Over a two-month period, this developer contributed to both the better-auth/better-auth and zero-one-group/monorepo repositories, focusing on CLI and mobile development. In better-auth/better-auth, they enhanced the Kysely CLI by introducing an optional filename argument for migration generation, improving schema reliability and reducing deployment risks through robust Bash and JavaScript scripting. In zero-one-group/monorepo, they built an Expo-based React Native template with integrated navigation, Home and Settings tabs, and a foundational authentication flow, while also producing onboarding documentation. Their work emphasized maintainable project structure, consistent monorepo management, and clear technical writing, supporting scalable onboarding and streamlined feature delivery.