Worked across the NomicFoundation/hardhat and Sovereign-Labs/sovereign-sdk repositories to address reliability and documentation issues using Node.js, TypeScript, and Regex. Improved the hardhat filename utility by sanitizing Windows reserved device names, ensuring valid file creation while preserving extensions and adding targeted unit tests to verify correct handling. Enhanced developer onboarding in sovereign-sdk by correcting a broken documentation link in the sov-sequencer README, streamlining navigation for new contributors. Focused on precise bug fixes with clear commit history and regression checks, contributing to smoother workflows, stronger CI feedback, and improved cross-platform compatibility without introducing new features during the development period.