thai_qr_pay is a Ruby gem providing: - ASCII-numeric TLV parsing and encoding - EMVCo CRC-16/IBM-SDLC checksum computation and validation - Generators for PromptPay AnyID, PromptPay Bill Payment, TrueMoney, etc. - Validators for slip-verify and TrueMoney slip verify payloads - BOT barcode → EMVCo QR Tag-30 conversion