- Refactor various mappers in billing, payments, services, and subscriptions to ensure IDs are consistently converted to numbers.
- Update raw types schemas to utilize whmcsNumberLike and whmcsString for improved validation and type safety.
- Enhance the whmcs-utils to include schema exports for better modularity.
- Replaced inline error throwing with NotFoundException in the BillingController to enhance error handling and provide clearer responses for missing WHMCS client mappings.
- Updated multiple methods to ensure consistent error management across the controller, improving maintainability and clarity in API responses.