Menu Creation:

• Use add_menu_page and add_submenu_page to create an admin menu named 'Courses' with sub-menus 'All Courses' and 'New Course'.

Custom Post Type:

• Register the custom post type 'tg-course' with fields (Title, Description, Image, Price, Category, Status) using register_post_type.

All Courses Page:

• Develop a React-based admin interface to list all courses.
• Implement actions for editing, deleting, and viewing courses.
• Add a button to add new courses.
• Implement search by Title, filter by Status, and sort by Title using React Query.
• Add pagination using Chakra UI components.

Course Listing:

• Create a shortcode to list all courses.
• Implement pagination and Ajax search for courses.
• Ensure clicking on a course redirects to a single course page.

Custom Query:

• Develop a custom query to retrieve free or paid courses.

Translation Ready:

• Make the plugin translation-ready using WordPress internationalization functions.

Security:

• Implement sanitization and escaping for all inputs.
• Use nonces for form and URL security.

Extensibility:

• Add hooks and filters to allow easy extension of the plugin.

Code Quality and Documentation:

• Follow PSR-4 coding standards.
• Write clear doc comments and maintain consistent code formatting.