Set up uv for dependency management and add PR preview workflow #4

	name: PR Preview

	# Build the book on pull requests for preview
	on:
	pull_request:
	branches:
	- main
	- master

	jobs:
	build-preview:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	# Install uv for faster dependency management
	- name: Install uv
	uses: astral-sh/setup-uv@v4
	with:
	enable-cache: true

	# Set up Python using uv
	- name: Set up Python
	run: uv python install 3.11

	# Install dependencies using uv
	- name: Install dependencies
	run: uv sync

	# Cache executed notebooks between runs
	- name: Cache executed notebooks
	uses: actions/cache@v4
	with:
	path: _build/.jupyter_cache
	key: jupyter-book-cache-${{ hashFiles('uv.lock') }}

	# Build the book
	- name: Build the book
	run: \|
	uv run jupyter-book build .

	# Upload the book's HTML as an artifact
	- name: Upload book artifact
	uses: actions/upload-artifact@v4
	with:
	name: book-html-${{ github.event.pull_request.number }}
	path: "_build/html"
	retention-days: 7

	# Post comment with artifact link
	- name: Comment PR
	uses: actions/github-script@v7
	if: github.event_name == 'pull_request'
	with:
	script: \|
	const artifactUrl = `https://github.com/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}`;
	github.rest.issues.createComment({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: `📚 Book preview build completed! [Download the artifact](${artifactUrl}) to view the HTML locally.`
	})

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