Open preview: platform live, free while we wire up payments

The platform is up and most services are running: VMs, volumes, networks, floating IPs, security groups, S3 buckets, managed PostgreSQL, container registry. The billing engine is running too. You can see live cost meters per resource in the console. What is not live yet: payment processing. Until that lands, sign-ups stay open and usage stays free, no credit card needed, no surprise invoice. We'll announce the cut-over with plenty of notice.