The systemd preview printed "daemon-reload && enable --now sower" while the
script runs daemon-reload, enable and restart; the launchd preview printed only
the load step and omitted the unload it runs first. A dry run is worth exactly
its fidelity to the real sequence, so print the steps as they will run.
Installing sower meant grabbing a tarball and wiring the service up by hand,
and the packaged unit was too fragile for something a resolver depends on
(on-failure restart after 1min, no memory limit).
Add install.sh: detects the platform and init system, installs or upgrades
the binary atomically, keeps an existing config, verifies the release
SHA256SUMS unless explicitly opted out, and registers the service on systemd,
OpenWrt procd or macOS launchd. Every network call carries an explicit
timeout, the OpenWrt init script ships in Linux tarballs, the release
workflow generates SHA256SUMS, the README documents the installer, and
make test syntax-checks the scripts.
wweir