tw-ecom-payment-tappay

Integrate TapPay for Taiwan e-commerce — TapPay Web/iOS/Android SDK, 3DS 2.0 flow, Apple Pay / Google Pay / LINE Pay integration via TapPay, TCS (TapPay Card Service) for tokenized recurring payments. Use when TapPay is chosen as PSP, comparing TapPay vs NewebPay, or debugging 3DS flows. Do NOT use for other gateways. STATUS: SKELETON — body pending.