I want to build a complete custom Zoho Commerce storefront through Edit Code, including:

• Global header and footer

• Responsive homepage

• Category, search and filter pages

• Product cards and product-detail pages

• Cart and checkout wrapper

• Mobile navigation

• Theme images, CSS/SCSS and JavaScript

I want to build this correctly without affecting the live storefront or introducing FACE/template errors.

Could you please help with these four points:

1. Please provide, or link to, a current complete and working Zoho Commerce theme ZIP example. It should include the required FACE files, template.conf, CSS/SCSS, JavaScript, images and any required visual-editor configuration files—not a published-site HTML export.

2. What is the officially supported way to duplicate or create a separate unpublished theme, preview the complete design privately, and test it before replacing the active theme?

3. In Edit Code, do saved file changes remain unpublished until Publish? What is the official rollback method if an overridden FACE file, stylesheet or configuration file causes an error?

4. Is Upload Template available for Zoho Commerce, and what exact folder structure, required files, validation rules and ZIP format should be used? Is there an official validator or testing method for detecting FACE syntax errors, missing assets and invalid template.conf references before upload or publication?

Please provide Commerce-specific guidance rather than Zoho Sites instructions.

Thank you.