Refactor code structure and optimize performance across multiple modules

src/__Libraries/__Tests/StellaOps.Canonicalization.Tests/CanonicalJsonSerializerTests.cs

@@ -3,11 +3,13 @@ using StellaOps.Canonicalization.Json;
 using StellaOps.Canonicalization.Ordering;
 using Xunit;
 
+using StellaOps.TestKit;
 namespace StellaOps.Canonicalization.Tests;
 
 public class CanonicalJsonSerializerTests
 {
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void Serialize_Dictionary_OrdersKeysAlphabetically()
     {
         var dict = new Dictionary<string, int> { ["z"] = 1, ["a"] = 2, ["m"] = 3 };
@@ -15,7 +17,8 @@ public class CanonicalJsonSerializerTests
         json.Should().Be("{\"a\":2,\"m\":3,\"z\":1}");
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void Serialize_DateTimeOffset_UsesUtcIso8601()
     {
         var dt = new DateTimeOffset(2024, 1, 15, 10, 30, 0, TimeSpan.FromHours(5));
@@ -24,7 +27,8 @@ public class CanonicalJsonSerializerTests
         json.Should().Contain("2024-01-15T05:30:00.000Z");
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void Serialize_NullValues_AreOmitted()
     {
         var obj = new { Name = "test", Value = (string?)null };
@@ -32,7 +36,8 @@ public class CanonicalJsonSerializerTests
         json.Should().NotContain("value");
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void SerializeWithDigest_ProducesConsistentDigest()
     {
         var obj = new { Name = "test", Value = 123 };
@@ -44,7 +49,8 @@ public class CanonicalJsonSerializerTests
 
 public class PackageOrdererTests
 {
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void StableOrder_OrdersByPurlFirst()
     {
         var packages = new[]

src/__Libraries/__Tests/StellaOps.Canonicalization.Tests/StellaOps.Canonicalization.Tests.csproj

@@ -17,5 +17,6 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\StellaOps.Canonicalization\StellaOps.Canonicalization.csproj" />
+    <ProjectReference Include="../../StellaOps.TestKit/StellaOps.TestKit.csproj" />
   </ItemGroup>
 </Project>