Have Terminal Threads display a balloon popup when waiting for user input or agent has responded as done in ACP

[Fletch153]

Body

What are you proposing?

When a terminal thread finishes, it should alert as it does when the ACP finishes or requires user input

Why does this matter?

It makes it easier to manage agents when running several at one time. This may even be a bug as it works great when using MCPs.

Are there any examples or context?

Possible approach

How it works currently on ACP, port it to Terminal threads