Product cards now match the color or size a shopper asks for

When a shopper asked for a specific option ("anything in pink?"), the product card didn't always agree with the assistant's own reply. The text correctly named the pink version, but the card kept showing the product's default photo and price, whichever variant that happened to be. That's fixed: when the assistant identifies the exact variant a shopper wants, the card now opens on that variant's own photo and price.

Cards for products with 2 or more options (color, size, etc.) also get a picker directly on the card. A shopper can switch options themselves: the photo and price update immediately, with no reload and no extra question to the assistant. An option that's out of stock is clearly marked and can't be added to cart.

Add to cart is now available on every product card, including multi-option products. Previously, a multi-option product only showed a "View product" link, with no way to add it to cart from the carousel.