This handles the tedious work of upgrading a .NET 10 codebase to .NET 11, including all the breaking changes that come with C# 15, runtime updates, and library changes. It walks through updating target frameworks, fixing build errors from new compiler rules (like span collection expression safe-context changes), addressing EF Core and ASP.NET Core breaking changes, and updating your CI/CD setup. The workflow is methodical with commits at logical boundaries, and it pulls from loaded reference docs covering everything through Preview 3. Use it when you're actually migrating an existing net10.0 project, not for greenfield work or cosmetic refactoring. The skill assumes you already have the .NET 11 SDK installed and starts from there.
npx skills add https://github.com/dotnet/skills --skill migrate-dotnet10-to-dotnet11