dotnet-design-pattern-review

# .NET/C# Design Pattern Review Review the C#/.NET code in ${selection} for design pattern implementation and suggest improvements for the solution/project. Do not make any changes to the code, just provide a review. ## Required Design Patterns - **Command Pattern**: Generic base classes (`CommandHandler<TOptions>`), `ICommandHandler<TOptions>` interface, `CommandHandlerOptions` inheritance, static `SetupCommand(IHost host)` methods - **Factory Pattern**: Complex object creation service provider integration - **Dependency Injection**: Primary constructor syntax, `ArgumentNullException` null checks, interface abstractions, proper service lifetimes - **Repository Pattern**: Async data access interfaces provider abstractions for connections - **Provider Pattern**: External service abstractions (database, AI), clear contracts, configuration handling - **Resource Pattern**: ResourceManager for localized messages, separate .resx files (LogMessages, ErrorMessages) ## Review Checklist - **Design Patterns**: Identify patterns used. Are Command Handler, Factory, Provider, and Repository patterns correctly implemented? Missing beneficial patterns? - **Architecture**: Follow namespace conventions (`{Core|Console|App|Service}.{Feature}`)? Proper separation between Core/Console projects? Modular and readable? - **.NET Best Practices**: Primary constructors, async/await with Task returns, ResourceManager usage, structured logging, strongly-typed configuration? - **GoF Patterns**: Comma...