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.Transport.IntegrationTests/Export/BundleExporterTests.cs

@@ -35,6 +35,7 @@ public sealed class BundleExporterTests : IDisposable
 {
     private readonly ServiceProvider _provider;
 
+    /// <summary>Initializes the test class with an in-memory database and the exporter under test.</summary>
     public BundleExporterTests()
     {
         var services = new ServiceCollection();
@@ -64,7 +65,7 @@ public sealed class BundleExporterTests : IDisposable
             sp.GetRequiredService<DbContextOptions<ScadaBridgeDbContext>>(),
             sp.GetRequiredService<IDataProtectionProvider>()));
 
-        // Repositories the resolver pulls from. M8 (B4): the resolver now injects
+        // Repositories the resolver pulls from. The resolver now injects
         // ISiteRepository to walk the site/data-connection/instance closure, so it
         // must be registered or the BuildServiceProvider-time graph resolution for
         // DependencyResolver fails.
@@ -87,8 +88,11 @@ public sealed class BundleExporterTests : IDisposable
         _provider = services.BuildServiceProvider();
     }
 
+    /// <summary>Releases the resources held by this instance.</summary>
     public void Dispose() => _provider.Dispose();
 
+    /// <summary>Verifies that exporting writes an audit event and returns a valid bundle.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ExportAsync_writes_audit_event_and_returns_valid_bundle()
     {
@@ -214,6 +218,8 @@ public sealed class BundleExporterTests : IDisposable
         }
     }
 
+    /// <summary>Verifies that exporting emits the selected SMS config with its secret and the summary count.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ExportAsync_emits_selected_sms_config_with_secret_and_summary_count()
     {
@@ -286,6 +292,8 @@ public sealed class BundleExporterTests : IDisposable
         Assert.Equal("super-secret-token", token);
     }
 
+    /// <summary>Verifies that exporting with a passphrase produces an encrypted bundle.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ExportAsync_with_passphrase_produces_encrypted_bundle()
     {
@@ -369,6 +377,8 @@ public sealed class BundleExporterTests : IDisposable
         }
     }
 
+    /// <summary>Verifies that exporting with a site selection packs the sites, data connections and instances.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ExportAsync_with_site_selection_packs_sites_dataconnections_and_instances()
     {
@@ -464,7 +474,7 @@ public sealed class BundleExporterTests : IDisposable
         Assert.Equal("NORTH-01.Pump1", content.Instances[0].UniqueName);
         Assert.Equal("PumpStation", content.Instances[0].TemplateName);
         // The instance carries its binding, and the manifest dep-edge resolves the
-        // owning site by identifier (I1) — Site:NORTH-01, never Site:<rawId>.
+        // owning site by identifier (I1) — the site's identifier string, never the raw id.
         Assert.Single(content.Instances[0].ConnectionBindings);
         var instanceEntry = Assert.Single(
             manifest.Contents,
@@ -473,6 +483,8 @@ public sealed class BundleExporterTests : IDisposable
         Assert.DoesNotContain(instanceEntry.DependsOn, d => d == $"Site:{siteId}");
     }
 
+    /// <summary>Verifies that a directly selected instance records its owning site by identifier.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ExportAsync_directly_selected_instance_records_owning_site_by_identifier()
     {