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.InboundAPI.Tests/InboundScriptLoggerTests.cs

@@ -7,7 +7,7 @@ namespace ZB.MOM.WW.ScadaBridge.InboundAPI.Tests;
 
 /// <summary>
 /// Flow Debugger step logs (design 2026-09-09 D7): the central <c>Log</c> global's per-message cap.
-/// Final review M2 — the site runtime's <c>ScriptLogger.Clip</c> already backed off a char when the
+/// The site runtime's <c>ScriptLogger.Clip</c> already backed off a char when the
 /// cap landed between the halves of a surrogate pair; this side did not, so an emoji straddling the
 /// boundary left a LONE surrogate on the row (which breaks JSON serialization further down the pipe).
 /// </summary>
@@ -21,6 +21,7 @@ public class InboundScriptLoggerTests
         return (logger, rows);
     }
 
+    /// <summary>Verifies that a surrogate pair straddling the cap: is dropped whole.</summary>
     [Fact]
     public void ASurrogatePairStraddlingTheCap_IsDroppedWhole()
     {
@@ -35,6 +36,7 @@ public class InboundScriptLoggerTests
         Assert.DoesNotContain(message, static c => char.IsSurrogate(c));
     }
 
+    /// <summary>Verifies that an overlong message with no surrogate at the boundary: keeps the full cap.</summary>
     [Fact]
     public void AnOverlongMessageWithNoSurrogateAtTheBoundary_KeepsTheFullCap()
     {
@@ -47,6 +49,7 @@ public class InboundScriptLoggerTests
         Assert.Equal(new string('x', InboundScriptLogger.MaxMessageChars) + "…", message);
     }
 
+    /// <summary>Verifies that a message exactly at the cap: passes through unclipped.</summary>
     [Fact]
     public void AMessageExactlyAtTheCap_PassesThroughUnclipped()
     {