Use when building .NET 8/9 applications, ASP.NET Core APIs, Entity Framework Core, MediatR CQRS, modular monolith architecture, FluentValidation, Result pattern, JWT authentication, or any C# backend development question.
Initial release of dotnet-expert skill. - Provides guidance for building .NET 8/9 applications using ASP.NET Core APIs, Entity Framework Core, MediatR CQRS, modular monolith architecture, FluentValidation, JWT authentication, and strongly-typed C# code practices. - Emphasizes clean architecture, modular monolith project structure, CQRS with MediatR, the Result pattern over exceptions, and async-first development. - Includes code patterns for minimal APIs, CQRS request handlers, and robust input validation using FluentValidation. - Demonstrates a recommended Result type and error handling pattern for business logic. - Outlines best practices for structuring production-grade .NET backend applications.