- Introduced language normalization utility functions to standardize language codes across the application.
- Updated ContractUploadController to resolve requested language from contract data and user settings.
- Enhanced authMiddleware to set preferred language in user object based on user settings.
- Added preferred_language column to user_settings table in the database.
- Implemented UserSettingsRepository to manage user settings, including preferred language updates.
- Updated DocumentTemplateService and AboContractService to support language-specific templates.
- Enhanced InvoiceService to select invoice templates based on normalized language codes.
- Added new script to compare versions of ABO contract documents.
- Refactored various services and repositories to utilize the new language normalization logic.
- Added RenewalCronService to handle automatic subscription renewals and reactivations.
- Introduced listPausedAutoRenew method in AbonemmentRepository to fetch paused subscriptions eligible for reactivation.
- Created test script for renewal cron job to simulate subscription renewal scenarios.
- Updated MailService to send renewal confirmation and payment reminder emails.
- Enhanced EmailVerificationService to auto-grant 'can_subscribe' permission upon email verification.
- Modified createAdminUser script to allow different admin email configurations.
- Added node-cron dependency for scheduling tasks.
