Contributed a documentation enhancement to the google/adk-python repository by introducing a beginner-friendly explanation of the Agent concept, positioned before the single-agent example to improve user onboarding. Focused on technical writing and user onboarding, the update was implemented exclusively in Markdown, ensuring no impact on runtime behavior or the need for additional tests. The work aligned with established contribution guidelines and was integrated through the standard pull request workflow. By clarifying core concepts for new users, the change aimed to reduce onboarding friction and make the documentation more accessible, reflecting a targeted approach to improving developer experience through clear, concise documentation.