Ilia Zyrin enhanced the mrgnlabs/mrgn-ts repository by developing robust Marginfi scripting and configuration tooling, focusing on safer and more efficient borrowing workflows. Leveraging TypeScript, Solana, and Web3.js, Ilia refactored scripts for bank creation and group initialization, updated interface definitions, and introduced new account management utilities to streamline operations. The work included upgrading the Marginfi client and implementing example configurations for borrowing scenarios, which improved both developer experience and production reliability. By consolidating fixes and expanding test coverage, Ilia reduced setup complexity and mitigated misconfiguration risks, demonstrating a thoughtful, detail-oriented approach to DeFi infrastructure engineering.