Update Settings (organization-scoped)

curl -X PUT "https://edushade.com/api/v1/orgadmin/organizations/497f6eca-6276-4993-bfeb-53cbbbba6f08/settings" \
  -H "Content-Type: application/json" \
  -d '{
    "accent_color": "#10B981",
    "contact_email": "contact@edushade.com",
    "contact_phone": "+1-555-0123",
    "currency": "USD",
    "description": "A comprehensive learning management system for modern education",
    "footer_text": "© 2025 Edushade. All rights reserved.",
    "language": "en",
    "logo": {
      "dark_logo": "https://example.com/dark-logo.png",
      "favicon": "https://example.com/favicon.ico",
      "light_logo": "https://example.com/light-logo.png"
    },
    "organization_name": "Edushade Learning Platform",
    "primary_color": "#3B82F6",
    "secondary_color": "#8B5CF6",
    "social_links": {
      "facebook": "https://facebook.com/edushade",
      "instagram": "https://instagram.com/edushade",
      "linkedin": "https://linkedin.com/company/edushade",
      "twitter": "https://twitter.com/edushade",
      "youtube": "https://youtube.com/edushade"
    },
    "theme": "light",
    "timezone": "America/New_York",
    "website": "https://edushade.com"
  }'