Refactored order creation logic to use new serializers and transaction handling, improving validation and modularity. Introduced admin and public endpoints for shop configuration with sensitive fields protected. Enhanced Zásilkovna (Packeta) integration, including packet widget template, new API fields, and improved error handling. Added django-silk for profiling, updated requirements and settings, and improved frontend Orval config for API client generation.
Major refactor of commerce models: restructured Carrier, Payment, and DiscountCode models, improved order total calculation, and integrated Zasilkovna and Stripe logic. Added new configuration Django app for shop settings, updated Zasilkovna and Stripe models, and fixed Zasilkovna client WSDL URL. Removed unused serializers and views in commerce, and registered new apps in settings.
