Worked on the levizh/rt-thread repository to enhance build stability and code quality in embedded systems projects. Focused on resolving Kconfig warnings by assigning unique names to previously anonymous configuration options, which reduced build noise and simplified cross-platform maintenance. In addition, addressed compiler warnings in the WLAN driver by updating function signatures for MAC address handling and introducing null pointer validation, thereby improving runtime safety and maintainability. Utilized C, Kconfig, and embedded systems configuration skills to deliver targeted bug fixes, demonstrating a methodical approach to codebase hygiene and reliability without introducing new features during the two-month contribution period.