NetExperts Support 1.5.4.1 cosmetic release over released 1.5.3. Compact shared light/dark controls and dialogs. Installation defaults, recipient approval, password authentication and authenticated relay fallback are preserved. Public/runtime version and MSI ProductVersion are 1.5.4.1. Cargo and update feed family remain 1.5.4; Flutter and macOS bundle are 1.5.4+72. Current-version updater parsing accepts the fourth numeric runtime component; remote feed schema and URL, edition, architecture and hash validation stay strict. Retained toolchains and caches were used; this is not a clean-room reproducibility claim.
