Clickhousectl Cloud Deploy

It handles CLI authentication with API keys, service provisioning, schema migration from local table definitions, and setting up a scoped application user instead of using the admin default account. The step-by-step structure is methodical, maybe even careful to a fault, but if you're moving from local dev to managed ClickHouse for the first time it covers the gaps between "I have SQL files" and "my app is talking to a cloud instance." One nice touch is that it tells you to run the login command in a separate terminal to keep secrets out of the chat.