Offer to build the base QCOW2, download the ISO, run npm ci and install
Chromium (from the npmmirror mirror by default). Let Playwright locate its
own Chromium so macOS works.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Move the Node.js script and its dependencies into nodejs/ and let
download-images.sh call it for the image architecture.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>