Francisco Trujillo worked on the finalburnneo/FBNeo and shadps4-emu/ext-SDL repositories, focusing on build automation and stability improvements. He restored and enhanced the nightly macOS CI/CD pipeline for FBNeo, leveraging GitHub Actions and YAML to automate Xcode Release builds and asset packaging, which reduced manual intervention and improved release reliability. In core development, he addressed application stability by adding null checks in C and Objective-C to prevent crashes when no game is loaded. Additionally, he resolved a callback signature mismatch in SDL for ext-SDL, aligning the vsync_handler with expected types to ensure correct runtime behavior and user experience.