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.NotificationService.Tests/EmailTransportParserTests.cs

@@ -5,6 +5,9 @@ namespace ZB.MOM.WW.ScadaBridge.NotificationService.Tests;
 /// </summary>
 public class EmailTransportParserTests
 {
+    /// <summary>Verifies that parsing a known transport name returns the expected transport.</summary>
+    /// <param name="input">The input text to parse.</param>
+    /// <param name="expected">The expected parsed transport.</param>
     [Theory]
     [InlineData("Smtp", EmailTransport.Smtp)]
     [InlineData("smtp", EmailTransport.Smtp)]
@@ -18,6 +21,8 @@ public class EmailTransportParserTests
         Assert.Equal(expected, EmailTransportParser.Parse(input));
     }
 
+    /// <summary>Verifies that parsing a null or empty value defaults to SMTP.</summary>
+    /// <param name="input">The input text to parse.</param>
     [Theory]
     [InlineData(null)]
     [InlineData("")]
@@ -28,6 +33,8 @@ public class EmailTransportParserTests
         Assert.Equal(EmailTransport.Smtp, EmailTransportParser.Parse(input));
     }
 
+    /// <summary>Verifies that parsing an unknown transport name throws.</summary>
+    /// <param name="input">The input text to parse.</param>
     [Theory]
     [InlineData("Graph")]
     [InlineData("smtps")]