- Added '@vercel/analytics' to package.json for improved analytics tracking.
- Updated 'next' version from 15.0.2 to 15.0.3 to incorporate the latest features and fixes.
- Refactored API routes for invitations and studies to improve error handling and response structure.
- Enhanced permission checks in the invitations and studies API to ensure proper access control.
- Removed the participants dashboard page as part of a restructuring effort.
- Updated the database schema to include environment settings for users and studies.
- Improved the dashboard components to handle loading states and display statistics more effectively.
- Renamed DATABASE_URL to POSTGRES_URL in .env.example for clarity.
- Added SMTP configuration for email sending, including host, port, user, password, and from address.
- Updated package.json to include new dependencies for email handling and UI components.
- Modified middleware to handle public and protected routes more effectively.
- Enhanced API routes for studies to support user roles and permissions.
- Updated database schema to include invitations and user roles related to studies.
- Improved user permissions handling in the permissions module.
- Added new utility functions for managing user roles and study access.
