[FEATURE]: "Are you sure you want to close Opencode? There are 7 active tasks running!" #27791

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

I catch myself several times pressing CTRL+W accidentially - and Opencode (Desktop) disappears IMMEDIATELY without any warning and of course stopping all running tasks - That leads me to open it again, go into every of my projects and check, which conversations I need to restart manually. So several minutes are wasted until everything is running like before.

Same happens with ALT+F4 or pressing on the "X" of the window.

I am not a fan of unnecessary questions, but if one little click or one little keyboard button makes this much damage, then I would love to have this simple message like "Are you sure you want to close Opencode? There are 7 active tasks running!" with yes / no

For people who don't like something like this, there could be a simple setting that enables this or not.