Feature: Color-coded agent display in multi-agent view

Feature Request

When running multiple agents in parallel, the CLI shows:

Running 2 agents… (ctrl+o to expand)
├─ backend-dev (Implement feature A) · 23 tool uses · 66.1k tokens
└─ reviewer (Review changes) · 24 tool uses · 59.3k tokens

All agents are displayed in the same color, making it hard to quickly distinguish between them — especially when running 3+ agents of different types.

Proposal

Color-code agent names by subagent_type so each agent type has a distinct visual identity. For example:

• backend-dev → blue
• frontend-dev → green
• reviewer → yellow
• researcher → purple
• general-purpose → default

Why

When orchestrating multi-agent workflows (e.g., parallel research + review), quick visual scanning of which agent is doing what significantly improves the user experience. Color is the fastest way to parse a list.

Possible Implementation

• Assign colors based on agent name hash (automatic, no config needed)
• Or allow user configuration in settings.json (e.g., agentColors: {"backend-dev": "blue"})
• Fallback to default terminal color if not configured

Environment

• macOS, iTerm2 / Terminal.app
• Claude Code CLI with custom subagent_type agents