Locale & Checkout Rail Routing SOP.
Primary global rail: Gumroad (USD). Turkish rail: Shopier (TRY) at shopier.com/autonomax. LemonSqueezy is disabled and never used in production. Routing: 1. Turkish visitors land on aikagan.com/tr (middleware uses the IP country header, accept-language and the aikagan_locale cookie). 2. /tr product pages show the Shopier TRY button first once a listing is published (config/shopier-catalog.json), with Gumroad USD as the alternative. 3. All other visitors get the Gumroad rail. 4. Shopier orders arrive by signed webhook (REST order.created or legacy OSB), are mapped to the SKU by Shopier product id, recorded in the income ledger and fulfilled by email. 5. If a rail fails, /checkout/manual keeps the buyer from being stranded.