Contributed to the rybbit-io/rybbit repository by developing six features and addressing codebase hygiene, focusing on both backend and frontend improvements using TypeScript, React, and Next.js. Work included implementing a dynamic version display sourced from package metadata, enhancing mobile usability for the activity calendar, and introducing a configurable sign-up gating mechanism via environment variables. Refactored conditional class handling for UI consistency and improved dependency management by ensuring reliable lock file generation. Additionally, updated the grammyjs/website repository to document Telegram Bot API 10.0 features, aligning technical documentation with upstream changes and supporting developer onboarding through precise, collaborative technical writing.