During May 2026, this developer delivered the Vespertine Theme Extension for the zed-industries/extensions repository, focusing on front end and theme development. They integrated the new theme as a Git submodule, updating both .gitmodules and extensions.toml to support modular theming within the Zed development environment. Using Git and TOML, they validated the extension locally to ensure seamless installation and functionality. This work enhanced customization options and maintainability, laying a modular foundation for future theme extensions. Although no bugs were fixed during this period, the contribution improved developer experience and accelerated the process for future extension iterations within the Zed ecosystem.