chore: immaculate upgrade — add canonical tags, fix YAML front-matter, remove superlatives, downgrade SLSA L3→L1, update canonical numbers to 2026-05-30 (24/26/2/12/217/7/35/7/8.3%)

100x visual upgrade: consistent YAML frontmatter, hero block, schema docs, provenance, cross-links, citation — Doctrine v6

feat(card): P3 polish — add hero, what-is-NOT, how-to-work (doctrine v6)

[doctrine-enforcer-L] 10/10 SZL Style Canon v6 — OG image, verification receipt, cross-link table, 11+ tags

mirror github.com/szl-holdings/carlota-jo@f71b2bad4e2b

initial commit