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/Commands/ExternalSystemTimeoutOptionTests.cs

@@ -4,7 +4,7 @@ using ZB.MOM.WW.ScadaBridge.CLI.Commands;
 namespace ZB.MOM.WW.ScadaBridge.CLI.Tests.Commands;
 
 /// <summary>
-/// PLAN-06 Task 11: <c>external-system create</c> and <c>external-system update</c>
+/// <c>external-system create</c> and <c>external-system update</c>
 /// must expose an optional <c>--timeout-seconds</c> (<see cref="int"/>?) flag that
 /// carries the per-system ESG HTTP timeout. Omitting it preserves the existing value
 /// (update) / uses the gateway default (create).
@@ -21,6 +21,7 @@ public class ExternalSystemTimeoutOptionTests
     private static Option? FindOption(Command command, string name)
         => command.Options.SingleOrDefault(o => o.Name == name);
 
+    /// <summary>Verifies that the create command exposes an optional timeout-seconds option.</summary>
     [Fact]
     public void Create_HasOptionalTimeoutSecondsOption()
     {
@@ -30,6 +31,7 @@ public class ExternalSystemTimeoutOptionTests
         Assert.False(option!.Required);
     }
 
+    /// <summary>Verifies that the update command exposes an optional timeout-seconds option.</summary>
     [Fact]
     public void Update_HasOptionalTimeoutSecondsOption()
     {
@@ -39,6 +41,7 @@ public class ExternalSystemTimeoutOptionTests
         Assert.False(option!.Required);
     }
 
+    /// <summary>Verifies that the create command parses a supplied timeout-seconds value.</summary>
     [Fact]
     public void Create_ParsesTimeoutSecondsValue()
     {
@@ -52,6 +55,7 @@ public class ExternalSystemTimeoutOptionTests
         Assert.Equal(15, parse.GetValue<int?>("--timeout-seconds"));
     }
 
+    /// <summary>Verifies that the update command parses a supplied timeout-seconds value.</summary>
     [Fact]
     public void Update_ParsesTimeoutSecondsValue()
     {
@@ -65,6 +69,7 @@ public class ExternalSystemTimeoutOptionTests
         Assert.Equal(20, parse.GetValue<int?>("--timeout-seconds"));
     }
 
+    /// <summary>Verifies that omitting timeout-seconds on create parses without error.</summary>
     [Fact]
     public void Create_OmittedTimeoutSeconds_ParsesWithoutError()
     {