Foreground Bash command cannot be cancelled with Escape

Description

A foreground Bash command running via SSH with an embedded for-loop cannot be cancelled. Pressing Escape does not stop the command, and /tasks shows no running tasks.

Steps to Reproduce

1. Run a Bash command in Claude Code that SSHs to a remote server with an embedded loop:

``bash
ssh remote-server 'for i in 1 2 3; do curl -s -X POST http://localhost:3333/queue -H "Content-Type: application/json" -d "{\"workflowId\": \"xxx\"}"; done'
``

1. While the command is running (shows "Running..." in UI), press Escape
2. Run /tasks command

Expected Behavior

• Pressing Escape should cancel the running foreground command
• Or the command should appear in /tasks so it can be killed

Actual Behavior

• Escape does not cancel the command
• /tasks shows "No tasks currently running"
• The command continues running indefinitely
• User is stuck with no way to cancel from within Claude Code

Workaround

Kill the process on the remote server directly:

ssh remote-server 'pkill -f "curl.*localhost:3333"'

Environment

• macOS (Darwin 25.0.0)
• Claude Code CLI

Screenshots

The UI shows the Bash command with "Running..." but /tasks reports no background tasks.

Analysis

The issue may be that:

1. SSH creates a nested shell on the remote server
2. The for-loop runs inside that remote shell
3. Escape/interrupt signal doesn't propagate through the SSH connection to the nested process
4. Since it's not a "background" task, it doesn't appear in /tasks

This leaves users with no way to cancel the command from within Claude Code.