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.SiteEventLogging.Tests/EventLogHandlerActorTests.cs

@@ -5,7 +5,7 @@ using ZB.MOM.WW.ScadaBridge.Commons.Messages.RemoteQuery;
 namespace ZB.MOM.WW.ScadaBridge.SiteEventLogging.Tests;
 
 /// <summary>
-/// Regression tests for SiteEventLogging-010: the actor message contract of
+/// Regression tests for the actor message contract of
 /// <see cref="EventLogHandlerActor"/> was previously untested.
 /// </summary>
 public class EventLogHandlerActorTests : TestKit
@@ -14,11 +14,15 @@ public class EventLogHandlerActorTests : TestKit
     private sealed class FakeQueryService : IEventLogQueryService
     {
         private readonly Func<EventLogQueryRequest, EventLogQueryResponse> _handler;
+        /// <summary>Gets the most recent query request received.</summary>
         public EventLogQueryRequest? LastRequest { get; private set; }
 
+        /// <summary>Initializes the fake with a handler that produces query responses.</summary>
+        /// <param name="handler">The function that answers each query request.</param>
         public FakeQueryService(Func<EventLogQueryRequest, EventLogQueryResponse> handler)
             => _handler = handler;
 
+        /// <inheritdoc />
         public EventLogQueryResponse ExecuteQuery(EventLogQueryRequest request)
         {
             LastRequest = request;
@@ -49,6 +53,7 @@ public class EventLogHandlerActorTests : TestKit
         ErrorMessage: success ? null : "boom",
         Timestamp: DateTimeOffset.UtcNow);
 
+    /// <summary>Verifies that the actor replies to the sender with the query response.</summary>
     [Fact]
     public void Actor_RepliesToSender_WithQueryResponse()
     {
@@ -65,6 +70,7 @@ public class EventLogHandlerActorTests : TestKit
         Assert.Same(request, fake.LastRequest);
     }
 
+    /// <summary>Verifies that the actor passes a query-service error response on to the sender.</summary>
     [Fact]
     public void Actor_PropagatesQueryServiceErrorResponse_ToSender()
     {