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.IntegrationTests/LocalDbSitePairHarness.cs

@@ -70,6 +70,8 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
     /// <summary>Node B — the passive node, which listens.</summary>
     protected ILocalDb B => _dbProviderB.GetRequiredService<ILocalDb>();
 
+    /// <summary>Prepares the test class before the tests run.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public async Task InitializeAsync()
     {
         _dbProviderA = BuildDatabaseProvider(_pathA, "node-a");
@@ -83,6 +85,8 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
         await StartInitiatorAsync();
     }
 
+    /// <summary>Releases the resources held by this test class asynchronously.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public async Task DisposeAsync()
     {
         await StopHostAsync(_initiatorHost);
@@ -179,6 +183,7 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
     }
 
     /// <summary>Starts node B, the passive listener.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     protected async Task StartPassiveAsync()
     {
         var config = ReplicationConfig(peerAddress: null);
@@ -208,6 +213,7 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
     }
 
     /// <summary>Starts node A, which dials the passive node.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     protected async Task StartInitiatorAsync()
     {
         var config = ReplicationConfig(PassiveAddress());
@@ -223,6 +229,7 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
     }
 
     /// <summary>Takes node B's listener down, leaving its database intact and writable.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     protected async Task StopPassiveAsync()
     {
         await StopHostAsync(_serverHost);
@@ -233,6 +240,7 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
     /// Brings node B back on a NEW loopback port and re-dials from A. The initiator's channel
     /// factory re-reads the peer address on each reconnect, so this is a genuine rejoin.
     /// </summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     protected async Task RestartPairAsync()
     {
         await StartPassiveAsync();
@@ -252,6 +260,9 @@ public abstract class LocalDbSitePairHarness : IAsyncLifetime
     }
 
     /// <summary>Polls <paramref name="condition"/> until true or the deadline passes.</summary>
+    /// <param name="condition">The asynchronous condition to poll.</param>
+    /// <param name="because">The failure message used if the condition never becomes true.</param>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     protected static async Task WaitUntilAsync(Func<Task<bool>> condition, string because)
     {
         var deadline = DateTime.UtcNow + ConvergeTimeout;