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Add new mock image files for design reference and update existing mock image.

Remove yarn.lock file as part of dependency management cleanup.

Add package-lock.json and update dependencies in package.json and studio/package.json; remove studio/yarn.lock

Replace now.json with vercel.json configuration for deployment settings, updating framework specification to Vue.

Refactor API endpoints to use ES6 module syntax and improve CORS handling. Updated response methods to use res.status().json() for consistency and clarity.