MANUAL RUN: bring a Hetzner box up and down once (from #345) #452

Split out of #345. The tests for the Hetzner box target landed there. A live run needs your Hetzner project token and costs a few cents (a cpx12 plus a 10 GB Volume, billed by the hour), so it's yours to run.

Steps (from a throwaway app with targets.box: { provider: "hetzner" } and no native crates)

• rustybuns login hetzner (or store a Hetzner token in a codeSplitters repo's Deploy panel).
• rustybuns plan --stage hetzner-test, then rustybuns deploy --stage hetzner-test. Expect an http://<ip>:3000 URL that answers /health.
• Deploy again: plan shows an update to the same server, not a create (Alchemy state, SSH key included, carries over).
• rustybuns destroy --stage hetzner-test --yes, then check the Hetzner console shows no server or Volume left.
• Hosted path: note the run time against the 13-minute budget, and that the token never shows in the log; then delete the stored key.

Known limit: a box with native/ crates that need the Docker cross-build deploys from the desktop, not the hosted container.

🤖 Generated with Claude Code