During a two-month period, Felix Schwenke enhanced the SUSE/doc-sle and SUSE/doc-modular repositories by delivering targeted backend improvements and configuration features. He developed a configurable header language switcher for SUSE/doc-sle, enabling simplified headers for specific product configurations and laying groundwork for future customization. Felix also resolved a regression in link entity handling and refactored validation logic to address edge-case failures, improving documentation reliability and maintainability. His work involved Python and Shell scripting, with a focus on backend development, bug fixing, and configuration management. The changes reduced production risk and improved user experience by ensuring robust documentation delivery and clearer code structure.