build-linux.sh configures and builds via CMake. build-windows.sh builds
in MSYS2/MINGW64, bundles Qt and transitive MinGW DLLs via windeployqt
plus an ldd pass, and produces an NSIS installer (installer.nsi). Ignore
the dist/ output and generated Setup.exe.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
