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/Deployment/DebugViewInstancePickerTests.cs

@@ -81,7 +81,10 @@ public class DebugViewInstancePickerTests : BunitContext
     private sealed class StubAuthStateProvider : AuthenticationStateProvider
     {
         private readonly AuthenticationState _state;
+        /// <summary>Initializes the provider with a fixed authentication state.</summary>
+        /// <param name="state">The state.</param>
         public StubAuthStateProvider(AuthenticationState state) => _state = state;
+        /// <inheritdoc />
         public override Task<AuthenticationState> GetAuthenticationStateAsync()
             => Task.FromResult(_state);
     }
@@ -101,6 +104,7 @@ public class DebugViewInstancePickerTests : BunitContext
             .First(r => r.TextContent.Trim() == text)
             .Click();
 
+    /// <summary>Verifies that the instance selector is the picker component rather than a flat select.</summary>
     [Fact]
     public void InstanceSelector_IsThePicker_NotAFlatSelect()
     {
@@ -111,6 +115,7 @@ public class DebugViewInstancePickerTests : BunitContext
         Assert.Empty(cut.FindAll("select[data-test='debug-instance-select']"));
     }
 
+    /// <summary>Verifies that opening the picker shows only the root area.</summary>
     [Fact]
     public void OpeningThePicker_ShowsOnlyTheRootArea()
     {
@@ -122,6 +127,7 @@ public class DebugViewInstancePickerTests : BunitContext
         Assert.False(rows[0].HasAttribute("data-instance-id"));
     }
 
+    /// <summary>Verifies that drilling down reveals only the enabled instance.</summary>
     [Fact]
     public void DrillingDown_RevealsTheEnabledInstanceOnly()
     {
@@ -139,6 +145,7 @@ public class DebugViewInstancePickerTests : BunitContext
             r => r.TextContent.Contains("Off01"));
     }
 
+    /// <summary>Verifies that picking an instance fills the field and enables the Connect button.</summary>
     [Fact]
     public void PickingAnInstance_FillsTheField_AndEnablesConnect()
     {
@@ -211,6 +218,7 @@ public class DebugViewInstancePickerTests : BunitContext
         JSInterop.VerifyInvoke("localStorage.removeItem");
     }
 
+    /// <summary>Verifies that the picker is disabled while the view is connected.</summary>
     [Fact]
     public void WhileConnected_ThePickerIsDisabled()
     {