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/Shared/AccessibilityTests.cs

@@ -42,10 +42,11 @@ public class AccessibilityTests : BunitContext
 
     // ── Test 1: TreeView chevron toggle a11y attributes ────────────────────────
 
+    /// <summary>Verifies that the tree view toggle exposes an accessible name and role.</summary>
     [Fact]
     public void TreeViewToggle_HasAccessibleNameAndRole()
     {
-        // BranchRoots has one branch node ("root-1") and one leaf node ("leaf-1").
+        // BranchRoots has one branch node (the first root) and one leaf node (the first leaf).
         // The branch node's toggle span is the only .tv-toggle rendered.
         var cut = RenderTreeView();
 
@@ -57,7 +58,7 @@ public class AccessibilityTests : BunitContext
         // tabindex="0" puts it in the natural tab order.
         Assert.Equal("0", toggle.GetAttribute("tabindex"));
 
-        // aria-label must be non-empty (e.g. "Expand root-1").
+        // aria-label must be non-empty (e.g. "Expand" followed by the node name).
         var label = toggle.GetAttribute("aria-label");
         Assert.NotNull(label);
         Assert.NotEmpty(label!);
@@ -66,6 +67,7 @@ public class AccessibilityTests : BunitContext
         Assert.Equal("false", toggle.GetAttribute("aria-expanded"));
     }
 
+    /// <summary>Verifies that the tree view toggle's aria-expanded attribute reflects the expanded state.</summary>
     [Fact]
     public void TreeViewToggle_AriaExpanded_ReflectsExpandedState()
     {
@@ -90,6 +92,7 @@ public class AccessibilityTests : BunitContext
 
     // ── Test 3: TreeView keyboard activation (Enter / Space) ──────────────────
 
+    /// <summary>Verifies that pressing Enter on the tree view toggle toggles the expanded state.</summary>
     [Fact]
     public void TreeViewToggle_EnterKey_TogglesExpanded()
     {
@@ -105,6 +108,7 @@ public class AccessibilityTests : BunitContext
         Assert.Equal("true", expandedToggle.GetAttribute("aria-expanded"));
     }
 
+    /// <summary>Verifies that pressing Space on the tree view toggle toggles the expanded state.</summary>
     [Fact]
     public void TreeViewToggle_SpaceKey_TogglesExpanded()
     {
@@ -122,6 +126,7 @@ public class AccessibilityTests : BunitContext
 
     // ── Test 2: ToastNotification live-region regression lock ─────────────────
 
+    /// <summary>Verifies that the toast notification container is an aria-live polite region.</summary>
     [Fact]
     public void ToastNotification_Container_IsAriaLivePolite()
     {