Over a two-month period, Dev@modprog.de enhanced security and documentation across nextcloud/external and rhysd/pulldown-cmark. They implemented backend changes in PHP and Rust to add blob URL support to the Content Security Policy in nextcloud/external, enabling secure embedded content within iframes. In rhysd/pulldown-cmark, they refactored documentation to clarify Markdown feature usage and feature gating, improving developer onboarding and reducing integration ambiguity. Their work included precise code comments and alignment of documentation with actual parsing behavior, particularly for MetadataBlock. This focus on backend development, code refactoring, and security resulted in more reliable, maintainable, and developer-friendly repositories.