The zwave-js settings backup guard in #120 checked `tail -c1 == "}"`, but
settings.json ends with "}\n" — so the last byte is a newline and the guard
always skipped ("not }-terminated"), producing no backup. Strip trailing
whitespace before the check so a valid, newline-terminated file is backed up
while a genuinely truncated one is still rejected.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
k.rennerandClaude Opus 4.8