Inject Message into Running Agent

curl --request POST \
  --url https://your-domain.com/api/chat/inject \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "conversation_id": "conv_123abc",
  "content": "Actually, also search for Paris hotels"
}
'

{
  "status": "<string>",
  "inject_id": "<string>"
}