Worked on the ssciwr/mondey repository to modernize the frontend toolchain by updating key dependencies such as Svelte, Vite, Playwright, and ESLint-related packages. Focused on improving security, stability, and development velocity, the work involved comprehensive package management and frontend development using JavaScript and TypeScript. By consolidating dependency updates into a single targeted commit, the changes reduced technical debt and streamlined the build and development processes. This approach laid the foundation for faster iteration cycles and more reliable releases, ensuring the codebase remains maintainable and compatible with the latest tooling standards while addressing long-term project sustainability.