Refactor code structure and optimize performance across multiple modules

src/__Libraries/StellaOps.Cryptography.Tests/SimRemoteProviderTests.cs

@@ -10,11 +10,14 @@ using StellaOps.Cryptography.Plugin.SimRemote;
 using StellaOps.Cryptography.DependencyInjection;
 using Xunit;
 
+
+using StellaOps.TestKit;
 namespace StellaOps.Cryptography.Tests;
 
 public class SimRemoteProviderTests
 {
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void Supports_DefaultAlgorithms_CoversStandardIds()
     {
         var handler = new NoopHandler();
@@ -27,7 +30,8 @@ public class SimRemoteProviderTests
         Assert.True(provider.Supports(CryptoCapability.Signing, SignatureAlgorithms.Dilithium3));
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public async Task SignAndVerify_WithSimProvider_Succeeds()
     {
         // Arrange