React Web & Mobile Social App

I am building a full-featured social network that must run smoothly as a React.js web application and as a React Native mobile app. Both fronts will share a single code style, design language, and backend, but each should feel truly native to its platform.

Core scope
• Web: React.js SPA that handles user sign-up/login, profile creation and editing, a real-time messaging system, and an infinite-scroll activity feed.
• Mobile (iOS & Android): React Native implementation of the same user profiles, messaging, and feed, respecting mobile navigation patterns and push-notification standards.

Deliverables
1. Clean, well-commented React.js code for the social network web app.
2. Parallel React Native codebase compiled and tested for iOS and Android.
3. Shared UI components where practical, plus platform-specific tweaks where necessary.
4. Basic unit tests and instructions to run, build, and deploy each target.

Acceptance criteria
• All three key features—user profiles, messaging, activity feed—must be fully functional on web and mobile.
• Code builds without errors and passes provided unit tests.
• UI follows platform conventions and remains responsive down to 360 px width on web and all common phone screen sizes on mobile.
• Any third-party libraries are documented and kept to current stable versions.

GitHub (or comparable) commit history will be required to track progress, and I will handle backend/API provisioning so you can focus strictly on the React and React Native layers.