curl -X PATCH "https://api.hitler.app/api/organizations/org-uuid-123" \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "preferences": {
      "timezone": "Europe/London"
    }
  }'

{
  "id": "org-uuid-123",
  "name": "Acme Corporation",
  "slug": "acme-corp",
  "onboardingState": "complete",
  "preferences": {
    "timezone": "Europe/London",
    "checkInTime": "09:00"
  }
}