CLI 0.18.1 — The installer can run setup safely

The one-line installer can pass control to interactive mf setup without logging forwarded secrets.

Highlights

• Install and onboard in one command. curl … | sh -s -- setup remains interactive.
• No unnecessary download. An already-installed matching version is reused before the requested setup command runs.
• Correct environment examples. Installer configuration examples now put variables on the process that actually consumes them.