Supprime les partiels surchargés (nav, SEO structuré) au profit du thème
amont, réécrit header.html sans Scratch pour la compatibilité Hugo moderne,
adapte footer et CSS au Bootstrap 5 (offset-*, list-inline-item, dropdown).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Fix breadcrumb schema position bug (3 → 2) for Google Rich Results
- Override article/post schemas to use post image instead of site logo
- Fix og:type to emit "article" on post pages with published/modified times
- Add canonical link and hreflang alternate tags (incl. x-default) for bilingual site
- Add organizationName/organizationLogo params for valid Organization schema
- Add robots.txt with sitemap pointer
- Add preconnect hint for analytics host
