- Fix 'cannot switch to a different thread' errors in inspect_browser
- Implement proper async/sync separation for Nova Act calls
- Add thread-safe wrappers for page.url, page.title(), and page.screenshot()
- Maintain backward compatibility with existing API

This patch resolves threading conflicts when using inspect_browser with
complex sites or when capturing screenshots.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>