Added
- Public marketing site at www.zetamarker.com with locale routing (15 languages)
- Home page sections driven by marketing-editable MDX under
content/en/landing/ - Legal pages (Terms, Privacy, Refund) as MDX
- Blog and changelog sections with MDX authoring workflow
Improved
- SEO metadata, sitemap, robots.txt, and dynamic Open Graph images
Fixed
- N/A