Leonhard Kühnel contributed to the plentymarkets/plentyshop-pwa repository by delivering an SEO-focused feature that enhanced guidance for Rich Snippets implementation. He updated the copy to clarify how item data fields map to Schema.org, aiming to improve metadata clarity and search engine visibility. Working primarily with JavaScript and Vue.js, Leonhard aligned the changes with established SEO and TCD guidelines, ensuring consistency across storefront content. The work involved close collaboration with other contributors and careful management of Git-based changes. While the scope was limited to a single feature over one month, the update addressed a targeted need for improved SEO documentation and usability.