curl -X POST "https://demo.api.vultlocal.com/api/v1/admin/api-keys" \
  -H "Authorization: Bearer ADMIN_JWT" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Partner Integration",
    "scopes": ["payments:read", "balance:read"],
    "expires_at": "2026-01-01T00:00:00Z"
  }'

{
  "api_key": "olive_live_xxxxxxxxxxxxx",
  "name": "Partner Integration",
  "scopes": ["payments:read", "balance:read"],
  "created_at": "2025-01-15T10:00:00Z",
  "expires_at": "2026-01-01T00:00:00Z"
}

{
  "success": false,
  "error": "Not authorized to create API keys",
  "code": "FORBIDDEN"
}