Update package. #4

	name: Build and Publish to npm

	on:
	push:
	branches:
	- main # または releaseブランチなど

	jobs:
	build-and-publish:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout source
	uses: actions/checkout@v4

	- name: Use Node.js
	uses: actions/setup-node@v4
	with:
	node-version: '20' # 任意のNodeバージョン
	registry-url: 'https://registry.npmjs.org/'

	- name: Install dependencies
	run: npm ci

	- name: Build package
	run: npm run build

	- name: Publish to npm
	run: npm publish --access public # → scopedパッケージなら必要
	env:
	NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

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