post-purchase-extension
SDK reference for `@shopify/post-purchase-ui-extensions-react` — Shopify's post-purchase upsell surface (the screen between payment and the thank-you page). Distinct from modern `<s-*>` checkout-extensions, which have no post-purchase target. Use when writing/editing JSX for this package or looking up a post-purchase component's props. TRIGGER when: code imports `@shopify/post-purchase-ui-extensions-react`; user mentions post-purchase upsell, ShouldRender, applyChangeset, or `Checkout::PostPurchase::*`; user edits files under `extensions/*post-purchase*/`.