Mikhail Mishankov developed extensible theming capabilities for the zed-industries/extensions repository, focusing on building the Plato Themes submodule to support cross-project theme customization. He established a modular architecture that enables scalable theming and design-system alignment across multiple modules, laying the groundwork for future extensibility. His technical approach involved submodule management and version control using Git, with configuration handled through TOML. Mikhail documented the contribution workflow and referenced it in pull requests to streamline future enhancements and collaboration. Over the course of the month, his work provided a foundation for consistent theming, addressing the need for maintainable and customizable design systems.