Chris developed cross-repository support for the Kos programming language, focusing on editor integration and language tooling. In the macvim-dev/macvim repository, Chris implemented file type detection for .kos files, enabling accurate syntax highlighting and editor behavior for Kos code. For nvim-treesitter/nvim-treesitter, Chris built a Kos parser in Lua, adding features such as code folding, local variable management, and enhanced syntax highlighting for language constructs like floats and string interpolation. This work improved the development experience for Kos projects by providing robust language support in popular editors. The technical approach demonstrated depth in parser development and text editor integration.