One command replaces the clone-era checklist: creates photos/ and
data/, writes a default config.toml, prompts for the four credentials
with hidden input (appended to a 0600 .env, only the missing ones,
values never echoed), and offers the one-time Chromium download.
Re-runs report status and fill gaps; without a TTY it reports instead
of hanging. Groundwork for any future publishing path — PyPI or a
bundled app both need exactly this wizard.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>