Worked on the likec4/likec4 repository to deliver a self-contained single-file build system, focusing on inlining favicon assets directly into the HTML as base64 data URIs. This approach addressed issues where post-build cleanup previously removed external favicon files, which could result in broken references and runtime 404 errors. The solution preserved the existing multi-file build process while enhancing the --output-single-file path for improved reliability and distribution. The work involved using Node.js, TypeScript, and the File System API, with unit testing and Vite to ensure robust build outputs and reduce support overhead related to missing favicon assets.