Had a real dependency-audit gate (npm audit --audit-level=high) but no
secret scan. trufflehog's Action is Docker-based and cannot run on this
repo's existing windows-latest runner (needed for the Windows desktop
app's own browser/quality tests), so this adds it as a separate,
parallel ubuntu-latest job rather than inserting it into the Windows
job where it would break CI - the last gap for this repo to count as
fully-authored.
NuklearRabbit