[FEATURE] Show model name in subagent/session list view

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 dispatching subagents (via the Agent tool in conversation, or via claude --bg), the agent list UI shows each agent's description and status. It would be useful to also display which model each agent is running — especially when using model overrides to dispatch cheaper models for simpler tasks.

Proposed Solution

Current behaviour: The agent list shows session name, status, and time — but not the model.

Desired behaviour: Show the model (e.g. opus, sonnet, haiku) as a tag or column in the agent list view.

Why it's useful: When optimising token spend by dispatching different models for different tasks, it's helpful to see at a glance which agents are running on which tier without having to attach to each one.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Interactive mode (TUI)

Use Case Example

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Additional Context

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