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/Admin/ApiKeyCrudTests.cs

@@ -32,6 +32,9 @@ public sealed class ApiKeyCrudTests : IClassFixture<ApiSurfaceFixture>
     private readonly PlaywrightFixture _fixture;
     private readonly ApiSurfaceFixture _api;
 
+    /// <summary>Creates the test class with the shared Playwright and API surface fixtures.</summary>
+    /// <param name="fixture">The shared Playwright fixture.</param>
+    /// <param name="api">The API surface fixture.</param>
     public ApiKeyCrudTests(PlaywrightFixture fixture, ApiSurfaceFixture api)
     {
         _fixture = fixture;
@@ -44,6 +47,7 @@ public sealed class ApiKeyCrudTests : IClassFixture<ApiSurfaceFixture>
     /// adjacent "Copy" button. MUTATES — the created key is deleted via the CLI in a
     /// <c>finally</c> (resolve by name, best-effort delete) so nothing leaks.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task Create_RevealsOneTimeToken()
     {
@@ -104,6 +108,7 @@ public sealed class ApiKeyCrudTests : IClassFixture<ApiSurfaceFixture>
     /// literal <c>"Name is required."</c> message in <c>div.text-danger</c>; no token panel
     /// appears, so nothing is created and there is no teardown.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task Create_EmptyName_ShowsValidationError()
     {
@@ -136,6 +141,7 @@ public sealed class ApiKeyCrudTests : IClassFixture<ApiSurfaceFixture>
     /// <c>div.text-danger</c>; no token panel appears, so nothing is created and there is no
     /// teardown.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task Create_NoMethods_ShowsValidationError()
     {
@@ -193,6 +199,7 @@ public sealed class ApiKeyCrudTests : IClassFixture<ApiSurfaceFixture>
     /// cell: it must appear after Disable and be gone after Enable. The CLI-created key is deleted
     /// in a <c>finally</c> (best-effort) so nothing leaks.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task ToggleEnabled_TransitionsDisabledBadge()
     {
@@ -251,6 +258,7 @@ public sealed class ApiKeyCrudTests : IClassFixture<ApiSurfaceFixture>
     /// gone. The CLI delete in the <c>finally</c> is an idempotent safety net (no-op if the UI already
     /// removed it).
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [SkippableFact]
     public async Task Delete_WithConfirm_RemovesRow()
     {