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.DelmiaNotifier.Tests/NotifierTests.cs

@@ -7,8 +7,10 @@ public class NotifierTests
     private sealed class FakeSender(params AttemptOutcome[] outcomes) : IRecipeSender
     {
         private readonly Queue<AttemptOutcome> _outcomes = new(outcomes);
+        /// <summary>Gets the calls recorded by this fake.</summary>
         public int Calls { get; private set; }
 
+        /// <inheritdoc />
         public Task<AttemptOutcome> SendAsync(string baseUrl, RecipeDownload payload, CancellationToken ct)
         {
             Calls++;
@@ -20,6 +22,8 @@ public class NotifierTests
     private static readonly RecipeDownload Payload =
         new() { MachineCode = "Z", DownloadPath = "x", WorkOrderNumber = "W", PartNumber = "P" };
 
+    /// <summary>Verifies that a connection failure advances to the next URL.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task ConnectFailure_advances_to_next_url()
     {
@@ -31,6 +35,8 @@ public class NotifierTests
         Assert.Equal(2, sender.Calls);
     }
 
+    /// <summary>Verifies that a connected response with a false result is final and does not fail over.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Connected_result_false_is_final_no_failover()
     {
@@ -43,6 +49,8 @@ public class NotifierTests
         Assert.Equal(1, sender.Calls);
     }
 
+    /// <summary>Verifies that a connected response with a 5xx status is final and does not fail over.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Connected_5xx_is_final_no_failover()
     {
@@ -55,6 +63,8 @@ public class NotifierTests
         Assert.Equal(1, sender.Calls);
     }
 
+    /// <summary>Verifies that when every URL fails to connect the notifier reports unreachable with the last error.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task All_connect_failures_report_unreachable_with_last_error()
     {