docs: restore preview environment for non-main branches #488

	name: Deploy to GitHub Pages

	on:
	push:
	branches:
	- main
	- docs-test
	paths:
	- 'docs/**'
	- '.github/workflows/publish-docs.yaml'
	pull_request:
	branches:
	- main
	paths:
	- 'docs/**'
	- '.github/workflows/publish-docs.yaml'

	permissions:
	contents: read
	pages: write
	id-token: write

	concurrency:
	group: "pages"
	cancel-in-progress: false

	jobs:
	# Build job
	build:
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: docs
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-node@v3
	with:
	node-version: 18
	cache: npm
	cache-dependency-path: docs/package-lock.json

	- name: Install dependencies
	run: npm ci

	- name: Test build
	run: \|
	npm run build
	# Basic tests to ensure critical files exist
	test -f build/index.html \|\| exit 1
	test -d build/docs \|\| exit 1
	test -d build/assets \|\| exit 1

	- name: Upload pages artifact
	uses: actions/upload-artifact@v4
	with:
	name: github-pages
	path: docs/build

	# Deploy job
	deploy:
	needs: build
	runs-on: ubuntu-latest
	environment:
	name: ${{ github.ref == 'refs/heads/main' && 'github-pages' \|\| 'preview' }}
	url: ${{ steps.deployment.outputs.page_url }}
	steps:
	- name: Download build
	uses: actions/download-artifact@v4
	with:
	name: github-pages
	path: build

	- name: Setup Pages
	uses: actions/configure-pages@v3

	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v3

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