Replaced String.Empty and null! with string.Empty for string properties
in CatalogReadDto, CatalogWriteDto, and VwmyCatalog classes. This
ensures consistent initialization and helps prevent null reference
issues across the codebase.
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.
- 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.
