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.CentralUI.PlaywrightTests/LoginTests.cs

@@ -8,11 +8,15 @@ public class LoginTests
 {
     private readonly PlaywrightFixture _fixture;
 
+    /// <summary>Initializes the tests with the shared Playwright fixture.</summary>
+    /// <param name="fixture">The shared Playwright fixture.</param>
     public LoginTests(PlaywrightFixture fixture)
     {
         _fixture = fixture;
     }
 
+    /// <summary>Verifies that an unauthenticated user is redirected to the login page.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task UnauthenticatedUser_RedirectsToLogin()
     {
@@ -30,6 +34,8 @@ public class LoginTests
         await Expect(page.Locator("button[type='submit']")).ToHaveTextAsync("Sign in");
     }
 
+    /// <summary>Verifies that valid credentials authenticate the user successfully.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ValidCredentials_AuthenticatesSuccessfully()
     {
@@ -39,6 +45,8 @@ public class LoginTests
         Assert.DoesNotContain("/login", page.Url);
     }
 
+    /// <summary>Verifies that invalid credentials show an error on the login page.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task InvalidCredentials_ShowsError()
     {
@@ -66,6 +74,8 @@ public class LoginTests
         Assert.Equal(200, status); // redirect followed to login page
     }
 
+    /// <summary>Verifies that the token endpoint returns a JWT for valid credentials.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task TokenEndpoint_ReturnsJwt()
     {
@@ -91,6 +101,8 @@ public class LoginTests
         Assert.Equal("multi-role", result.GetProperty("username").GetString());
     }
 
+    /// <summary>Verifies that the token endpoint returns HTTP 401 for invalid credentials.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task TokenEndpoint_InvalidCredentials_Returns401()
     {