mercadona-cli

Do the grocery shop at Mercadona (tienda.mercadona.es) by driving the local `mercadona` CLI: turn a shopping list into real priced products, fill the cart, prepare delivery checkout, and (only on explicit go-ahead) place the order. Use this whenever the user wants to shop, price a grocery list, build a cart, or check out at Mercadona — including Spanish phrasings like "hazme la compra", "haz la compra de Mercadona", "compra en Mercadona", "añade X al carrito", "pídeme estos productos", "¿cuánto cuesta esta lista?", and English ones like "do my Mercadona shop", "price this grocery list at Mercadona", "fill my Mercadona cart", "order these groceries". Trigger even when the user just pastes a list of groceries and mentions Mercadona without saying "skill" or "CLI". Also use when the user wants to cook a dish or recipe and buy the ingredients at Mercadona ("quiero hacer una paella", "ingredientes para una cena para 6"): it asks how many people and any allergies before it prices, so it never guesses the headcount.