- Updated the roles table to use `code` as the primary key, enhancing readability and simplifying junction tables.
- Modified `user_roles` and `product_role_visibility` tables to reference `role_code` instead of `role_id`, maintaining many-to-many relationships.
- Added foreign key constraints and created new indexes to optimize queries.
- Removed the previous migration file that was no longer needed, ensuring a cleaner migration history.
- Updated related documentation to reflect the new schema changes and their benefits.
- Introduced a role-based visibility system for products, ensuring that only users with approved roles can view specific products.
- Added new database tables for roles, user roles, and product role visibility to manage access control.
- Implemented utility functions for role management, including fetching approved roles, checking product visibility, and assigning roles to users and products.
- Updated API endpoints to filter products based on user roles, enhancing security and user experience.
- Prepared the database schema for future role request and approval workflows in upcoming phases.
