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.SiteRuntime.Tests/Deployment/HttpDeploymentConfigFetcherTests.cs

@@ -20,6 +20,8 @@ public class HttpDeploymentConfigFetcherTests
     // Happy path
     // -------------------------------------------------------------------------
 
+    /// <summary>Verifies that a 200 response returns the body.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_200_ReturnsBody()
     {
@@ -32,6 +34,8 @@ public class HttpDeploymentConfigFetcherTests
         Assert.Equal(expectedBody, result);
     }
 
+    /// <summary>Verifies that the request URL is built correctly.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_200_RequestUrlIsCorrect()
     {
@@ -46,6 +50,8 @@ public class HttpDeploymentConfigFetcherTests
             handler.LastRequest!.RequestUri!.ToString());
     }
 
+    /// <summary>Verifies that the deployment token header is set on the request.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_200_SetsDeploymentTokenHeader()
     {
@@ -59,6 +65,8 @@ public class HttpDeploymentConfigFetcherTests
         Assert.Equal("my-secret-token", handler.LastRequest.Headers.GetValues("X-Deployment-Token").Single());
     }
 
+    /// <summary>Verifies that a base URL with a trailing slash does not produce a double slash.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_BaseUrlWithTrailingSlash_NoDoubleSlashInUrl()
     {
@@ -73,6 +81,8 @@ public class HttpDeploymentConfigFetcherTests
         Assert.Equal("http://central/api/internal/deployments/dep-1/config", url);
     }
 
+    /// <summary>Verifies that a deployment id needing escaping is escaped exactly once in the URL.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_DeploymentIdNeedingEscaping_EscapesOnceInUrl()
     {
@@ -94,6 +104,8 @@ public class HttpDeploymentConfigFetcherTests
     // 404 → IsSuperseded = true
     // -------------------------------------------------------------------------
 
+    /// <summary>Verifies that a 404 response throws with the superseded flag set.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_404_ThrowsWithIsSupersededTrue()
     {
@@ -111,6 +123,8 @@ public class HttpDeploymentConfigFetcherTests
     // Other HTTP errors → IsSuperseded = false
     // -------------------------------------------------------------------------
 
+    /// <summary>Verifies that a 401 response throws with the superseded flag clear.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_401_ThrowsWithIsSupersededFalse()
     {
@@ -124,6 +138,8 @@ public class HttpDeploymentConfigFetcherTests
         Assert.Contains("401", ex.Message);
     }
 
+    /// <summary>Verifies that a 500 response throws with the superseded flag clear.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_500_ThrowsWithIsSupersededFalse()
     {
@@ -141,6 +157,8 @@ public class HttpDeploymentConfigFetcherTests
     // Transport failure → DeploymentConfigFetchException (not raw HttpRequestException)
     // -------------------------------------------------------------------------
 
+    /// <summary>Verifies that a transport exception is wrapped in a deployment config fetch exception.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_TransportException_WrapsAsDeploymentConfigFetchException()
     {
@@ -155,6 +173,8 @@ public class HttpDeploymentConfigFetcherTests
         Assert.Contains("Connection refused", ex.Message);
     }
 
+    /// <summary>Verifies that an HTTP client timeout is wrapped as a transport error rather than a cancellation.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_HttpClientTimeout_WrapsAsTransportError_NotCancellation()
     {
@@ -173,6 +193,8 @@ public class HttpDeploymentConfigFetcherTests
     // Cancellation propagates as-is
     // -------------------------------------------------------------------------
 
+    /// <summary>Verifies that a cancelled token propagates an operation-canceled exception.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task FetchAsync_CancelledToken_PropagatesOperationCanceledException()
     {
@@ -194,14 +216,19 @@ public class HttpDeploymentConfigFetcherTests
     {
         private readonly HttpStatusCode _status;
         private readonly string _body;
+        /// <summary>The last request the handler received.</summary>
         public HttpRequestMessage? LastRequest { get; private set; }
 
+        /// <summary>Creates a handler that always replies with the given status and body.</summary>
+        /// <param name="status">The HTTP status code to return.</param>
+        /// <param name="body">The response body to return.</param>
         public StubHandler(HttpStatusCode status, string body)
         {
             _status = status;
             _body = body;
         }
 
+        /// <inheritdoc />
         protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken ct)
         {
             LastRequest = request;
@@ -216,14 +243,18 @@ public class HttpDeploymentConfigFetcherTests
     private sealed class ThrowingHandler : HttpMessageHandler
     {
         private readonly Exception _ex;
+        /// <summary>Creates a handler that throws the given exception.</summary>
+        /// <param name="ex">The exception to throw.</param>
         public ThrowingHandler(Exception ex) => _ex = ex;
 
+        /// <inheritdoc />
         protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken ct)
             => throw _ex;
     }
 
     private sealed class DelayHandler : HttpMessageHandler
     {
+        /// <inheritdoc />
         protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken ct)
         {
             await Task.Delay(Timeout.Infinite, ct);