RadarPay

A React Native (Expo + TypeScript) app for registering and verifying payment QR codes.

Blockchain anchoring and QR scanning are not implemented yet — lib/ and the Register/Verify screens are scaffolded placeholders.

Stack

• Expo SDK 52 + Expo Router (file-based routing)
• TypeScript (strict)
• NativeWind v4 (Tailwind for React Native)
• React Query (@tanstack/react-query)
• Zustand (client state)

Getting started

npm install
npx expo start

Then press i (iOS simulator), a (Android emulator), or w (web), or scan the QR with Expo Go.

Project structure

app/
  _layout.tsx     # Root layout: Expo Router stack + React Query + NativeWind
  index.tsx       # Home screen (logo, Register/Verify buttons)
  register.tsx    # Register QR (placeholder)
  verify.tsx      # Verify QR (placeholder)
components/
  Button.tsx      # Reusable button (primary / secondary)
  Card.tsx        # Surface container
lib/
  blockchain.ts   # On-chain register/verify stubs
  hash.ts         # Payload hashing stub
store/
  useAppStore.ts  # Zustand store
types/
  index.ts        # Shared domain types

Notes

• App icons / splash assets are intentionally omitted; add them under assets/ and re-reference them in app.json before building for stores.