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.Tests/Shared/DurationInputTests.cs

@@ -10,6 +10,7 @@ public class DurationInputTests
 {
     // ── Split: TimeSpan -> (value, unit) ───────────────────────────────────
 
+    /// <summary>Verifies that splitting a null duration returns a blank value with the seconds unit.</summary>
     [Fact]
     public void Split_Null_ReturnsBlankWithSecondsUnit()
     {
@@ -19,6 +20,7 @@ public class DurationInputTests
         Assert.Equal("sec", unit);
     }
 
+    /// <summary>Verifies that splitting a zero duration returns a blank value.</summary>
     [Fact]
     public void Split_Zero_ReturnsBlank()
     {
@@ -27,6 +29,7 @@ public class DurationInputTests
         Assert.Null(value);
     }
 
+    /// <summary>Verifies that a whole number of minutes splits into the minute unit.</summary>
     [Fact]
     public void Split_WholeMinutes_UsesMinuteUnit()
     {
@@ -36,6 +39,7 @@ public class DurationInputTests
         Assert.Equal("min", unit);
     }
 
+    /// <summary>Verifies that a whole number of seconds splits into the second unit.</summary>
     [Fact]
     public void Split_WholeSeconds_UsesSecondUnit()
     {
@@ -45,6 +49,7 @@ public class DurationInputTests
         Assert.Equal("sec", unit);
     }
 
+    /// <summary>Verifies that a sub-second duration splits into the millisecond unit.</summary>
     [Fact]
     public void Split_SubSecond_UsesMillisecondUnit()
     {
@@ -56,32 +61,40 @@ public class DurationInputTests
 
     // ── Compose: (value, unit) -> TimeSpan? ────────────────────────────────
 
+    /// <summary>Verifies that composing a blank value returns null.</summary>
     [Fact]
     public void Compose_Blank_ReturnsNull() =>
         Assert.Null(DurationInput.Compose(null, "sec"));
 
+    /// <summary>Verifies that composing a zero value returns null.</summary>
     [Fact]
     public void Compose_Zero_ReturnsNull() =>
         Assert.Null(DurationInput.Compose("0", "sec"));
 
+    /// <summary>Verifies that composing a negative value returns null.</summary>
     [Fact]
     public void Compose_Negative_ReturnsNull() =>
         Assert.Null(DurationInput.Compose("-5", "sec"));
 
+    /// <summary>Verifies that composing a seconds value builds the matching duration.</summary>
     [Fact]
     public void Compose_SecondsValue_BuildsDuration() =>
         Assert.Equal(TimeSpan.FromSeconds(30), DurationInput.Compose("30", "sec"));
 
+    /// <summary>Verifies that composing a minutes value builds the matching duration.</summary>
     [Fact]
     public void Compose_MinutesValue_BuildsDuration() =>
         Assert.Equal(TimeSpan.FromMinutes(5), DurationInput.Compose("5", "min"));
 
+    /// <summary>Verifies that composing a milliseconds value builds the matching duration.</summary>
     [Fact]
     public void Compose_MillisecondsValue_BuildsDuration() =>
         Assert.Equal(TimeSpan.FromMilliseconds(250), DurationInput.Compose("250", "ms"));
 
     // ── Round-trip ─────────────────────────────────────────────────────────
 
+    /// <summary>Verifies that splitting and then composing a duration preserves it.</summary>
+    /// <param name="milliseconds">The duration in milliseconds.</param>
     [Theory]
     [InlineData(250)]
     [InlineData(30000)]