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.DeploymentManager.Tests/FlatteningPipelineConnectionBindingTests.cs

@@ -13,7 +13,7 @@ using ZB.MOM.WW.ScadaBridge.Commons.Types.Templates;
 namespace ZB.MOM.WW.ScadaBridge.DeploymentManager.Tests;
 
 /// <summary>
-/// M2.8 (#23): proves the deploy path (FlatteningPipeline.FlattenAndValidateAsync)
+/// Proves the deploy path (FlatteningPipeline.FlattenAndValidateAsync)
 /// opts into connection-binding enforcement, so a data-sourced attribute with no
 /// binding gates the deployment as an ERROR (not just a warning), and that a binding
 /// resolving to a connection that actually exists at the target site passes.
@@ -30,6 +30,7 @@ public class FlatteningPipelineConnectionBindingTests
     private readonly ISharedSchemaRepository _sharedSchemaRepo = Substitute.For<ISharedSchemaRepository>();
     private readonly FlatteningPipeline _sut;
 
+    /// <summary>Initializes a new instance of the <c>FlatteningPipelineConnectionBindingTests</c> class.</summary>
     public FlatteningPipelineConnectionBindingTests()
     {
         _sharedSchemaRepo.ListAsync(Arg.Any<CancellationToken>())
@@ -79,6 +80,8 @@ public class FlatteningPipelineConnectionBindingTests
             .Returns([connection]);
     }
 
+    /// <summary>Verifies that flatten and validate, when data sourced attribute with no binding, reports binding error.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FlattenAndValidate_DataSourcedAttributeWithNoBinding_ReportsBindingError()
     {
@@ -92,6 +95,8 @@ public class FlatteningPipelineConnectionBindingTests
             e => e.Category == ValidationCategory.ConnectionBinding);
     }
 
+    /// <summary>Verifies that flatten and validate, when binding to existing site connection, no binding error.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FlattenAndValidate_BindingToExistingSiteConnection_NoBindingError()
     {
@@ -104,10 +109,12 @@ public class FlatteningPipelineConnectionBindingTests
             e => e.Category == ValidationCategory.ConnectionBinding);
     }
 
+    /// <summary>Verifies that flatten and validate, when binding to stale deleted connection, reports binding error.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FlattenAndValidate_BindingToStaleDeletedConnection_ReportsBindingError()
     {
-        // M2.8 (#23): FlatteningService.ApplyConnectionBindings silently drops a
+        // FlatteningService.ApplyConnectionBindings silently drops a
         // binding whose DataConnectionId doesn't resolve to any loaded site
         // DataConnection (stale / deleted connection). The flattener leaves
         // BoundDataConnectionId == null, so the validator treats the attribute as