VS Code extension shows full subagent transcript inline; no setting to collapse it (CLI/desktop show a summary)

Summary

In the VS Code extension, subagents launched via the Agent/Task tool render their full internal transcript inline in the main chat panel — every Bash command, raw stdout, tool input, and intermediate step. In the terminal CLI and the desktop app, the same subagent shows only a collapsed summary line plus the final result.

There appears to be no setting to collapse or hide subagent activity in the VS Code panel, which makes the main conversation very noisy when running multiple background agents.

Environment

• Claude Code CLI: 2.1.197
• VS Code extension: anthropic.claude-code 2.1.207 (linux-x64)
• Host: Linux (VS Code Remote-SSH)

Steps to reproduce

1. In the VS Code extension, ask Claude to launch 2–3 background subagents (Agent/Task tool).
2. Observe the main chat panel: each subagent's Bash calls and their raw output are rendered expanded inline.
3. Run the identical prompt in the terminal CLI or desktop app: the subagent shows as a single collapsed summary line + final result.

Expected

Subagent internal activity should default to a collapsed/summary view in the VS Code panel (matching CLI/desktop), or there should be a setting to control it.

What I tried

• Reviewed the extension's 13 contributed claudeCode.* settings — none control tool/subagent output verbosity.
• Set "viewMode": "focus" in ~/.claude/settings.json (which collapses tool detail to one-line summaries elsewhere) — no effect on the VS Code panel's subagent rendering, even after a window reload.
• "verbose": false is already the default and doesn't govern this.
• The VS Code docs page notes background-task "visibility is limited compared to the CLI", but there's no documented knob to reduce it.

Request

Either (a) a setting — e.g. claudeCode.collapseSubagentActivity or an extension of viewMode that the native panel honors — to collapse subagent internal steps to a summary, or (b) make the VS Code panel default to the collapsed summary view that CLI/desktop already use.