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/SiteStreamPullSiteCallsTests.cs

@@ -12,7 +12,7 @@ namespace ZB.MOM.WW.ScadaBridge.Communication.Tests;
 
 /// <summary>
 /// Tests for <see cref="SiteStreamGrpcServer.PullSiteCalls"/> (Site Call Audit
-/// #22 reconciliation handler). Verifies the request →
+/// reconciliation handler). Verifies the request →
 /// <see cref="IOperationTrackingStore.ReadChangedSinceAsync"/> → response
 /// round-trip through the gRPC handler. The store is an NSubstitute stub so the
 /// tests never touch SQLite. Mirrors <see cref="SiteStreamPullAuditEventsTests"/>
@@ -48,6 +48,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
             UpdatedAtUtc: DateTime.SpecifyKind(new DateTime(2026, 5, 20, 10, 1, 0), DateTimeKind.Utc),
             TerminalAtUtc: null);
 
+    /// <summary>Verifies that pulling site calls with no tracking store wired returns an empty response.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_NoStoreWired_ReturnsEmptyResponse()
     {
@@ -67,6 +69,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.False(response.MoreAvailable);
     }
 
+    /// <summary>Verifies that five stored rows are returned as five DTOs.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_With5Rows_ReturnsAllFiveDtos()
     {
@@ -92,6 +96,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.True(expectedIds.SetEquals(response.Operationals.Select(d => d.TrackedOperationId).ToHashSet()));
     }
 
+    /// <summary>Verifies that the since timestamp is passed to the store verbatim.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_PassesSinceUtcThroughVerbatim()
     {
@@ -121,10 +127,12 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.Equal(since, capturedSince);
     }
 
+    /// <summary>Verifies that a non-empty after id is passed to the store as the cursor.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_AfterIdSet_PassesCursorThroughToStore()
     {
-        // Task 15: a non-empty after_id is forwarded verbatim to the store as the
+        // A non-empty after_id is forwarded verbatim to the store as the
         // composite-keyset cursor.
         var store = Substitute.For<IOperationTrackingStore>();
         string? capturedAfterId = "SENTINEL";
@@ -151,6 +159,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.Equal(cursor, capturedAfterId);
     }
 
+    /// <summary>Verifies that an unset after id is passed to the store as null.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_AfterIdUnset_PassesNullToStore()
     {
@@ -180,6 +190,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.Null(capturedAfterId);
     }
 
+    /// <summary>Verifies that an unset since timestamp is passed to the store as <see cref="DateTime.MinValue"/>.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_SinceUtcUnset_PassesDateTimeMinValue()
     {
@@ -212,6 +224,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.Equal(DateTime.MinValue, captured);
     }
 
+    /// <summary>Verifies that a batch size of three with more rows available returns three rows and flags that more are available.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_BatchSize3_Returns3Rows_MoreAvailableTrue()
     {
@@ -236,6 +250,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.True(response.MoreAvailable);
     }
 
+    /// <summary>Verifies that a non-positive batch size throws an invalid-argument error.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_NonPositiveBatchSize_ThrowsInvalidArgument()
     {
@@ -254,6 +270,8 @@ public class SiteStreamPullSiteCallsTests : TestKit
         Assert.Equal(StatusCode.InvalidArgument, ex.StatusCode);
     }
 
+    /// <summary>Verifies that a store read failure returns an empty response.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task PullSiteCalls_ReadThrows_ReturnsEmptyResponse()
     {