Worked on the anthropics/claude-cookbooks repository to deliver research agent prompt enhancements that enable citation generation, task delegation, and structured research planning through improved lead agent and subagent prompts. Focused on prompt engineering and agent architecture, the work introduced new workflows for research automation, allowing for more reliable evidence gathering and decision-making in complex research tasks. All changes were documented in Markdown and integrated with clear, traceable commit messages to support open-source collaboration. The approach emphasized modular prompt design and explicit documentation, strengthening both the technical robustness and collaborative workflow of the repository without addressing bug fixes during this period.