LIVE: HeaderV2.jsx NAV array has {label:'Shop', to:'/shop'} — a plain link. DOM probe hasShopDD=false. Legacy Header.jsx already has a navbars_categories layer + per-category submenu scaffold to reuse.
Hovering Shop opens a mega-panel laid out like Sophie's mockup: each website category column with its subcategories beneath, every entry linking to /shop?cat=…&sub=….
CLOSED & VERIFIED. Shipped v233 → v234. Hovering Shop opens a mega-dropdown with all 8 website categories + subcategories (Sophie taxonomy), each linking to /shop?cat=&sub=. Chrome-verified the panel renders and the sub-links filter. Live: /v234/shop.
Reference: Sophie's Shop hover-dropdown mockup (in her Jun 11 email) + the mapping sheet for category/subcategory structure.
src/components/HeaderV2.jsxsrc/components/ShopMegaMenu.jsx (NEW)src/components/HeaderV2.csssrc/config/taxonomy.jsProgress URL updates here when this task ships to its target /vN/. Current column always points at the live baseline.