Setting to prevent TUI scrolling when new message are streamed-in

[alexx-ftw]

Title is self-explanatory.
I like to read TUI messages while the Agent is working and streaming-in new messages below, but the current behavior of scrolling down is a bit annoying.

I searched for and didn't find any setting that controls that.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• scrollbars missing #2500: scrollbars missing

Feel free to ignore if none of these address your specific case.

[alexx-ftw]

I have implemented this feature in PR #7651. You can now disable auto-scrolling by setting tui.auto_scroll to false in your config.

[JuliaBonita]

Ideally, this feature would be intelligent enough to disable auto-scroll only when the user has intentionally scrolled up from the bottom of the window. This is how many other LLM chat interfaces work. That way, if the current scroll position is at the bottom of the stream, then the auto-scroll will stay active because it's safe to assume the user wants to see the real-time stream. But if the user has moved the scroll position to a previous point in the stream, then the assumption should be that the user wants auto-scroll to be disabled.