User feedback indicated need for payment confirmation flow ("لقد قمت بالدفع" - "I have paid"). Implemented end-to-end payment processing with premium tier management.

Implementation

Backend (api/payment_processor.py)

• Flask Blueprint with 5 REST endpoints for payment lifecycle
• SHA-256 payment ID generation, 24h expiry, 30d premium activation
• Three-tier pricing: Basic ($9.99), Pro ($29.99), Enterprise ($99.99)
• Premium status tracking per user with feature gates

# Create payment request
POST /api/payment/create
{"user_id": "user123", "plan": "pro", "amount": 29.99}

# Confirm payment
POST /api/payment/confirm  
{"payment_id": "abc123", "transaction_ref": "txn_456"}
→ Premium activated for 30 days

Frontend (payment-confirmation.html)

• Bilingual (AR/EN) responsive UI with plan selection
• Two-step flow: request creation → confirmation
• Real-time status updates via AJAX

Testing

• 11 unit tests covering payment lifecycle, edge cases, error handling
• Integration test suite for API endpoints
• CodeQL: 0 vulnerabilities

Dependencies

• Added flask>=3.0.0, flask-cors>=4.0.0, requests>=2.31.0

Notes

Demo implementation - production requires payment gateway integration (Stripe/PayPal), HTTPS, PCI DSS compliance.

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