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.LoadHarness/Probes/SiteWireStreamHost.cs

@@ -19,7 +19,7 @@ namespace ZB.MOM.WW.ScadaBridge.LoadHarness.Probes;
 /// <para>
 /// This is the hop <see cref="StreamSubscriberProbe"/> deliberately substitutes with a
 /// controllable in-process reader (which the slow-subscriber scenario needs), and
-/// therefore the hop the original WP-4 runs never exercised: the
+/// therefore the hop the original runs never exercised: the
 /// <c>SiteStreamEventBatcher</c> pump (R2), protobuf serialization,
 /// <c>IServerStreamWriter.WriteAsync</c>, and HTTP/2 flow control. The server is built
 /// through its production DI constructor with default <see cref="CommunicationOptions"/>,
@@ -84,7 +84,8 @@ public sealed class SiteWireStreamHost : IAsyncDisposable
         return new SiteWireStreamHost(app, server, address);
     }
 
-    /// <inheritdoc />
+    /// <summary>Cancels active streams and stops and disposes the underlying listener.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public async ValueTask DisposeAsync()
     {
         // Mirrors the production shutdown ordering: cancel active streams first so