- replace CLI menu with multi-panel Textual interface (sidebar & data table)
- implement asynchronous loading for domains and DNS records via worker threads
- add support for optional 2FA/TOTP auto-unlock and manual TAN modal
- introduce .env configuration fallback for stored credentials
- add modals for creating, editing, and deleting DNS records
- enable inline row editing via mouse double-click and keyboard navigation
- update project documentation in README.md