- Add is_hub_admin() and resolve_tenant_id_required() to core/security
- hub_admin resolves tenant from company or uses None as global sentinel
- Update routes and services to skip tenant filter when tenant_id is None
- UserService accepts is_hub_admin flag for cross-tenant user management
- get_my_companies returns all companies for hub_admin without tenant restriction
- Updated multiple DTO classes across various modules to replace the `Config` class with `model_config = ConfigDict(from_attributes=True)`.
- This change enhances consistency in attribute handling and aligns with the latest Pydantic practices.
- Adjusted error handling in core modules to change status codes from `HTTP_422_UNPROCESSABLE_ENTITY` to `HTTP_422_UNPROCESSABLE_CONTENT` for improved clarity in validation responses.
- Changed the default environment variable from 'development' to 'production' in docker-compose.prod.yml and docker-compose.yml.
- Added SITAR API credentials to the environment variables in both Docker Compose files.
- Updated the seed data for customs units of measure to include a76_unit_code.
- Refactored the UnitOfMeasureCustoms model and related DTOs to replace scaii_unit_code with a76_unit_code for consistency.
- Adjusted frontend components to reflect the updated unit of measure structure and ensure proper handling of the new a76_unit_code field.
- Introduced new routes for processing invoices in the router.
- Added `InvoiceStatus` enum to manage invoice states.
- Enhanced `InvoiceHeader` and `InvoiceFinancials` models with new fields for status tracking and total packages.
- Updated schemas to include new fields for invoice processing.
- Implemented API methods for processing invoices and checking process status in the frontend.
- Removed outdated validation files related to invoice processing.
