Pi Slot Game – Auto Pi Coin Payment + Menu + Login Integration (Pi Browser)

I’m looking for a developer to implement 3 essential features in my Pi Network slot game (already live on Pi Browser):

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1. Pi Browser Login (Authentication):
• User logs in with their Pi account
• Auto-creates user profile on first login
• Associates user with wallet address

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2. Automated Pi Coin Payment → Chips Credit:
• User clicks “Buy Chips”
• Pi payment request is generated via Pi API
• On successful payment, system auto-credits chips (1 Pi = 1000 chips)
• No manual approval

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3. Burger-Style In-Game Menu:
Menu should include:
• Buy Chips
• Withdraw (limit 2 Pi/day)
• User Profile
• Referral System (placeholder ok)
• Privacy Policy & Terms

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Preferred stack:
Backend: PHP or Node.js
Database: MySQL or Firebase
Must work fully inside Pi Browser

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I will provide:
• Access to Pi Developer Portal
• Hostinger hosting
• Live slot game frontend (https://piforspin.com)

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Screening Question:
Have you worked with Pi Authentication or Payment API before? Can you deliver auto-payment + login + menu integration inside Pi Browser?