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.SiteRuntime.Tests/TestSupport/TestOptionsMonitor.cs

@@ -5,7 +5,7 @@ namespace ZB.MOM.WW.ScadaBridge.SiteRuntime.Tests.TestSupport;
 /// <summary>
 /// Minimal <see cref="IOptionsMonitor{TOptions}"/> test double with a mutable
 /// <see cref="Set"/> so a test can flip a value mid-run and assert the NEXT read observes it
-/// — used by the WP3.2 hot-toggle tests
+/// — used by the hot-toggle tests
 /// (<c>SiteRuntimeOptions.PerRunScriptEvents</c>/<c>PerRunScriptEventScripts</c> are read via
 /// <c>IOptionsMonitor.CurrentValue</c> per run specifically so they don't need a restart).
 /// Avoids depending on <c>Microsoft.Extensions.Configuration</c>'s reload-token plumbing,
@@ -15,15 +15,20 @@ public sealed class TestOptionsMonitor<T>(T initial) : IOptionsMonitor<T>
 {
     private T _current = initial;
 
-    /// <inheritdoc />
+    /// <summary>Gets the current value, as most recently set by <see cref="Set"/>.</summary>
     public T CurrentValue => _current;
 
-    /// <inheritdoc />
+    /// <summary>Returns the current value regardless of the requested name.</summary>
+    /// <param name="name">The named-options key, ignored by this double.</param>
+    /// <returns>The current value.</returns>
     public T Get(string? name) => _current;
 
-    /// <inheritdoc />
+    /// <summary>Change notifications are not supported by this double; no registration is made.</summary>
+    /// <param name="listener">The change listener, ignored by this double.</param>
+    /// <returns>Always <see langword="null"/>.</returns>
     public IDisposable? OnChange(Action<T, string?> listener) => null;
 
     /// <summary>Replaces the current value, observed by the next <see cref="CurrentValue"/> read.</summary>
+    /// <param name="value">The new value.</param>
     public void Set(T value) => _current = value;
 }