Allow Storefront customization.

Please add deeper storefront customization, especially for the hosted checkout. Key needs:

• Themes/templates and brand controls (colors, typography, buttons)
• Editable sections (header, hero, product cards, FAQ, footer)
• Custom fields on checkout (e.g., social handles, VAT, company name)
• Optional overlay/embedded checkout
• Localization and country-based payment methodsThis would help merchants improve conversion and better match their brand without custom code.