curl --request POST \
  --url 'https://zeus-api.agentspro.cn/node/bind?user_id=user_123' \
  --header 'Content-Type: application/json' \
  --data '{
    "session_id": "sess_456",
    "node_id": "node_abc"
  }'

{
  "success": true,
  "message": "Session bound to Chrome Extension",
  "binding": {
    "session_id": "sess_456",
    "user_id": "user_123",
    "node_id": "node_abc"
  }
}