SuperSite2 / ResellerClub - CinetPay (XAF only)

1) Edit functions.php:
   - RC_SECURE_KEY
   - CINETPAY_SITE_ID / CINETPAY_API_KEY / CINETPAY_SECRET_KEY

2) Upload folder to your HTTPS server.
3) ResellerClub Gateway URL:
   https://your-domain/path/paymentpage.php
   Checksum Algorithm: MD5

Amount rule (requested):
- Drop decimals
- Round UP to nearest multiple of 5
  5997 -> 6000
  8982 -> 8985

Logs:
- logs/cinetpay.log
State fallback:
- _tx_state/tx_{transid}.json
