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/Cluster/SelfFirstSeedBootstrapTests.cs

@@ -68,6 +68,8 @@ public sealed class SelfFirstSeedBootstrapTests : IAsyncLifetime
         return system;
     }
 
+    /// <summary>Verifies that a lone node cold-starting with a dead peer forms a cluster on its own.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Lone_cold_start_forms_a_cluster_when_the_peer_is_dead()
     {
@@ -81,6 +83,8 @@ public sealed class SelfFirstSeedBootstrapTests : IAsyncLifetime
         Assert.Equal(MemberStatus.Up, Akka.Cluster.Cluster.Get(node).SelfMember.Status);
     }
 
+    /// <summary>Verifies that listing the peer first in the seed nodes is the outage gap, so the lone node never forms a cluster.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Peer_first_ordering_is_the_outage_gap_and_never_forms()
     {
@@ -100,6 +104,8 @@ public sealed class SelfFirstSeedBootstrapTests : IAsyncLifetime
         await TwoNodeClusterFixture.WaitForMembersUp(node, 1, TimeSpan.FromSeconds(30));
     }
 
+    /// <summary>Verifies that a restarting node rejoins its live peer instead of forming its own cluster.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Restarting_node_rejoins_its_live_peer_instead_of_self_forming()
     {
@@ -123,6 +129,8 @@ public sealed class SelfFirstSeedBootstrapTests : IAsyncLifetime
         await TwoNodeClusterFixture.WaitForMembersUp(nodeA, 2, TimeSpan.FromSeconds(90));
     }
 
+    /// <summary>Verifies that two nodes cold-starting together converge on a single cluster.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Both_nodes_cold_starting_together_converge_on_one_cluster()
     {
@@ -140,8 +148,12 @@ public sealed class SelfFirstSeedBootstrapTests : IAsyncLifetime
         await TwoNodeClusterFixture.WaitForMembersUp(nodeB, 2, TimeSpan.FromSeconds(60));
     }
 
+    /// <summary>Prepares the fixture before the tests run.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public Task InitializeAsync() => Task.CompletedTask;
 
+    /// <summary>Releases the resources held by this fixture asynchronously.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     public async Task DisposeAsync()
     {
         foreach (var s in _systems)