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/DeploymentManagerCertReconcileTests.cs

@@ -49,6 +49,7 @@ akka {
     private readonly SharedScriptLibrary _sharedScriptLibrary;
     private readonly TestLocalDb _localDb;
 
+    /// <summary>Creates the temporary local database, storage service and script services the deployment manager needs.</summary>
     public DeploymentManagerCertReconcileTests() : base(ClusterConfig, "dm-cert-reconcile")
     {
         _localDb = TestLocalDb.CreateTemp("dm-cert-test");
@@ -61,6 +62,7 @@ akka {
             _compilationService, NullLogger<SharedScriptLibrary>.Instance);
     }
 
+    /// <inheritdoc />
     void IDisposable.Dispose()
     {
         // TestKit teardown first, so no in-flight actor can reach a disposed ILocalDb;
@@ -74,6 +76,8 @@ akka {
     /// <summary>Forwards every message it receives to a probe, preserving the original sender.</summary>
     private sealed class ForwardingActor : ReceiveActor
     {
+        /// <summary>Creates a forwarder that sends every message it receives to the given target.</summary>
+        /// <param name="target">The actor that receives the forwarded messages.</param>
         public ForwardingActor(IActorRef target) => ReceiveAny(msg => target.Forward(msg));
     }
 
@@ -82,6 +86,7 @@ akka {
             _storage, _compilationService, _sharedScriptLibrary,
             null, new SiteRuntimeOptions(), NullLogger<DeploymentManagerActor>.Instance)));
 
+    /// <summary>Verifies that when a site node joins, the local trusted certificates are pushed to the joined node.</summary>
     [Fact]
     public void SiteNodeJoined_PushesLocalTrustedCertsToJoinedNode()
     {