The Windows installer has been broken since 1.3.0: electron-builder's NSIS step
needs wine to generate the uninstaller, but the host's wine was amd64-only (no
i386 runtime -> empty syswow64 -> `error c0000135`), so electron-builder silently
wrote a 264 KB installer shell with no payload. No check caught it and the broken
exe shipped. 1.4.0 reproduced the same failure this session.
Two fixes:
1. win-builder image gains node + wine32/wine64 (+ i386 arch). dist-win-docker.sh
now runs BOTH the core cross-build and `npx electron-builder --win nsis`
inside docker (USE_SYSTEM_WINE=true -> the image's wine). The wine prefix is
initialized on first run in the shared cache volume, so syswow64/ntdll.dll
exists - the exact thing the host lacked. The host needs no mingw/wine/node.
2. packaging/verify-dist.sh: a size-floor gate for GUI artifacts (exe >= 5 MB,
deb/rpm/nsis.7z >= 10 MB). Wired into `make gui-dist` and `make gui-win-docker`
and the dist-win-docker script, so a degenerate installer fails the build
instead of reaching a Release. Verified: it rejects the 264 KB exe and passes
the healthy artifacts.
