Anton Mihailov worked on enhancing the toast notification component in the salute-developers/plasma repository, focusing on design-token-driven UI improvements to increase consistency and themability. Using React, JavaScript, and TypeScript, Anton introduced a new shadow token and added support for positive, negative, and informational toast variations, enabling clearer user feedback and visual differentiation. He also refined design token naming and updated Storybook configurations to align with the broader design system, facilitating easier theming and future component updates. The work addressed UI scalability and reduced the need for custom CSS, but was limited in scope to a single feature over one month.