Only breadcrumb logic anywhere in the storefront was a local signal +
inline markup inside catalog-container. Extracted a generic
shared/ui/breadcrumb component (rootLabel/items/ariaLabel inputs,
rootClick/itemClick outputs) and repointed catalog-container onto it,
removing the now-dead inline SCSS block. Future breadcrumb usages
(product detail, admin) have something to reuse instead of duplicating.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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