CHW-1208 DefaultOrgProtected

the default org cannot be purged; it is load-bearing for single-tenant deployments

Default message: the default org cannot be purged; it is load-bearing for single-tenant deployments
HTTP status: 403 (client)

Problem. The admin purge endpoint refused to delete the default org. Cause. The default org (tenancy.DefaultOrgID) is load-bearing in single-tenant deployments and referenced by schema defaults; deleting it would corrupt the instance. Fix. Do not attempt to purge the default org; migrate data out and redeploy if a clean slate is required. HTTP 403.