New JSON editor usability & fixed dimensions

I’m finding the new JSON editor in the Agent configuration UI very difficult to use compared to the previous version. Specifically:

1. Fixed dimensions. The editor window is tiny and lacks a resize handle, making it nearly impossible to view complex JSON structures without constant scrolling.
2. UI overlap. The context menu is half-hidden, which makes editing and navigation a struggle.

Could we please get the ability to manually resize the editor window or have it expand to fit the container? A "fullscreen" or "expand" toggle would also be a massive improvement for readability.