Clarify README repository structure context #73

	name: Popup previews

	on:
	pull_request:
	workflow_dispatch:

	jobs:
	preview:
	runs-on: ubuntu-latest
	steps:
	- name: Check out repository
	uses: actions/checkout@v4

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

	- name: Install Playwright
	run: \|
	python -m pip install --upgrade pip
	pip install playwright
	playwright install --with-deps chromium

	- name: Start static server
	run: \|
	python -m http.server 8000 --bind 127.0.0.1 > /tmp/http.log 2>&1 &
	echo $! > /tmp/http-server.pid

	- name: Wait for popup HTML
	run: \|
	for i in {1..30}; do
	if curl -sSf http://127.0.0.1:8000/src/popup/index.html > /dev/null; then
	exit 0
	fi
	sleep 1
	done
	echo "Timed out waiting for static server" >&2
	cat /tmp/http.log >&2 \|\| true
	exit 1

	- name: Capture popup previews
	run: \|
	python scripts/capture_popup_preview.py --output ci-artifacts/popup-default.png

	- name: Upload previews
	uses: actions/upload-artifact@v4
	with:
	name: popup-preview
	path: ci-artifacts/

	- name: Stop static server
	if: always()
	run: \|
	if [ -f /tmp/http-server.pid ]; then
	kill $(cat /tmp/http-server.pid) \|\| true
	fi
	rm -f /tmp/http-server.pid
	cat /tmp/http.log \|\| true

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