Move ~80 inline style= attributes from product.ex into ~40 CSS classes
in @layer components. Only genuinely dynamic values (hex colours,
background-image URLs) remain as inline styles. Pre-declare CSS layer
order in shop_root.html.heex so reset < components in the cascade.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- esbuild profile for shop.css bundling (dev watcher + build aliases)
- shop.css loaded as second stylesheet in shop_root layout
- LiveView display:contents rule in reset layer
- updated Lighthouse + Screenshots tasks for new esbuild target
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>