- Engine: same targeted-run fix as apiscp-kopia (env BACKUP_SITES/SYSTEM/PATHS/
DATABASES now override the sourced config, so `run --site` scopes correctly
instead of backing up every site).
- docs/REFERENCE.md: exhaustive reference (every command, verb, config key,
installer, automation, both GUIs, security model, recovery), plus a README
Documentation section.