Enforce immutability of CatTitle on updates: backend now rejects title changes with a BadRequest, and frontend disables the title input field when editing.
Added CatalogUpdateProcedure enum to domain. CatalogWriteDto now includes UpdateProcedure property in both application and BlazorWasm layers. Catalogs.razor form allows users to choose between PRTBMY_CATALOG_UPDATE and PRTBMY_CATALOG_SAVE when editing. Repository, service, and handler layers updated to pass and use the selected procedure. Default remains Update. Updated comments and TODOs for clarity and future refactoring.
Refactored CatalogApiClient methods to return ApiResult<T> for create, update, and delete operations, enabling more detailed error reporting. Introduced ApiResult<T> and ProblemDetailsDto types, and added logic to parse and display informative error messages. Updated Catalogs.razor to use the new pattern and show user-friendly error feedback. Added necessary using directives.
- Split `CatalogDto` into `CatalogReadDto` and `CatalogWriteDto` for clear separation of read/write operations in both backend and frontend.
- Updated API controllers, services, and AutoMapper profiles to use new DTOs; ensured audit fields are set in service layer.
- Enabled CORS in the API project to support Blazor WASM frontend.
- Added new Blazor WebAssembly project (`DbFirst.BlazorWasm`) with catalog management UI, API client, Bootstrap v5.1.0 styling, and configuration-driven API base URL.
- Included `bootstrap.min.css` and its source map for frontend styling and easier debugging.
- Updated solution file to include new project and support multiple build configurations.
- Result: improved API design, clean DTO separation, and a modern interactive frontend for catalog management.
