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.InboundAPI.Tests/ScriptArtifactChangeSubscriberTests.cs

@@ -20,13 +20,16 @@ public class ScriptArtifactChangeSubscriberTests
     private sealed class RecordingBus : IScriptArtifactChangeBus
     {
         private readonly List<Action<ScriptArtifactsChanged>> _handlers = new();
+        /// <summary>Gets the number of currently registered handlers.</summary>
         public int SubscriberCount => _handlers.Count;
 
+        /// <inheritdoc />
         public void Publish(ScriptArtifactsChanged notification)
         {
             foreach (var handler in _handlers.ToArray()) handler(notification);
         }
 
+        /// <inheritdoc />
         public IDisposable Subscribe(Action<ScriptArtifactsChanged> handler)
         {
             _handlers.Add(handler);
@@ -35,6 +38,7 @@ public class ScriptArtifactChangeSubscriberTests
 
         private sealed class Token(Action dispose) : IDisposable
         {
+            /// <summary>Releases the resources used by this instance.</summary>
             public void Dispose() => dispose();
         }
     }
@@ -55,6 +59,8 @@ public class ScriptArtifactChangeSubscriberTests
     private static ScriptArtifactsChanged ApiMethodChanged(params string[] names) =>
         new(ScriptArtifactKinds.ApiMethod, names, "BundleImport", DateTimeOffset.UtcNow);
 
+    /// <summary>Verifies that an ApiMethod publish invalidates the cached handler without waiting for the revision-check self-heal.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ApiMethodPublish_InvalidatesCachedHandler_WithoutRevisionCheckSelfHeal()
     {
@@ -77,6 +83,8 @@ public class ScriptArtifactChangeSubscriberTests
         Assert.Contains("1", after.ResultJson); // recompiled from the fresh row — invalidation, not self-heal
     }
 
+    /// <summary>Verifies that an ApiMethod publish purges the known-bad record.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ApiMethodPublish_PurgesKnownBadRecord()
     {
@@ -92,6 +100,8 @@ public class ScriptArtifactChangeSubscriberTests
         Assert.Equal(0, _executor.KnownBadMethodCount);
     }
 
+    /// <summary>Verifies that non-ApiMethod artifact kinds are ignored.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task NonApiMethodKinds_AreIgnored()
     {
@@ -110,6 +120,8 @@ public class ScriptArtifactChangeSubscriberTests
         Assert.Contains("99", result.ResultJson); // pinned handler untouched
     }
 
+    /// <summary>Verifies that stopping the subscriber unsubscribes it from the bus.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task StopAsync_Unsubscribes()
     {
@@ -123,10 +135,11 @@ public class ScriptArtifactChangeSubscriberTests
     }
 
     /// <summary>
-    /// WP2.6b: an ApiMethod change notification must also drop the resolved-row cache
+    /// An ApiMethod change notification must also drop the resolved-row cache
     /// entry (not just the compiled handler) — proving EndpointExtensions' next lookup
     /// re-fetches instead of serving a stale cached row for the rest of the TTL window.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ApiMethodPublish_InvalidatesResolvedMethodCache()
     {
@@ -150,6 +163,8 @@ public class ScriptArtifactChangeSubscriberTests
         Assert.Equal(2, fetchCount); // cache entry was dropped — re-fetched
     }
 
+    /// <summary>Verifies that a null bus is tolerated and the subscriber does nothing.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task NullBus_NoOps()
     {