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/ServiceWiringTests.cs

@@ -7,7 +7,7 @@ using ZB.MOM.WW.LocalDb;
 namespace ZB.MOM.WW.ScadaBridge.SiteEventLogging.Tests;
 
 /// <summary>
-/// Regression tests for SiteEventLogging-007: the purge and query services must not
+/// Regression tests: the purge and query services must not
 /// downcast an injected <see cref="ISiteEventLogger"/> to the concrete type. They now
 /// depend on the concrete <see cref="SiteEventLogger"/> directly, and DI must resolve
 /// the recorder, query service, and purge service to a single shared instance.
@@ -17,17 +17,20 @@ public class ServiceWiringTests : IDisposable
     private readonly string _dbPath;
     private ServiceProvider? _provider;
 
+    /// <summary>Initializes the test class with a service provider backed by a temporary database.</summary>
     public ServiceWiringTests()
     {
         _dbPath = Path.Combine(Path.GetTempPath(), $"test_wiring_{Guid.NewGuid()}.db");
     }
 
+    /// <summary>Releases the resources held by this test class.</summary>
     public void Dispose()
     {
         _provider?.Dispose();
         TestLocalDb.DeleteFiles(_dbPath);
     }
 
+    /// <summary>Verifies that registering site event logging resolves all services and shares one recorder instance.</summary>
     [Fact]
     public void AddSiteEventLogging_ResolvesAllServices_SharingOneRecorderInstance()
     {
@@ -61,6 +64,7 @@ public class ServiceWiringTests : IDisposable
         Assert.Contains(hosted, h => h is EventLogPurgeService);
     }
 
+    /// <summary>Verifies that the purge and query services accept the concrete recorder without downcasting.</summary>
     [Fact]
     public void PurgeAndQueryServices_AcceptConcreteRecorder_WithoutDowncast()
     {