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/ApiMethodCacheTests.cs

@@ -3,7 +3,7 @@ using ZB.MOM.WW.ScadaBridge.Commons.Entities.InboundApi;
 namespace ZB.MOM.WW.ScadaBridge.InboundAPI.Tests;
 
 /// <summary>
-/// WP2.6b (arch-review misc — Inbound API per-request SQL): <see cref="ApiMethodCache"/>
+/// <see cref="ApiMethodCache"/>
 /// hit/miss/expiry/invalidation behavior, independent of the endpoint and subscriber wiring
 /// (covered separately by <see cref="ScriptArtifactChangeSubscriberTests"/>).
 /// </summary>
@@ -11,6 +11,8 @@ public class ApiMethodCacheTests
 {
     private static ApiMethod Method(string name) => new(name, "return 1;") { Id = 1 };
 
+    /// <summary>Verifies that a second call within the TTL is served from the cache without refetching.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task GetOrFetchAsync_SecondCallWithinTtl_ServesFromCache_NoRefetch()
     {
@@ -29,6 +31,8 @@ public class ApiMethodCacheTests
         Assert.Same(first, second);
     }
 
+    /// <summary>Verifies that a call after the TTL expires refetches the method.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task GetOrFetchAsync_AfterTtlExpiry_Refetches()
     {
@@ -48,6 +52,8 @@ public class ApiMethodCacheTests
         Assert.Equal(2, fetchCount);
     }
 
+    /// <summary>Verifies that a negative result is cached until the TTL expires.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task GetOrFetchAsync_NegativeResult_IsCachedUntilTtlExpires()
     {
@@ -67,6 +73,8 @@ public class ApiMethodCacheTests
         Assert.Equal(1, fetchCount);
     }
 
+    /// <summary>Verifies that invalidating an entry makes the next call refetch it.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Invalidate_DropsEntry_NextCallRefetches()
     {
@@ -85,6 +93,7 @@ public class ApiMethodCacheTests
         Assert.Equal(2, fetchCount);
     }
 
+    /// <summary>Verifies that invalidating an unknown method name does not throw.</summary>
     [Fact]
     public void Invalidate_UnknownName_DoesNotThrow()
     {
@@ -92,6 +101,7 @@ public class ApiMethodCacheTests
         cache.Invalidate("never-cached");
     }
 
+    /// <summary>Verifies that a non-positive TTL makes the constructor throw.</summary>
     [Fact]
     public void Constructor_NonPositiveTtl_Throws()
     {
@@ -103,8 +113,13 @@ public class ApiMethodCacheTests
     private sealed class FakeTimeProvider : TimeProvider
     {
         private DateTimeOffset _now;
+        /// <summary>Initializes the provider at the given start time.</summary>
+        /// <param name="start">The initial UTC time.</param>
         public FakeTimeProvider(DateTimeOffset start) => _now = start;
+        /// <summary>Advances the current time.</summary>
+        /// <param name="by">The amount of time to advance.</param>
         public void Advance(TimeSpan by) => _now += by;
+        /// <inheritdoc />
         public override DateTimeOffset GetUtcNow() => _now;
     }
 }