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.CentralUI.Tests/Services/ConnectionHealthQueryServiceTests.cs

@@ -10,7 +10,7 @@ using ZB.MOM.WW.ScadaBridge.HealthMonitoring;
 namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Services;
 
 /// <summary>
-/// M9-T25: unit tests for <see cref="ConnectionHealthQueryService"/>, which projects
+/// Unit tests for <see cref="ConnectionHealthQueryService"/>, which projects
 /// the site health reports' name-keyed <see cref="SiteHealthReport.DataConnectionStatuses"/>
 /// onto a connection-id → <see cref="ConnectionHealth"/> map for the design
 /// DataConnections page. The site repository + health aggregator are substituted so
@@ -62,6 +62,8 @@ public sealed class ConnectionHealthQueryServiceTests
             EnabledInstanceCount: 0,
             DisabledInstanceCount: 0);
 
+    /// <summary>Verifies that connection names in a health report are mapped to connection ids.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Maps_ConnectionNameStatuses_ToConnectionIds()
     {
@@ -81,6 +83,8 @@ public sealed class ConnectionHealthQueryServiceTests
         Assert.Equal(2, map.Count);
     }
 
+    /// <summary>Verifies that a site without a health report yields no entries.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task MissingReport_YieldsNoEntriesForThatSite()
     {
@@ -95,6 +99,8 @@ public sealed class ConnectionHealthQueryServiceTests
         Assert.Empty(map);
     }
 
+    /// <summary>Verifies that a site state without a latest report yields no entries.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task StateWithoutLatestReport_YieldsNoEntries()
     {
@@ -110,6 +116,8 @@ public sealed class ConnectionHealthQueryServiceTests
         Assert.Empty(map);
     }
 
+    /// <summary>Verifies that a connection name that cannot be resolved is skipped.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task UnknownConnectionName_IsSkipped()
     {
@@ -129,10 +137,12 @@ public sealed class ConnectionHealthQueryServiceTests
         Assert.Single(map);
     }
 
+    /// <summary>Verifies that connection names are resolved per site rather than globally.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ResolvesNamesPerSite_NotGloballyAmbiguous()
     {
-        // Two sites each own a connection named "PLC-1". The name→id resolution
+        // Two sites each own a connection with the same name. The name→id resolution
         // must be scoped to the report's own site so the right id is stamped.
         var siteA = new Site("Plant-A", "plant-a") { Id = 1 };
         var siteB = new Site("Plant-B", "plant-b") { Id = 2 };