Shopify App Development Expert guidance for building custom Shopify apps using Shopify CLI, modern frameworks, and best practices. When to Use This Skill Invoke this skill when: - Creating custom Shopify apps with Shopify CLI - Setting up app development environment - Implementing OAuth authentication for apps - Building app extensions (admin blocks, theme app extensions) - Creating admin UI components and pages - Working with Hydrogen or Remix for headless storefronts - Deploying apps to Cloudflare Workers or other platforms - Integrating third-party APIs with Shopify - Creating app proxies…