//! Embeds `assets/zhao.ico` (and the package's version/description metadata)
//! into the Windows `zhao.exe`, so Explorer and the taskbar show zhao's
//! icon instead of the generic executable one. Compiled in only when the
//! build host is Windows -- release builds for it run natively on a
//! Windows runner -- so macOS/Linux builds never need the `winresource`
//! build dependency at all.