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.PlaywrightTests/Cluster/CliRunner.cs

@@ -62,6 +62,8 @@ public static partial class CliRunner
     /// stdout. The connection flags (<c>--url</c>, <c>--username</c>,
     /// <c>--password</c>, <c>--format json</c>) are prepended automatically.
     /// </summary>
+    /// <param name="args">The CLI arguments to pass after the connection flags.</param>
+    /// <returns>The raw standard output of the CLI invocation.</returns>
     /// <exception cref="TimeoutException">
     /// The invocation exceeded the 60-second timeout; the process tree is killed.
     /// </exception>
@@ -135,6 +137,8 @@ public static partial class CliRunner
     /// as a <see cref="JsonDocument"/>. The caller owns the returned document and
     /// must dispose it.
     /// </summary>
+    /// <param name="args">The CLI arguments to pass after the connection flags.</param>
+    /// <returns>The parsed JSON output of the CLI invocation.</returns>
     public static async Task<JsonDocument> RunJsonAsync(params string[] args) =>
         JsonDocument.Parse(await RunAsync(args));