- `host.sh` installs the pinned Bun when `/usr/local/bin/bun` reports a
different version.
- `joinTailnet` returns when `tailscale status` already succeeds, before
`install-system-daemon`.
- `guest/bake.sh` runs `brew update` before the toolchain script.
- The README says the scripts run on the Bun `host.sh` pinned when it
last ran on the host.