chore(sync): update docs-main from upstream #140

	name: Build & Deploy Docs

	on:
	push:
	branches: [main]
	pull_request:

	# Allow the deploy job to publish to GitHub Pages.
	permissions:
	contents: read
	pages: write
	id-token: write

	# One concurrent deploy; cancel superseded runs on master.
	concurrency:
	group: pages
	cancel-in-progress: false

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v7

	- name: Setup Node.js
	uses: actions/setup-node@v7
	with:
	node-version: '22'
	cache: npm

	- name: Install dependencies
	run: npm ci

	- name: Build site (Antora)
	run: npm run antora

	- name: Test (go.php redirector map, incl. target existence)
	run: npm test

	- name: Build search index (Pagefind)
	run: npm run pagefind

	- name: Upload Pages artifact
	if: github.ref == 'refs/heads/main'
	uses: actions/upload-pages-artifact@v5
	with:
	path: public

	deploy:
	# Only main deploys; PRs validate the build only.
	if: github.ref == 'refs/heads/main'
	needs: build
	runs-on: ubuntu-latest
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	steps:
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v5

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