/clear inconsistently syncs to remote control session in Claude for Desktop

Description

When using Claude Code CLI with a remote control session connected to Claude for Desktop, /clear behaves inconsistently — one clear works but a subsequent one does not, leaving stale messages visible in the Desktop app that cannot be removed.

Reproduction

1. Start a Claude Code CLI session
2. Start a remote control session (so Claude for Desktop can connect)
3. Run /clear
4. Run a command (e.g., echo hello world)
5. Run /clear again
6. Open the remote control session in Claude for Desktop

Observed behavior

• The first /clear worked: nothing before the echo hello world is visible in Desktop
• The second /clear did NOT work: the hello world output is still visible in Desktop
• Reloading with Cmd+R in Claude for Desktop does not clear it either
• The stale content persists indefinitely

Expected behavior

Both /clear commands should be reflected in the remote control session. After the second /clear, Claude for Desktop should show a clean slate.

Environment

• Claude Code CLI + Claude for Desktop remote control session
• macOS 15 (Darwin 25.3.0)