update #5

	name: Deploy to GitHub Pages

	on:
	push:
	branches:
	- main

	jobs:
	deploy:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.11'

	- name: Install dependencies
	run: pip install "jupyter-book<2" ghp-import

	- name: Build site
	run: \|
	rm -rf _build/
	jupyter-book build . 2>&1
	if [ ! -d "_build/html" ]; then
	echo "ERROR: _build/html directory not found — build likely failed"
	exit 1
	fi

	- name: Copy CNAME
	run: cp CNAME _build/html/

	- name: Deploy to GitHub Pages
	run: ghp-import -n -p -f _build/html
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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