v1.0.0-beta.13

What's Changed

• Remove TimeWarp.Nuru dependency - it was imported but not actually used
• Modernize string slicing to use C# range operator
• Fix release workflow to properly strip 'v' prefix from version tags

Full Changelog: v1.0.0-beta.12...v1.0.0-beta.13

1.0.0-beta.12

Remove unnecessary EnablePreviewFeatures setting and main branch references