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.ConfigurationDatabase.Tests/SharedSchemaRepositoryTests.cs

@@ -7,8 +7,8 @@ using Xunit;
 namespace ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests;
 
 /// <summary>
-/// Round-trip tests for <see cref="SharedSchemaRepository"/> (M9 template-level JSON-Schema
-/// library, Task T32a). Uses the in-memory SQLite harness (<see cref="SqliteTestHelper"/>)
+/// Round-trip tests for <see cref="SharedSchemaRepository"/> (template-level JSON-Schema
+/// library). Uses the in-memory SQLite harness (<see cref="SqliteTestHelper"/>)
 /// — the schema is materialized via <c>EnsureCreated()</c> from the same model the
 /// migration was generated from, so the tests run unconditionally (no live MSSQL needed)
 /// while still exercising the real unique-<c>Name</c> index. Mirrors the
@@ -19,18 +19,22 @@ public class SharedSchemaRepositoryTests : IDisposable
     private readonly ScadaBridgeDbContext _context;
     private readonly SharedSchemaRepository _repository;
 
+    /// <summary>Initializes a new instance of <c>SharedSchemaRepositoryTests</c>.</summary>
     public SharedSchemaRepositoryTests()
     {
         _context = SqliteTestHelper.CreateInMemoryContext();
         _repository = new SharedSchemaRepository(_context);
     }
 
+    /// <summary>Releases the resources held by this test class.</summary>
     public void Dispose()
     {
         _context.Database.CloseConnection();
         _context.Dispose();
     }
 
+    /// <summary>Verifies that add then get by name round trips.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Add_ThenGetByName_RoundTrips()
     {
@@ -58,6 +62,8 @@ public class SharedSchemaRepositoryTests : IDisposable
         Assert.Equal("TankReading", byId!.Name);
     }
 
+    /// <summary>Verifies that get by name unknown returns null.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task GetByName_Unknown_ReturnsNull()
     {
@@ -65,6 +71,8 @@ public class SharedSchemaRepositoryTests : IDisposable
         Assert.Null(missing);
     }
 
+    /// <summary>Verifies that add duplicate name throws.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Add_DuplicateName_Throws()
     {
@@ -75,6 +83,8 @@ public class SharedSchemaRepositoryTests : IDisposable
             _repository.AddAsync(new SharedSchema { Name = "Dup", SchemaJson = "{}" }));
     }
 
+    /// <summary>Verifies that nullable scope round trips.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task NullableScope_RoundTrips()
     {
@@ -85,6 +95,8 @@ public class SharedSchemaRepositoryTests : IDisposable
         Assert.Null(loaded!.Scope);
     }
 
+    /// <summary>Verifies that list returns all ordered by name.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task List_ReturnsAll_OrderedByName()
     {
@@ -97,6 +109,8 @@ public class SharedSchemaRepositoryTests : IDisposable
         Assert.Equal("Bravo", all[1].Name);
     }
 
+    /// <summary>Verifies that update persists changes.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Update_PersistsChanges()
     {
@@ -114,6 +128,8 @@ public class SharedSchemaRepositoryTests : IDisposable
         Assert.Equal("Updated", reloaded.Scope);
     }
 
+    /// <summary>Verifies that delete removes row.</summary>
+    /// <returns>A task that represents the asynchronous operation.</returns>
     [Fact]
     public async Task Delete_RemovesRow()
     {