setup-cloud-companion

# Set up the cloud companion The cloud companion is a small always-on VM the user owns. It receives the Mac's data repo over git-smart-HTTP, serves the phone over HTTPS from anywhere, and relays live session traffic. Setting one up means: provision a VM → point a hostname at it → wait for first boot → claim it → verify sync. You do **not** re-implement that sequence. A resumable job on this machine owns it, and you drive that job over REST — the same endpoints the Settings → Cloud Companion wizard uses. The job survives your session ending, a server restart, and a long poll; your role is to explain, collect choices, answer the job's questions, and narrate progress. **API base:** `$WALNUT_SERVER_URL` (set by the server for its own sessions; falls back to `http://localhost:3456`). Use `${WALNUT_SERVER_URL:-http://localhost:3456}` in every curl so a sandbox or demo server on another port talks to ITSELF, never to the user's real server. ## 0. Money and consent — before anything billable Provisioning creates **real, recurring, billed cloud resources in the user's own account**. Say so plainly, in this order, and get an explicit yes before you POST anything: 1. What gets created: one small VM with a public IP, an encrypted disk that is *kept* if the VM is terminated, daily disk snapshots, and (on AWS) a CloudFormation stack that owns them. 2. What it costs per month — read the real number from `costHint` in step 1 below, do not quote a figure from memory. 3. That th...