Previously the review screen only offered Confirm/Abort, so a typo or
wrong-disk choice meant aborting the whole run and starting over (or
hand-editing /tmp/nomarchy-install.state.sh). On --resume the situation
was worse: every prompt re-runs (each short-circuits when its var is
set), the user lands on a review they can't change.
review_configuration() now offers Continue / Edit a field / Abort. Edit
opens a multi-select of every saved field; chosen fields clear and the
next loop iteration in main() re-prompts only those. The LUKS passphrase
short-circuits when already set, so editing other fields doesn't
re-prompt for it.
Net flow change:
- Fresh install: same prompts, then review with Edit option (typo fixes
without restarting).
- --resume: state loads, every prompt skips (vars set), lands straight on
review — exactly what the roadmap entry called for.
Verified via `bash -n`. Live VM dry-run not exercised in this session.