Branding customization today is limited to CSS. Admins who need dynamic elements on scheduling pages or forms, such as countdown timers, interactive components, or custom tracking scripts, can't add them without JavaScript support.

Requested behavior: Allow admins to inject custom JavaScript into scheduling pages and forms, enabling advanced branding and interactive elements beyond what CSS alone can support.

Why it matters: CSS-only customization covers basic visual styling but not dynamic behavior. Teams with more sophisticated branding or tracking requirements are blocked without JS support.