During February 2026, Mark Murphy enhanced the JetBrains/koog repository by delivering the DevstralMedium Document Handling Capability. He extended the DevstralMedium model with LLMCapability.Document, enabling automated document-related tasks and laying the foundation for enterprise document workflow automation. His work involved prompt engineering and model extension using Kotlin, integrating the new capability to streamline document processing. By addressing prompt integration and closing issue #1482, Mark aligned the feature with the Koog roadmap and improved processing efficiency. This contribution demonstrated depth in AI development and software engineering, resulting in a robust, end-to-end feature that supports downstream automation within the Koog platform.