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.CLI.Tests/ImportNativeAlarmSourceOverridesTests.cs

@@ -13,6 +13,7 @@ public class ImportNativeAlarmSourceOverridesTests
 {
     // ── error path ───────────────────────────────────────────────────────────
 
+    /// <summary>Verifies that CSV input without a header row produces errors and no rows.</summary>
     [Fact]
     public void CsvWithMissingHeader_ProducesErrors()
     {
@@ -22,6 +23,7 @@ public class ImportNativeAlarmSourceOverridesTests
         Assert.Empty(result.Rows);
     }
 
+    /// <summary>Verifies that a CSV row with a blank source name produces an error and no rows.</summary>
     [Fact]
     public void CsvWithBlankSourceName_ProducesError()
     {
@@ -34,6 +36,7 @@ public class ImportNativeAlarmSourceOverridesTests
 
     // ── happy path ───────────────────────────────────────────────────────────
 
+    /// <summary>Verifies that valid CSV input produces the expected list of override entries.</summary>
     [Fact]
     public void ValidCsv_ProducesCorrectEntryList()
     {