNotContain("Elsewhere", cut.Markup);
     }
 
+    /// <summary>Verifies that reveal keys expand only the ancestors of the listed template.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void RevealKeys_ExpandsOnlyTheAncestorsOfTheListedTemplate()
     {
@@ -80,6 +89,8 @@ public class TemplateFolderTreeRevealKeysTests : BunitContext
         Assert.DoesNotContain("Elsewhere", cut.Markup); // Other untouched
     }
 
+    /// <summary>Verifies that an active filter wins over reveal keys.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void ActiveFilter_WinsOverRevealKeys()
     {