Status line doesn't refresh when output style changes mid-session

Description

The custom status line (statusLine.command) only picks up the new output style when opening a new Claude Code session. Changing the output style via /output-style mid-session does not trigger a status line refresh — it continues showing the old style name until the session is restarted.

Expected behavior

The status line should refresh immediately (or within a short interval) after /output-style changes the active style, reflecting the new value without requiring a new session.

Steps to reproduce

1. Configure a custom status line command in settings (statusLine.type: "command")
2. The command reads output_style.name from the JSON input
3. Start a Claude Code session — status line shows the current style (e.g., Exp)
4. Run /output-style and switch to a different style (e.g., default)
5. Observe: status line still shows the old style name

Environment

• Claude Code CLI
• macOS
• Custom statusLine.command shell script

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