During February 2026, Yuanwei focused on backend stability and process management for the iOfficeAI/AionUi repository, addressing reliability issues in ACP-based conversations. Yuanwei enhanced CLI process lifecycle management by overriding the kill() method in TypeScript, ensuring proper cleanup of child processes and preventing orphaned processes during conversation termination. The work included implementing idempotent safeguards, diagnostic logging, and well-defined timeouts to avoid resource leaks and hangs. Additionally, Yuanwei unified authentication logic and model selection UX across frontend and backend, refactoring shared hooks and constants to streamline maintainability. This engineering effort improved error handling and established a foundation for future scalable enhancements.