Refactor code structure and optimize performance across multiple modules

src/__Libraries/__Tests/StellaOps.Signals.Tests/SignalsApiTests.cs

@@ -6,6 +6,8 @@ using StellaOps.Signals.Models;
 using StellaOps.Signals.Tests.TestInfrastructure;
 using Xunit;
 
+
+using StellaOps.TestKit;
 namespace StellaOps.Signals.Tests;
 
 public class SignalsApiTests : IClassFixture<SignalsTestFactory>
@@ -17,7 +19,8 @@ public class SignalsApiTests : IClassFixture<SignalsTestFactory>
         this.factory = factory;
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public async Task Callgraph_Ingest_Response_Includes_Extended_Fields()
     {
         using var client = factory.CreateClient();