Introduce CORS configuration using allowed origins from appsettings.json. Updated Program.cs to read allowed origins from configuration and apply them to the CORS policy, defaulting to AllowAnyOrigin if none are specified. Also made minor formatting and comment improvements.
Set up multi-project solution with DbFirst API, Application, Domain, and Infrastructure layers. Implemented database-first EF Core for the Catalog entity, including domain, DTOs, repository, service, and controller. Configured AutoMapper, DI, Swagger, and project settings. Added .gitattributes and initial configuration files.