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/Shared/ToastNotificationTests.cs

@@ -4,7 +4,7 @@ using ZB.MOM.WW.ScadaBridge.CentralUI.Components.Shared;
 namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Shared;
 
 /// <summary>
-/// Regression tests for CentralUI-010. <c>ToastNotification.AddToast</c>
+/// Regression tests for toast disposal safety. <c>ToastNotification.AddToast</c>
 /// scheduled <c>Task.Delay(dismissMs).ContinueWith(...)</c> with the result
 /// discarded; the continuation called <c>InvokeAsync(StateHasChanged)</c>. When
 /// the host page is disposed before the delay elapses, the continuation ran
@@ -14,6 +14,8 @@ namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Shared;
 /// </summary>
 public class ToastNotificationTests : BunitContext
 {
+    /// <summary>Verifies that show toast, when after disposal, is no op and schedules nothing.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ShowToast_AfterDisposal_IsNoOp_AndSchedulesNothing()
     {
@@ -29,6 +31,8 @@ public class ToastNotificationTests : BunitContext
         Assert.Equal(0, cut.Instance.ToastCount);
     }
 
+    /// <summary>Verifies that auto dismiss, when after disposal, does not throw unobserved exception.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task AutoDismiss_AfterDisposal_DoesNotThrowUnobservedException()
     {
@@ -63,6 +67,8 @@ public class ToastNotificationTests : BunitContext
         Assert.Empty(unobserved);
     }
 
+    /// <summary>Verifies that auto dismiss, when before disposal, still removes toast.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task AutoDismiss_BeforeDisposal_StillRemovesToast()
     {