Slim overview across EN/zh/JA, drop badges/blockquote/contributing, trim LICENSE header; fix the English switcher to point at the repo homepage instead of the GitHub site root.
Project is now private; remove LICENSE file, README license
section, and "MIT · MMXXVI" footer tags. Root package.json
license set to UNLICENSED.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>