33e87d5930
disposeBrowserHandle awaited Puppeteer's browser.close() for the headless kind with no timeout. browser.close() resolves only once Chromium fully exits, so a wedged process (a Windows failure mode) left releaseTab stuck in the "Closing tab" phase forever. Cap the close at 5s and force-kill the Chromium process tree on timeout so the tool call always releases. Fixes #5260