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.Transport.Tests/Import/BundleUnlockRateLimiterTests.cs

@@ -3,7 +3,7 @@ using ZB.MOM.WW.ScadaBridge.Transport.Import;
 namespace ZB.MOM.WW.ScadaBridge.Transport.Tests.Import;
 
 /// <summary>
-/// Transport-004: <see cref="BundleUnlockRateLimiter"/> must enforce a per-key cap
+/// <see cref="BundleUnlockRateLimiter"/> must enforce a per-key cap
 /// over a trailing window — the design doc's "per-IP-per-hour" cap (§11). The
 /// limiter accepts any opaque caller key (typically a remote IP); these tests use
 /// IP-style strings to mirror the documented intent.
@@ -13,11 +13,18 @@ public sealed class BundleUnlockRateLimiterTests
     private sealed class TestClock : TimeProvider
     {
         private DateTimeOffset _now;
+        /// <summary>Initializes a new instance of the <c>TestClock</c> class.</summary>
+        /// <param name="start">The start.</param>
         public TestClock(DateTimeOffset start) { _now = start; }
+        /// <inheritdoc />
         public override DateTimeOffset GetUtcNow() => _now;
+        /// <summary>Advances the test clock by the given amount.</summary>
+        /// <param name="delta">The delta.</param>
         public void Advance(TimeSpan delta) { _now += delta; }
     }
 
+    /// <summary>Verifies that registering an attempt under the limit returns true.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void TryRegisterAttempt_UnderLimit_ReturnsTrue()
     {
@@ -36,6 +43,8 @@ public sealed class BundleUnlockRateLimiterTests
         Assert.Equal(10, limiter.GetAttemptCount("10.0.0.1"));
     }
 
+    /// <summary>Verifies that registering an attempt once the limit is reached is rejected.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void TryRegisterAttempt_AtLimit_RejectsNextAttempt()
     {
@@ -60,6 +69,8 @@ public sealed class BundleUnlockRateLimiterTests
         Assert.Equal(10, limiter.GetAttemptCount("10.0.0.1"));
     }
 
+    /// <summary>Verifies that recorded attempts expire after the window elapses.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void TryRegisterAttempt_EntriesExpireAfterWindow()
     {
@@ -83,6 +94,8 @@ public sealed class BundleUnlockRateLimiterTests
         Assert.True(limiter.TryRegisterAttempt("10.0.0.1", maxAttemptsPerWindow: 10));
     }
 
+    /// <summary>Verifies that a partial expiry releases only the oldest slot.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void TryRegisterAttempt_PartialExpiry_ReleasesOldestSlotOnly()
     {
@@ -118,6 +131,8 @@ public sealed class BundleUnlockRateLimiterTests
         Assert.False(limiter.TryRegisterAttempt("10.0.0.1", maxAttemptsPerWindow: 10));
     }
 
+    /// <summary>Verifies that attempts are counted independently per key.</summary>
+    /// <returns>The result.</returns>
     [Fact]
     public void TryRegisterAttempt_PerKeyIsolation()
     {
@@ -137,6 +152,9 @@ public sealed class BundleUnlockRateLimiterTests
         Assert.Equal(10, limiter.GetAttemptCount("10.0.0.1"));
     }
 
+    /// <summary>Verifies that registering an attempt with a blank key throws.</summary>
+    /// <param name="key">The key.</param>
+    /// <returns>The result.</returns>
     [Theory]
     [InlineData(null)]
     [InlineData("")]
@@ -148,6 +166,9 @@ public sealed class BundleUnlockRateLimiterTests
             () => limiter.TryRegisterAttempt(key!, maxAttemptsPerWindow: 10));
     }
 
+    /// <summary>Verifies that registering an attempt with a non-positive limit throws.</summary>
+    /// <param name="limit">The limit.</param>
+    /// <returns>The result.</returns>
     [Theory]
     [InlineData(0)]
     [InlineData(-1)]