Refactor code structure and optimize performance across multiple modules

src/Signals/__Tests/StellaOps.Signals.Tests/InMemoryEventsPublisherTests.cs

@@ -7,11 +7,13 @@ using StellaOps.Signals.Options;
 using StellaOps.Signals.Services;
 using Xunit;
 
+using StellaOps.TestKit;
 namespace StellaOps.Signals.Tests;
 
 public class InMemoryEventsPublisherTests
 {
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public async Task PublishFactUpdatedAsync_EmitsStructuredEvent()
     {
         var logger = new TestLogger<InMemoryEventsPublisher>();