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/InboundApiOptionsValidatorTests.cs

@@ -16,6 +16,8 @@ public class InboundApiOptionsValidatorTests
     private static ValidateOptionsResult Validate(InboundApiOptions options) =>
         new InboundApiOptionsValidator().Validate(Options.DefaultName, options);
 
+    /// <summary>Verifies that the default options are valid.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void DefaultOptions_AreValid()
     {
@@ -23,6 +25,8 @@ public class InboundApiOptionsValidatorTests
         Assert.True(result.Succeeded, result.FailureMessage);
     }
 
+    /// <summary>Verifies that an empty API key pepper is valid.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void EmptyApiKeyPepper_IsValid()
     {
@@ -30,6 +34,8 @@ public class InboundApiOptionsValidatorTests
         Assert.True(result.Succeeded, result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero default method timeout is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void ZeroDefaultMethodTimeout_IsRejected()
     {
@@ -39,6 +45,8 @@ public class InboundApiOptionsValidatorTests
         Assert.Contains("DefaultMethodTimeout", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a negative default method timeout is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void NegativeDefaultMethodTimeout_IsRejected()
     {
@@ -48,6 +56,8 @@ public class InboundApiOptionsValidatorTests
         Assert.Contains("DefaultMethodTimeout", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero maximum request body size is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void ZeroMaxRequestBodyBytes_IsRejected()
     {
@@ -57,6 +67,8 @@ public class InboundApiOptionsValidatorTests
         Assert.Contains("MaxRequestBodyBytes", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a negative maximum request body size is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void NegativeMaxRequestBodyBytes_IsRejected()
     {
@@ -66,6 +78,8 @@ public class InboundApiOptionsValidatorTests
         Assert.Contains("MaxRequestBodyBytes", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero API method cache TTL is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void ZeroApiMethodCacheTtl_IsRejected()
     {
@@ -75,6 +89,8 @@ public class InboundApiOptionsValidatorTests
         Assert.Contains("ApiMethodCacheTtl", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a negative API method cache TTL is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void NegativeApiMethodCacheTtl_IsRejected()
     {
@@ -86,6 +102,8 @@ public class InboundApiOptionsValidatorTests
 
     // --- Standby forwarding (2026-08-28) ---
 
+    /// <summary>Verifies that absolute HTTP URLs are valid standby forward peer endpoints.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void StandbyForwardPeerEndpoints_AbsoluteHttpUrls_AreValid()
     {
@@ -96,6 +114,9 @@ public class InboundApiOptionsValidatorTests
         Assert.True(result.Succeeded, result.FailureMessage);
     }
 
+    /// <summary>Verifies that non-HTTP or relative standby forward peer endpoints are rejected.</summary>
+    /// <param name="peer">The peer.</param>
+    /// <returns>The result.</returns>
     [Theory]
     [InlineData("central-b:5000")]
     [InlineData("/api")]
@@ -109,6 +130,8 @@ public class InboundApiOptionsValidatorTests
         Assert.Contains("StandbyForwardPeerEndpoints", result.FailureMessage);
     }
 
+    /// <summary>Verifies that a zero standby forward timeout is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void ZeroStandbyForwardTimeout_IsRejected()
     {
@@ -120,6 +143,9 @@ public class InboundApiOptionsValidatorTests
 
     // --- Flow Debugger step logs (design 2026-09-09 D7) ---
 
+    /// <summary>Verifies that a non-positive maximum log line count per run is rejected.</summary>
+    /// <param name="max">The max.</param>
+    /// <returns>The result.</returns>
     [Theory]
     [InlineData(0)]
     [InlineData(-1)]