tui: subagent sessions no longer show model and token usage #38495

Description

After opening the subagent view with Ctrl+O and selecting a subagent session, the TUI no
longer displays the model or consumed token count in the bottom-left status area.

This happens consistently whether the subagent is selected by mouse or keyboard. These metrics
were visible there before the beta changes.

Expected: the selected subagent session shows its model and consumed token count.

Actual: both values are absent.

Plugins

opencode-anthropic-auth

OpenCode version

1.18.4 (Homebrew)

Steps to reproduce

1. Start a session that invokes a subagent.
2. Press Ctrl+O to open the subagent view.
3. Select the subagent using the mouse or keyboard.
4. Observe that the bottom-left area does not show the model or consumed token count.

Reproduces every time.

Screenshot and/or share link

Not provided.

Operating System

macOS, Darwin 24.5.0, arm64

Terminal

tmux (TERM=tmux-256color, COLORTERM=truecolor), zsh