refactor: gr-readme upgrade — verb-first tagline, install before stats, 3-second conversion

docs: deep optimization — task_categories, Citable Stats (AFFiNE 0→60K / 43d to 10K / 28 GitHub Trending), JSON-LD (SoftwareApplication + FAQPage), drop ClawHub refs, switch install to skills.sh

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

Update README: hook + template description structure

docs: fix dead blog/repo links to gingiris.tools

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

Add SKILL.md for ClawHub publish

Add internal linking to related skills

SEO/GEO optimization: add YAML frontmatter, multilingual summaries, HF links

SEO/GEO optimization: add YAML frontmatter, multilingual summaries, HF links

initial commit