Worked on the zed-industries/extensions repository to deliver a comprehensive architecture and UI overhaul for the Mau Extension. This involved a complete rewrite of the data schema to version 0.2, applied consistently across all Mau themes, and the creation of a four-tier UI hierarchy to support flexible theming. The update introduced new themed UI options, including Helix-default, GitLab-inspired light, and Monokai-rooted dark, unifying the user experience and branding. Leveraging skills in theme development, UI design, and version control, the work established a stable foundation for cross-theme parity and enabled faster feature delivery, using TOML for configuration and schema management.