Developed and delivered the Sub-Agent Internal Event Emission feature for the cloudwego/eino repository, enabling sub-agents to emit internal events that are reliably propagated to their parent agent. This work involved updating event generation and handling logic to address edge cases in the emission path, ensuring correct processing and reducing the risk of event loss. By enhancing observability and tracking of inter-agent events, the changes improved troubleshooting speed and event provenance. The implementation demonstrated proficiency in Go, backend development, and event-driven architecture, with disciplined version control practices supporting robust inter-agent communication and increased reliability within distributed systems.