- Implemented API endpoint for managing software versions in `products_software_versions.php`.
- Created management page for software version assignments in `products_software_assignments.php`.
- Developed upgrade paths management functionality in `products_software_upgrade_paths_manage.php`.
- Enhanced software version details page in `products_software_version.php`.
- Added form handling and validation for software version creation and updates in `products_software_version_manage.php`.
- Introduced pagination and filtering for software versions in `products_software_versions.php`.
- Implemented success message handling for CRUD operations across various pages.
- Added software.php for managing software versions, including download and purchase actions.
- Created upgrade_paths.php for handling upgrade paths management.
- Developed user_licenses.php for managing user licenses.
- Introduced version_access_rules.php for managing access rules for software versions.
- Implemented frontend functions in functions.js for interacting with the software upgrade API.
- Added version_access.php for user access validation and license management.
- Created upgrades.php for displaying available upgrades and handling user interactions.
- Enhanced UI with responsive design and progress indicators for downloads and purchases.
