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.SiteRuntime.Tests/TestSupport/ScopeSpyServiceProvider.cs

@@ -4,7 +4,7 @@ using ZB.MOM.WW.ScadaBridge.SiteEventLogging;
 namespace ZB.MOM.WW.ScadaBridge.SiteRuntime.Tests.TestSupport;
 
 /// <summary>
-/// WP3.1 parity pin 3: an <see cref="IServiceProvider"/> that counts
+/// An <see cref="IServiceProvider"/> that counts
 /// <see cref="IServiceScopeFactory.CreateScope"/> calls and each scope's
 /// <see cref="IDisposable.Dispose"/>, so a test can assert that one script run creates
 /// exactly one DI scope and disposes it exactly once — on the success, failure, AND timeout
@@ -24,7 +24,9 @@ public sealed class ScopeSpyServiceProvider(ISiteEventLogger? logger = null)
     /// <summary>Scope disposals observed so far (double-disposal is counted twice, deliberately).</summary>
     public int ScopesDisposed => Volatile.Read(ref _scopesDisposed);
 
-    /// <inheritdoc />
+    /// <summary>Resolves the site event logger and this scope factory; every other service resolves to <c>null</c>.</summary>
+    /// <param name="serviceType">The requested service type.</param>
+    /// <returns>The matching service, or <c>null</c> when unsupported.</returns>
     public object? GetService(Type serviceType)
     {
         if (serviceType == typeof(ISiteEventLogger)) return logger;
@@ -32,7 +34,8 @@ public sealed class ScopeSpyServiceProvider(ISiteEventLogger? logger = null)
         return null;
     }
 
-    /// <inheritdoc />
+    /// <summary>Creates a counted scope whose disposal is also counted.</summary>
+    /// <returns>A spy scope.</returns>
     public IServiceScope CreateScope()
     {
         Interlocked.Increment(ref _scopesCreated);
@@ -41,8 +44,10 @@ public sealed class ScopeSpyServiceProvider(ISiteEventLogger? logger = null)
 
     private sealed class SpyScope(ScopeSpyServiceProvider owner) : IServiceScope
     {
+        /// <summary>Gets the owning provider as the scope's service provider.</summary>
         public IServiceProvider ServiceProvider => owner;
 
+        /// <summary>Releases the resources held by this instance.</summary>
         public void Dispose() => Interlocked.Increment(ref owner._scopesDisposed);
     }
 }