Show diffs in both terminal and connected IDE simultaneously

Feature request

When an IDE (e.g. IntelliJ) is connected via /ide, diffs are shown in the IDE. It would be useful to show diffs both in the terminal (inline) and in the connected IDE at the same time, so you can review in whichever is more convenient without toggling.

Current behavior

• Diffs appear in the connected IDE when one is active
• Shift+Tab toggles between IDE and terminal display

Desired behavior

• A setting (e.g. diffDisplay: "both") that shows diffs inline in the terminal AND sends them to the connected IDE simultaneously