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/Auth/UiAuditRegressionTests.cs

@@ -22,6 +22,9 @@ namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Auth;
 
 public class UiAuditRegressionTests : BunitContext
 {
+    /// <summary>Verifies that creating an LDAP mapping from the UI persists its audit row with the generated mapping id, or rolls back when the audit write fails.</summary>
+    /// <param name="failAudit">Whether the audit write is made to fail.</param>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Theory]
     [InlineData(false)]
     [InlineData(true)]
@@ -90,6 +93,7 @@ public class UiAuditRegressionTests : BunitContext
 
     private sealed class StaticAuth(System.Security.Claims.ClaimsPrincipal principal) : AuthenticationStateProvider
     {
+        /// <inheritdoc />
         public override Task<AuthenticationState> GetAuthenticationStateAsync() => Task.FromResult(new AuthenticationState(principal));
     }
 }