Matan Kazachinsky refactored the frontend of the FIRSTIsrael/lems repository to unify UI state management through the URL, introducing a custom useQueryParam hook. This approach centralized the logic for reading and updating query parameters, specifically handling active tabs and the current award index, which now persist in the URL for improved session continuity and shareability. By consolidating query parameter handling, Matan reduced frontend complexity and enhanced maintainability, laying groundwork for more predictable navigation. The work was implemented using React, Next.js, and TypeScript, demonstrating a focused application of frontend development and hooks to solve state persistence and navigation challenges.