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.Commons.Tests/Debugging/FlowEnumContractTests.cs

@@ -4,6 +4,7 @@ namespace ZB.MOM.WW.ScadaBridge.Commons.Tests.Debugging;
 
 public class FlowEnumContractTests
 {
+    /// <summary>Verifies that the enum names and numeric values remain stable.</summary>
     [Fact]
     public void EnumNamesAndValues_RemainStable()
     {
@@ -15,6 +16,7 @@ public class FlowEnumContractTests
         Assert.Equal(Enumerable.Range(0, 7), Enum.GetValues<FlowStepOutcome>().Select(x => (int)x));
     }
 
+    /// <summary>Verifies that the kind rank follows the display order independent of the enum's numeric value.</summary>
     [Fact]
     public void KindRank_UsesDisplayOrderIndependentOfEnumValue()
     {