New "Brand Showcase" tab in Joomla template configuration embeds
brand-showcase.html — features color system gradients with hover-to-sample
pixel picker, branded nav, typography, buttons, badges, alerts, tables,
forms, cards, accordion, and tabs. Light/dark toggle included.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
