Chrome stopped the background worker about six minutes after a site's request even with the approval window open, and the approval and the site's waiting request went with it. While any approval is pending, the worker now calls runtime.getPlatformInfo() every 20 seconds; Chrome counts each extension call as activity. The timer is the worker's own, so a minimized window does not slow it, and it stops itself once nothing is pending. tests/e2e/slowApproval.js, run by make test-e2e, leaves a transaction and a signature approval open for seven minutes in minimized windows and requires the site to receive both results. It drives Chromium over the DevTools pipe without Playwright, because Playwright keeps DevTools attached to the worker and Chrome then never stops it. Model: opus-5-5