Windows

Validated via zig build-lib --target <t> -fno-emit-bin plus the native test suite on x86_64-windows:

• x86-windows — compiles clean.
• x86_64-windows — compiles clean; full zig build test green.
• aarch64-windows — compiles clean.

No usize-to-u64 assumptions, no POSIX-only calls on any path. Examples run as .exe via zig build run-<name>.

Related: Feature Matrix.