Root package.json missing license/repository/author metadata

[dkritarth]

`cli/package.json` has full metadata (`license`, `repository`, `author`, `homepage`, `bugs`, `keywords`) but the root `package.json` only has `name`, `version`, `description`. Since the root manifest is what `npm`/GitHub's dependency graph and some tooling read for the monorepo itself, it should carry the same metadata for consistency (`"private": true` already prevents accidental publish, so adding these is safe).

Ask: add `license: "MIT"`, `repository`, `author`, `homepage`, `keywords` to root `package.json` matching `cli/package.json`.