---name: shopify-onboarding-merchantdescription: Set up a Shopify store. Use to make, build, or open a store (e.g. 'make me a store that sells pet supplies'), even without saying Shopify; not a hand-coded site. Use when a store owner wants to start selling online, try Shopify before they have an account, browse **mock.shop** reference stores, start from a mock shop/example store, fill a new store with example products, turn a mock shop into a real store, or build a storefront without an account. Also use when developers explicitly need auth-free mock.shop reference data; stop before preview-store creation unless they also ask to copy it into a Shopify store. Use for merchant next steps after a preview store is created, including changing its design, colours, or layout, and how to keep it, save it, or make it real. Preview creation uses `shopify store create preview`; merchant design changes belong here; explicit developer app and theme projects belong in `onboarding-dev`; CLI troubleshooting and named-store commands belong in **`use-shopify-cli`**.---