- Introduced `validateSignup` endpoint in AuthController for customer number validation during signup.
- Added `healthCheck` method in AuthService to verify service integrations and database connectivity.
- Implemented `getPaymentMethods`, `getPaymentGateways`, and `refreshPaymentMethods` endpoints in InvoicesController for managing user payment options.
- Enhanced InvoicesService with methods to invalidate payment methods cache and improved error handling.
- Updated currency handling across various services and components to reflect JPY as the default currency.
- Added new dependencies in package.json for ESLint configuration.
- Updated pnpm-lock.yaml to include new dependencies and ensure consistent package versions.
- Refactored order handling in OrderOrchestrator to utilize centralized field mapping for Salesforce queries.
- Modified SalesforceOrder interface to replace Order_Type__c with Type for clarity.
- Improved error handling in UsersService during WHMCS updates to provide user-friendly messages.
- Enhanced BillingPage and ProfilePage components to streamline address management and improve user experience.
- Updated documentation to reflect changes in address handling and system architecture.
