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.PlaywrightTests/Design/M9SurfaceTests.cs

@@ -6,7 +6,7 @@ using Xunit;
 namespace ZB.MOM.WW.ScadaBridge.CentralUI.PlaywrightTests.Design;
 
 /// <summary>
-/// Browser-level coverage for the M9 design surfaces, run against the live dev cluster:
+/// Browser-level coverage for the design surfaces, run against the live dev cluster:
 /// <list type="bullet">
 ///   <item>the <c>/design/templates</c> tree search filter (TemplateFolderTree pruning),</item>
 ///   <item>the <c>/design/schema-library</c> page (render-smoke + UI create→delete round-trip),</item>
@@ -22,6 +22,8 @@ public class M9SurfaceTests
 {
     private readonly PlaywrightFixture _pw;
 
+    /// <summary>Initializes a new instance of the test class.</summary>
+    /// <param name="pw">The shared Playwright fixture.</param>
     public M9SurfaceTests(PlaywrightFixture pw)
     {
         _pw = pw;
@@ -34,6 +36,7 @@ public class M9SurfaceTests
     /// DOM. The filter rebuilds <c>_visibleRoots</c> from matches only — non-matches are gone,
     /// not CSS-hidden — so a <c>ToHaveCountAsync(0)</c> on the non-match is the correct assertion.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task TemplateSearch_FiltersTree()
     {
@@ -90,6 +93,7 @@ public class M9SurfaceTests
     /// the SchemaBuilder editor, and the success/delete toasts all render with no circuit crash.
     /// The DB safety-net <c>finally</c> only fires if the UI delete failed mid-flow.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task SchemaLibrary_CreateDelete_RoundTrips()
     {
@@ -157,6 +161,7 @@ public class M9SurfaceTests
     /// sites exist on the live cluster, so the picker (rather than the "no other site" fallback)
     /// renders.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task MoveConnectionDialog_OpensWithSitePicker()
     {