Add ClawHub install CTA + 30-Second Preview block to dataset card

Update README: hook + template description structure

Update README with dataset card, Twitter link, and cross-platform CTA

chore: add YAML metadata frontmatter for HF dataset SEO

i18n: Add full Chinese, Japanese, Korean README translations

SEO/GEO optimization: multilingual descriptions, FAQ schema, JSON-LD, keyword density, badges

feat: initial release - SEO/GEO Agent SOP skill