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.SiteRuntime.Tests/Scripts/ScriptPoolSizingTests.cs

@@ -4,7 +4,7 @@ using ZB.MOM.WW.ScadaBridge.SiteRuntime.Scripts;
 namespace ZB.MOM.WW.ScadaBridge.SiteRuntime.Tests.Scripts;
 
 /// <summary>
-/// WP3.1 test group 5 — the blocking script pool is no longer a fixed 8 threads forever. It
+/// The blocking script pool is no longer a fixed 8 threads forever. It
 /// scales with the number of running instances between a configured floor and ceiling, and it
 /// is deliberately GROW-ONLY: undeploying instances leaves idle threads (which cost nothing
 /// measurable) rather than paying for drain/steal complexity.
@@ -17,8 +17,11 @@ public class ScriptPoolSizingTests
         ScriptExecutionMaxThreadCount = ceiling
     };
 
+    /// <summary>Verifies that the target thread count applies the floor, ratio and ceiling.</summary>
+    /// <param name="instances">The number of running instances.</param>
+    /// <param name="expected">The expected target thread count.</param>
     [Theory]
-    // At or below floor * 8 instances the result is exactly the pre-WP3.1 fixed size —
+    // At or below floor * 8 instances the result is exactly the original fixed size —
     // existing configurations are byte-for-byte unchanged in behaviour.
     [InlineData(0, 8)]
     [InlineData(1, 8)]
@@ -33,6 +36,7 @@ public class ScriptPoolSizingTests
     public void ComputeTargetThreads_AppliesFloorRatioAndCeiling(int instances, int expected)
         => Assert.Equal(expected, ScriptExecutionScheduler.ComputeTargetThreads(instances, Options()));
 
+    /// <summary>Verifies that an overridden floor and ceiling are honoured.</summary>
     [Fact]
     public void ComputeTargetThreads_HonoursAnOverriddenFloorAndCeiling()
     {
@@ -43,6 +47,7 @@ public class ScriptPoolSizingTests
         Assert.Equal(4, ScriptExecutionScheduler.ComputeTargetThreads(1000, options));
     }
 
+    /// <summary>Verifies that the target thread count is never less than one, even with a degenerate floor.</summary>
     [Fact]
     public void ComputeTargetThreads_NeverReturnsLessThanOne_EvenWithADegenerateFloor()
     {
@@ -53,6 +58,7 @@ public class ScriptPoolSizingTests
         Assert.Equal(1, ScriptExecutionScheduler.ComputeTargetThreads(500, options));
     }
 
+    /// <summary>Verifies that EnsureCapacity grows once, is idempotent and never shrinks.</summary>
     [Fact]
     public void EnsureCapacity_GrowsOnce_IsIdempotent_AndNeverShrinks()
     {
@@ -71,6 +77,8 @@ public class ScriptPoolSizingTests
         Assert.Equal(5, scheduler.MaximumConcurrencyLevel);
     }
 
+    /// <summary>Verifies that EnsureCapacity widens the gauges so the whole pool is observable.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task EnsureCapacity_WidensTheGauges_SoTheWholePoolIsObservable()
     {