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.Security.Tests/DisableLoginRegistrationTests.cs

@@ -19,6 +19,8 @@ public class DisableLoginRegistrationTests
         return await provider.GetSchemeAsync(CookieAuthenticationDefaults.AuthenticationScheme);
     }
 
+    /// <summary>Verifies that when the disable-login flag is true, the auto-login handler is registered under the cookie scheme.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FlagTrue_RegistersAutoLoginHandlerUnderCookieScheme()
     {
@@ -26,6 +28,8 @@ public class DisableLoginRegistrationTests
         Assert.Equal(typeof(AutoLoginAuthenticationHandler), scheme!.HandlerType);
     }
 
+    /// <summary>Verifies that when the disable-login flag is false, the cookie handler is registered.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FlagFalse_RegistersCookieHandler()
     {
@@ -34,12 +38,13 @@ public class DisableLoginRegistrationTests
     }
 
     /// <summary>
-    /// When <c>disableLogin: false</c> (the production path) the M2.19 idle-timeout /
+    /// When <c>disableLogin: false</c> (the production path) the idle-timeout /
     /// role-refresh hook MUST be wired on the cookie scheme's
     /// <see cref="Microsoft.AspNetCore.Authentication.Cookies.CookieAuthenticationEvents.OnValidatePrincipal"/>.
     /// This pin-test ensures a future refactor cannot silently drop the hook without
     /// a red test.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FlagFalse_CookieScheme_OnValidatePrincipalIsWired()
     {