Build Shopify apps, extensions, themes using GraphQL Admin API, Shopify CLI, Polaris UI, and Liquid.
TRIGGER: "shopify", "shopify app", "checkout extension", "admin extension", "POS extension",
"shopify theme", "liquid template", "polaris", "shopify graphql", "shopify webhook",
"shopify billing", "app subscription", "metafields", "shopify functions"