v0.3.4

Fixed- nlm login hang on fresh install - Optimized Chrome port availability scanning (using socket.bind instead of httpx.get) to avoid 20+ second timeouts on systems that drop network packets. Thanks to @pjeby for the diagnosis (closes #52)\n- Chrome "Restore Pages" Warning - nlm login and headless authentication now perform a graceful shutdown of Chrome via CDP (Browser.close) rather than abruptly killing the process, resolving crashes on next browser start. Again, great work by @pjeby (fixes #52)