CodexTools Windows desktop package (x64)

1. The recommended release artifact is "CodexTools-1.1.17-windows-x64-setup.exe"; it creates Start Menu shortcuts and an uninstall entry.
2. This folder can also be used as a portable desktop build.
3. "codextools.exe" opens a native Windows desktop window using WebView2, not a browser tab.
4. "codextools-launcher.exe" launches Codex through the Codex++ launcher.
5. Use x64 for traditional Intel/AMD PCs. Use arm64 for Windows on ARM devices.
