xunit-test-frameworklisted

# xUnit Test Framework ## Purpose Provide xUnit test execution and generation for C#/.NET projects. ## Usage ```bash dotnet run --project generate-test.csproj -- --source=Calculator.cs --output=CalculatorTests.cs --description="Division by zero" dotnet test --filter=CalculatorTests ``` ## Output Format JSON with success, passed, failed, total, and failures array.