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.Host.Tests/HostStartupTests.cs

@@ -14,6 +14,7 @@ public class HostStartupTests : IDisposable
 {
     private readonly List<IDisposable> _disposables = new();
 
+    /// <summary>Releases the resources held by this test class.</summary>
     public void Dispose()
     {
         foreach (var d in _disposables)
@@ -22,6 +23,7 @@ public class HostStartupTests : IDisposable
         }
     }
 
+    /// <summary>Verifies that the Central role starts without error.</summary>
     [Fact]
     public void CentralRole_StartsWithoutError()
     {
@@ -29,7 +31,7 @@ public class HostStartupTests : IDisposable
         // Set the environment to Central so appsettings.Central.json is loaded,
         // and set DOTNET_ENVIRONMENT before the factory creates the host.
         var previousEnv = Environment.GetEnvironmentVariable("DOTNET_ENVIRONMENT");
-        // Host-003: connection strings are externalised; supply them via env vars.
+        // Connection strings are externalised; supply them via env vars.
         using var dbEnv = new CentralDbTestEnvironment();
         try
         {
@@ -68,6 +70,7 @@ public class HostStartupTests : IDisposable
         }
     }
 
+    /// <summary>Verifies that the Site role starts without error.</summary>
     [Fact]
     public void SiteRole_StartsWithoutError()
     {
@@ -98,6 +101,7 @@ public class HostStartupTests : IDisposable
         Assert.NotNull(app.Services);
     }
 
+    /// <summary>Verifies that the Site role configures Kestrel for gRPC.</summary>
     [Fact]
     public void SiteRole_ConfiguresKestrelForGrpc()
     {
@@ -143,6 +147,7 @@ public class HostStartupTests : IDisposable
         (app as IDisposable)?.Dispose();
     }
 
+    /// <summary>Verifies that the Host project does not use conditional compilation.</summary>
     [Fact]
     public void HostProject_DoesNotUseConditionalCompilation()
     {
@@ -165,6 +170,7 @@ public class HostStartupTests : IDisposable
         }
     }
 
+    /// <summary>Verifies that the program registers an unhandled-exception exit handler.</summary>
     [Fact]
     public void Program_RegistersUnhandledExceptionExitHandler()
     {