[FEATURE]: notification when a session stops to ask a question #13532

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

Similar issue: #7242

When running multiple sessions in parallel, there's no way to know when one of them stops to ask a question and is waiting for user input.

Problem:

Sessions can sit idle in the question dialog without the user realizing they need attention. This wastes time that could be spent making progress.

Proposed solution:

Add a system notification (or terminal bell) when a session enters the question dialog and is waiting for user input. This would be especially useful when running multiple sessions in parallel.
Benefits:

Reduces idle time when running parallel sessions
Users can context-switch to the waiting session promptly
Improves overall workflow efficiency for power users