- Custom JSON-LD schema builder: per-article textarea for arbitrary
structured data with JSON validation. Closes#70
- AI-powered meta generation: Generate with AI buttons for OG title
and description, supports Claude and OpenAI APIs. Closes#71
- XML sitemap: auto-generates sitemap.xml on article save, respects
noindex directives. Closes#72
- Per-platform image resizing: Twitter 1200x600, Pinterest 1000x1500,
WhatsApp 400x400 alongside default Facebook 1200x630. Closes#74
- DB migration 01.05.00: adds custom_schema column