[FEATURE] Have different icons in terminal tabs for different states

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

I am often rotating between multiple terminals to work on different sections of my projects - usually having multiple planning agents and one agent acting on plans, but currently the only status indicators are "Working" (dots) or "Awaiting Input" (Green box)
<img width="299" height="46" alt="Image" src="https://github.com/user-attachments/assets/78ebb562-40e7-46a4-9eb4-314f5074ac1b" />
The problem happens when I have many tabs cycling between "Plan Approval" and "Work Complete", and trying to track which terminal is in which state.

Example screenshot
<img width="1252" height="40" alt="Image" src="https://github.com/user-attachments/assets/27df84ff-6665-4a76-85ea-617a15b18066" />

In this screenshot I currently have tabs open in various states:

• Claude has written up a plan and is ready to execute. Would you like to proceed?
• Do you want to make this edit to [file]?
• Work completed - awaiting next instruction
• Clarification question about plan actively being created

However, they all show the same icon, so there's no easy way to determine which needs help to finish their plan

Proposed Solution

I'd like there to be a different icon shown in the terminal tab preview for when a Plan is awaiting approval as opposed to when the terminal has completed their tasks, e.g. an orange box for awaiting approval to indicate that it's paused and requires attention.

Alternative Solutions

The only way I can track this currently is having two terminal windows open and swapping tabs from one to the other when the plan is accepted and being worked on.

Priority

Low - Nice to have

Feature Category

Interactive mode (TUI)

Use Case Example

Example screenshot
<img width="1252" height="40" alt="Image" src="https://github.com/user-attachments/assets/27df84ff-6665-4a76-85ea-617a15b18066" />

In this screenshot I currently have tabs open in various states:

• Claude has written up a plan and is ready to execute. Would you like to proceed?
• Do you want to make this edit to [file]?
• Work completed - awaiting next instruction
• Clarification question about plan actively being created

However, they all show the same icon, so there's no easy way to determine which needs help to finish their plan

Additional Context

_No response_