Sites are missing titles

Not sure if this has always been the case, but it would be a great QoL improvement to display the currently open chapter in the window title. Right now, the title bar is empty and only shows the full URL, which makes it harder to identify the tab or window at a glance.

<img width="957" height="82" alt="Image" src="https://github.com/user-attachments/assets/7ee2e226-65d8-4241-9f66-5b87c2d86d4a" />