SingleFile CLI 2.9.0

New features

• --browser-engine firefox runs SingleFile in Firefox through WebDriver BiDi instead of a Chromium-based browser through the Chrome DevTools Protocol. Firefox is searched in the default folders, or located with --browser-executable-path. The script runs in an isolated sandbox, so pages patching the built-in objects are saved as-is. Browser profiles (--browser-profile), proxies with authentication, --browser-server with the BiDi URL of a running Firefox, --password, screenshots and PDFs are supported. Limitations: --create-browser-profile is not available, --browser-mobile-emulation only sets the viewport size and scale factor, --emulate-media-feature and the pause of --browser-debug are ignored, the requests of service workers do not get the blocked URL patterns and extra HTTP headers, and navigator.webdriver is true in the page
• The SINGLE_FILE_BROWSER_ENGINE environment variable sets the default browser engine

Co-authored by Claude (Claude Code)