- Updated `.env` and `.env.test` files to include PostgreSQL connection settings and Redis configuration.
- Migrated database from SQLite to PostgreSQL, updating relevant queries and connection logic.
- Enhanced error handling and logging throughout the application.
- Added new test utilities for PostgreSQL integration and updated user model methods.
- Introduced new routes for user authentication and form management, ensuring compatibility with the new database structure.
- Created login and registration views in EJS for user interaction.
- Updated `.env` and added `.env.test` for environment variables.
- Introduced API documentation in `API_DOCUMENTATION.md`.
- Added authentication setup guide in `AUTHENTICATION_SETUP.md`.
- Implemented user authentication with JWT and email verification.
- Created new routes for user management and form submissions.
- Added middleware for API key authentication and error handling.
- Set up Redis for rate limiting and notifications.
- Removed obsolete files and configurations related to the previous Rust implementation.
