Complete Open Graph coverage across all public pages:
- Home page: og:title (site name), og:description, og:type=website,
og:url, og:site_name
- Tag browse: og:title with tag name, og:description with count,
og:url, og:site_name
- Profile: add og:description using bio (truncated to 200 chars)
with fallback to generic text
Previously only fave detail and profile (without description) had
OG tags.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>