Add textlint to enforce writing guide [i18nIgnore] #1

	name: Lint Japanese Documentation

	on:
	push:
	branches: [main]
	paths:
	- 'src/content/docs/ja/**'
	- '.textlintrc.ja.json'
	pull_request:
	paths:
	- 'src/content/docs/ja/**'
	- '.textlintrc.ja.json'

	# Automatically cancel in-progress actions on the same branch
	concurrency:
	group: ${{ github.workflow }}-${{ github.event_name == 'pull_request_target' && github.head_ref \|\| github.ref }}
	cancel-in-progress: true

	jobs:
	textlint:
	name: Run textlint on Japanese documentation
	runs-on: ubuntu-latest
	timeout-minutes: 15
	steps:
	- name: Checkout
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

	- name: Install Tools & Dependencies
	uses: ./.github/actions/install
	with:
	node-version: 20

	- name: Run textlint
	run: \|
	echo "::group::Running textlint on Japanese documentation"
	pnpm run lint:ja
	echo "::endgroup::"
	continue-on-error: true
	id: textlint

	- name: Report textlint results
	if: always() && steps.textlint.outcome == 'failure'
	run: \|
	echo "::error::textlint found issues in Japanese documentation. Please run 'pnpm run lint:ja' locally to see details."
	exit 1

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