Update Agent

{
  "success": true,
  "workflow_id": "123e4567-e89b-12d3-a456-426614174000",
  "is_paused": false,
  "pending_runs": 3
}

{
  "error": "Invalid input",
  "message": "Provide is_paused, name or description"
}

{
  "error": "Activation blocked",
  "message": "Configure at least one active meeting type before activating this workflow."
}

{
  "error": "Not found",
  "message": "Workflow not found"
}