Refactor code structure and optimize performance across multiple modules

src/PacksRegistry/StellaOps.PacksRegistry/StellaOps.PacksRegistry.Tests/FilePackRepositoryTests.cs

@@ -1,11 +1,13 @@
 using StellaOps.PacksRegistry.Core.Models;
 using StellaOps.PacksRegistry.Infrastructure.FileSystem;
 
+using StellaOps.TestKit;
 namespace StellaOps.PacksRegistry.Tests;
 
 public sealed class FilePackRepositoryTests
 {
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public async Task Upsert_and_List_round_trip()
     {
         var tempPath = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("N"));