During March 2026, Kahsieh developed two cross-repository features focused on artifact management and session user experience for the ADK platform. Working across google/adk-python and google/adk-web, Kahsieh introduced session-state deltas and new state handling in the SaveFilesAsArtifactsPlugin, ensuring artifact changes are reliably stored before event actions. This approach improved integration between Python backend plugins and Angular-based Web UI components. Additionally, Kahsieh enhanced the chat interface to render artifacts when resuming sessions, allowing users to view relevant files alongside messages. The work demonstrated depth in asynchronous programming, TypeScript, and unit testing, with comprehensive tests validating state management and rendering flows.