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/Entities/EntityConventionTests.cs

@@ -12,6 +12,7 @@ public class EntityConventionTests
             .Where(t => t.IsClass && !t.IsAbstract && t.Namespace != null
                         && t.Namespace.Contains(".Entities."));
 
+    /// <summary>Verifies that no entity class carries Entity Framework attributes.</summary>
     [Fact]
     public void AllEntities_ShouldHaveNoEfAttributes()
     {
@@ -45,6 +46,7 @@ public class EntityConventionTests
         }
     }
 
+    /// <summary>Verifies that every timestamp property on an entity is a DateTimeOffset.</summary>
     [Fact]
     public void AllTimestampProperties_ShouldBeDateTimeOffset()
     {
@@ -68,6 +70,7 @@ public class EntityConventionTests
         }
     }
 
+    /// <summary>Verifies that collection navigation properties on entities are declared as ICollection.</summary>
     [Fact]
     public void NavigationProperties_ShouldBeICollection()
     {