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/Notifications/NotificationListCrudTests.cs

@@ -23,6 +23,8 @@ public class NotificationListCrudTests
 
     private readonly PlaywrightFixture _pw;
 
+    /// <summary>Creates the test class with the shared Playwright fixture.</summary>
+    /// <param name="pw">The shared Playwright fixture.</param>
     public NotificationListCrudTests(PlaywrightFixture pw)
     {
         _pw = pw;
@@ -33,6 +35,7 @@ public class NotificationListCrudTests
     /// open it for edit, add a recipient, remove that recipient, then delete the list —
     /// asserting the delete confirm dialog, the success toast, and the row disappearing.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task Create_AddRecipient_RemoveRecipient_Delete_RoundTrips()
     {
@@ -124,6 +127,7 @@ public class NotificationListCrudTests
     /// Submits the create form with a blank name and asserts the inline 'Name required.'
     /// validation error appears and the page does not navigate away. Mutates nothing.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task CreateForm_EmptyName_ShowsInlineError()
     {