The slug field in the model now permits null values by adding `null=True`. This change enhances flexibility in scenarios where slugs may not always be mandatory.
Introduce a unique, auto-generated slug field to the Product model, populated from category, brand, and name. Update core filters, serializers, sitemaps, and GraphQL object types to support the new slug functionality. Also, enforce HTTP-only cookies for session, CSRF, and language for improved security.
