- Add metadataBase to root layout so OG/Twitter/canonical URLs resolve
to absolute https URLs (fixes broken social previews)
- New src/lib/seo.ts with SITE_URL + JSON-LD builders
- New robots.ts (disallow api/admin/private app paths) and sitemap.ts
(marketing pages + blog posts with real lastmod dates)
- JSON-LD: Organization/WebSite/SoftwareApplication on home,
Blog+Breadcrumb on blog list, BlogPosting+Breadcrumb on posts
- Per-page canonical + Open Graph on all marketing pages; article OG
+ Twitter cards on blog posts; per-post dynamic OG image
- noindex on (app) and admin layouts; richer PWA manifest
- Fix CSP to allow plausible.io in script-src/connect-src (analytics
was silently blocked)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>