- Wallet balance + transaction history per participant
- Installment/payment plan tracking with progress percent
- Document listing with expiry status summary
- Event detail + registration from mobile (duplicate check)
- Product order flow with Paymob fallback (graceful when unconfigured)
- API rate limiting: 60/min general, 10/min auth, 3/min OTP, 5/min payments
- Production-safe error responses (no stack traces when APP_DEBUG=false)
- 40 total API endpoints
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>