Feat/rails engine mount #692

	name: Check for Duplicate Page IDs

	on:
	pull_request:

	# 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:
	check-duplicates:
	runs-on: ubuntu-latest

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

	- name: Set up Node.js
	uses: actions/setup-node@v4
	with:
	node-version: "20.10.0"

	- name: Install dependencies
	run: npm install

	- name: Run duplicate check script
	id: check_duplicates
	run: \|
	set -o pipefail
	node ./scripts/check-for-duplicate-page-ids.js 2>&1 \| tee check-duplicates.log

	- name: Annotate PR on error
	if: failure()
	uses: actions/github-script@v7
	with:
	script: \|
	const fs = require('fs');
	const log = fs.readFileSync('check-duplicates.log', 'utf8');

	github.rest.issues.createComment({
	...context.repo,
	issue_number: context.issue.number,
	body: `## ❌ Duplicate page_id(s) found:\n\`\`\`\n${log}\n\`\`\``,
	});

	- name: Fail the job if duplicates are found
	if: failure()
	run: exit 1

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