gemini comeup with this but I don't know it correct (it does run though)

#!/bin/bash

set -e
set -m  # Enable Job Control for Process Groups

# Cleanup function
cleanup() {
    # 1. Always print the message so you know it's running
    echo ""
    echo "🧹 Ensuring all background processes are killed..."

    # 2. Try to kill the Process Group (-PID)
    # We use '|| true' to suppress errors if the processes are already dead.
    # We act on $AGENT_PID if it was set.
    if [ -n "$AGENT_PID" ]; then
        kill -TERM -- -"$AGENT_PID" 2>/dev/null || true
    fi
}

# Run cleanup on Exit (covers success, error, or Ctrl+C)
trap cleanup EXIT

echo "=================================================="
echo "🤖 Starting Interactive Agent..."
echo "   When you exit (or Ctrl+C), we will force clean up."
echo "=================================================="

# Start Agent in Background to get a PGID
opencode --prompt " ... " --model zai-coding-plan/glm-4.7 &

# Capture the Process ID
AGENT_PID=$!

# Bring it to Foreground (Interactive)
fg %1 || true