Developed and integrated a Todo Highlight Language Server extension into the zed-industries/extensions repository, focusing on enabling semantic token-based keyword highlighting for TODOs, FIXMEs, and similar markers across multiple file types such as Rust, Markdown, and YAML. Leveraged extension development skills, Git submodules, and TOML configuration to streamline setup and maintainability. Implemented a lightweight LSP server that scans buffers and emits semantic tokens, ensuring consistent cross-platform highlighting. Released version 0.2.0 with prebuilt binaries for ease of installation, and validated the extension locally within the Zed development environment to ensure reliable behavior and compatibility across supported languages.