Worked on security hardening and reliability improvements for the vercel/turborepo repository, focusing on backend infrastructure rather than user-facing features. Addressed a critical bug by refactoring command execution logic to prevent shell interpretation of executable paths, thereby reducing the risk of shell injection vulnerabilities. Utilized Node.js and TypeScript to transition from cp.execSync to cp.execFileSync within the probeInternalLsp workflow, ensuring safer and more reliable process handling. Enhanced maintainability by clarifying environment-driven executable resolution and consolidating alert variants into a single change. The work emphasized robust, secure backend practices and contributed to the overall stability and security of the codebase.