Over a two-month period, contributed to both the rolldown/rolldown and vitejs/devtools repositories by delivering targeted improvements in build tooling and frontend development. Addressed a critical bug in rolldown/rolldown by fixing the chunk filename formatting logic, ensuring correct substitution of output format placeholders and aligning with Rollup documentation. Enhanced reliability through expanded test coverage using JavaScript and TypeScript. In vitejs/devtools, implemented a dock context menu for the WebComponents client, enabling quick hide and refresh actions to streamline developer workflows. Collaborated cross-team and maintained clear commit practices, focusing on maintainable code and future extensibility with Vue and web components.