[FEATURE] Display agent names in window/tab titles

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

When running background agents with custom names, it would be helpful to see the agent name in the window or tab title.

Description:

When running background agents with custom names, it would be helpful to see the agent name in the window or tab title.

Use Case:

• User spawns an agent to work on a specific task (e.g., "Chronos" for timeout analysis)
• Multiple agents or sessions may be running
• Window/tab title could show: Claude Code - Chronos or Chronos - VSW-5353 Timeout Tuning

Benefits:

• Easy identification of which agent is working in which window/tab
• Better task switching when managing multiple concurrent agents
• Improved context awareness at a glance

Proposed Solution

When a background agent is launched with a name, update the window title

• Format: Claude Code - [Agent Name] or [Agent Name] - [Task Description]
• Revert to default title when agent completes or user continues working

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

Use Case:

• User spawns an agent to work on a specific task (e.g., "Chronos" for timeout analysis)
• Multiple agents or sessions may be running
• Window/tab title could show: Claude Code - Chronos or Chronos

Additional Context

_No response_