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.ConfigurationDatabase.Tests/DeployedRevisionHashesRepositoryTests.cs

@@ -62,6 +62,8 @@ public class DeployedRevisionHashesRepositoryTests : IDisposable
         await _context.SaveChangesAsync();
     }
 
+    /// <summary>Verifies that the repository returns every deployed snapshot keyed by instance.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task GetDeployedRevisionHashes_returns_every_snapshot_keyed_by_instance()
     {
@@ -77,6 +79,8 @@ public class DeployedRevisionHashesRepositoryTests : IDisposable
         Assert.Equal("hash-two", hashes[second]);
     }
 
+    /// <summary>Verifies that the repository returns an empty result when nothing is deployed.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task GetDeployedRevisionHashes_returns_empty_when_nothing_is_deployed()
     {