A job of its own on ubuntu-24.04: Node 20, playwright-core 1.65.0 installed into the runner's temp directory for the run (the repository keeps no package.json), its own Chromium with the system libraries it needs, then node tests/ui/run.mjs. Nothing is built and no server started. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>