How the cart behaves
- A shopper has one cart, so every open conversation from them shows the same one.
- A closed conversation keeps the cart as it was; if the shopper writes again, the live cart returns.
- Signing in brings the cart along. An item Aide can't match to a synced product still shows, with the store's name and price.
- Changes made in another tab show when the shopper returns to the store's tab.
- The section hides while the cart is empty.
- Checkout is a separate surface. On Shopify Plus stores the chat there is support-only and opens when the buyer clicks it.