Over a two-month period, contributed to the finalburnneo/FBNeo and shadps4-emu/ext-SDL repositories by focusing on build automation and stability improvements. Restored and enhanced the nightly macOS CI/CD pipeline for FBNeo, utilizing GitHub Actions and YAML to automate Xcode Release builds and streamline packaging and release asset uploads. Addressed application stability by implementing a null check in FBNeo to prevent crashes when no game is loaded, and resolved a type mismatch in ext-SDL’s VSync callback by updating the handler signature in C. These efforts improved reliability and reduced manual intervention, emphasizing core development and cross-platform compatibility for end users.