Tæppe og sideafslutningslister til bagagerum

{# Menu cached per language; invalidated on every 1C import + electrocars sync. NEVER cache an empty menu (2026-07-29 incident): menu_categories comes back empty whenever its source cache (categories_with_products) is stale or the tree is mid-import, and caching that render froze a menu-less header on every page in all 19 languages until the fragment expired. Rendering the empty case uncached costs nothing (the loop is empty) and lets the very next request self-heal. TTL matches the 24h menu_categories_ data cache — a fragment must never outlive the data it was built from. #} {# Mega-menu markup only. Included TWICE from navigation_css3.html: cached when menu_categories is non-empty, uncached when it is empty — see the comment there. Keep the markup in this one file so both branches stay identical. #}