curl -X PUT https://api.companyflow.com/roles/550e8400-e29b-41d4-a716-446655440000 \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Lead Developer",
    "description": "Lead software development position"
  }'

{
  "success": true,
  "data": {
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "company_id": "123e4567-e89b-12d3-a456-426614174000",
    "name": "Lead Developer",
    "description": "Lead software development position",
    "is_system_role": false,
    "permissions_cache": ["employees:read", "employees:write"],
    "created_at": "2024-01-15T10:30:00Z",
    "updated_at": "2024-01-15T15:45:00Z"
  }
}