feat: Add Safucard Project to Example-Hub

[Domistro16]

Description

I submitted a new Typescript project called Safucard. More Details About the project are found in the project directory

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How I Tested

Backend (SafuServer)

• Ran the Express server locally using npm run dev
• Confirmed API endpoint ( /api/address/:address) returned valid responses
• Used Postman and curl to test edge cases and invalid addresses
• Verified CORS setup for frontend integration

Smart Contract (Scorecard.sol)

• Deployed the contract to BSC testnet using hardhat
• Verified correct ownership on BSC testnet explorer

💻 Frontend (React + Vite)

• Connected wallet using RainbowKit and wagmi
• Tested full flow:
  • Input wallet address
  • Clicked “Search” and saw loading states work properly
  • Verified accurate data rendering for score, tier, and NFTs
• Used the “Download” and “Fullscreen” buttons and confirmed expected behavior
• Mobile responsiveness tested on iOS Safari and Android Chrome

🧪 Extra

• Manually tested with different wallets: empty wallets, high-value wallets, invalid addresses
• Ensured UI feedback and error handling were

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings