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.Communication.Tests/Grpc/ProtoRoundtripTests.cs

@@ -6,6 +6,8 @@ namespace ZB.MOM.WW.ScadaBridge.Communication.Tests.Grpc;
 
 public class ProtoRoundtripTests
 {
+    /// <summary>Verifies that an attribute value update survives a protobuf round trip.</summary>
+    /// <param name="quality">The test input.</param>
     [Theory]
     [InlineData(Quality.Good)]
     [InlineData(Quality.Uncertain)]
@@ -39,6 +41,8 @@ public class ProtoRoundtripTests
         Assert.Equal(timestamp.Nanos, deserialized.Timestamp.Nanos);
     }
 
+    /// <summary>Verifies that an alarm state update survives a protobuf round trip.</summary>
+    /// <param name="state">The test input.</param>
     [Theory]
     [InlineData(AlarmStateEnum.AlarmStateNormal)]
     [InlineData(AlarmStateEnum.AlarmStateActive)]
@@ -67,6 +71,7 @@ public class ProtoRoundtripTests
         Assert.Equal(original.Timestamp, deserialized.Timestamp);
     }
 
+    /// <summary>Verifies that a site stream event carrying an attribute change sets the matching oneof case.</summary>
     [Fact]
     public void SiteStreamEvent_OneOf_AttributeChanged()
     {
@@ -97,6 +102,7 @@ public class ProtoRoundtripTests
         Assert.Equal("42.5", deserialized.AttributeChanged.Value);
     }
 
+    /// <summary>Verifies that a site stream event carrying an alarm change sets the matching oneof case.</summary>
     [Fact]
     public void SiteStreamEvent_OneOf_AlarmChanged()
     {
@@ -127,6 +133,7 @@ public class ProtoRoundtripTests
         Assert.Equal(1, deserialized.AlarmChanged.Priority);
     }
 
+    /// <summary>Verifies that a DateTimeOffset timestamp survives a full protobuf round trip.</summary>
     [Fact]
     public void Timestamp_DateTimeOffset_FullRoundTrip()
     {