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/Actors/ScriptActorTraceTests.cs

@@ -27,12 +27,18 @@ public class ScriptActorTraceTests : TestKit, IDisposable
 {
     private sealed class CapturingAuditWriter : IAuditWriter
     {
+        /// <summary>The audit events captured so far.</summary>
         public List<AuditEvent> Events { get; } = new();
+        /// <inheritdoc />
         public Task WriteAsync(AuditEvent evt, CancellationToken ct = default)
         {
             lock (Events) Events.Add(evt);
             return Task.CompletedTask;
         }
+        /// <summary>Polls the captured events until one with the given action appears or the timeout elapses.</summary>
+        /// <param name="action">The audit action to wait for.</param>
+        /// <param name="timeout">The maximum time to wait.</param>
+        /// <returns>The first matching event, or <see langword="null"/> if none arrived in time.</returns>
         public AuditEvent? WaitForKind(string action, TimeSpan timeout)
         {
             var deadline = DateTime.UtcNow + timeout;
@@ -55,6 +61,7 @@ public class ScriptActorTraceTests : TestKit, IDisposable
     private readonly CapturingAuditWriter _writer = new();
     private readonly IServiceProvider _services;
 
+    /// <summary>Creates the shared script library, options, scheduler and service provider used by every test.</summary>
     public ScriptActorTraceTests()
     {
         _sharedLibrary = new SharedScriptLibrary(
@@ -67,6 +74,7 @@ public class ScriptActorTraceTests : TestKit, IDisposable
         _services = sc.BuildServiceProvider();
     }
 
+    /// <inheritdoc />
     void IDisposable.Dispose()
     {
         Shutdown();
@@ -91,6 +99,7 @@ public class ScriptActorTraceTests : TestKit, IDisposable
             NullLogger<ScriptActor>.Instance, null, null, null, _services, _scheduler)));
     }
 
+    /// <summary>Verifies that a traced call replies with the execution ID and a ScriptRun trace event.</summary>
     [Fact]
     public void Call_WithTrace_ReplyCarriesExecutionId_AndAScriptRunEvent()
     {
@@ -117,6 +126,7 @@ public class ScriptActorTraceTests : TestKit, IDisposable
         Assert.NotNull(_writer.WaitForKind("ScriptTrace.ScriptRun", TimeSpan.FromSeconds(5)));
     }
 
+    /// <summary>Verifies that a traced call whose script fails returns a failed ScriptRun trace event.</summary>
     [Fact]
     public void Call_WithTrace_FailedRun_ReturnsFailedScriptRunEvent()
     {
@@ -132,6 +142,7 @@ public class ScriptActorTraceTests : TestKit, IDisposable
         Assert.Contains("kaboom", row.ErrorMessage);
     }
 
+    /// <summary>Verifies that an untraced call replies with no trace events but still carries the execution ID.</summary>
     [Fact]
     public void Call_WithoutTrace_ReplyHasNoTraceEvents_ButStillCarriesExecutionId()
     {
@@ -147,6 +158,9 @@ public class ScriptActorTraceTests : TestKit, IDisposable
         Assert.Empty(_writer.Events);
     }
 
+    /// <summary>Verifies that a traced value change makes the triggered run a child of the source execution ID.</summary>
+    /// <param name="inferred">Whether the change is an inferred device update rather than a direct write.</param>
+    /// <param name="triggerSource">The trigger source label stamped on the change.</param>
     [Theory]
     [InlineData(false, "value-change")]
     [InlineData(true, "inferred-device-update")]
@@ -170,6 +184,7 @@ public class ScriptActorTraceTests : TestKit, IDisposable
         Assert.Equal(triggerSource, extra.TriggerSource);
     }
 
+    /// <summary>Verifies that an untraced value change leaves the triggered run as a root and emits no trace events.</summary>
     [Fact]
     public void ValueChangeTrigger_UntracedChange_RunStaysRoot_AndEmitsNothing()
     {