055 nested for simple

// Test: nested for loops - depth-first transform ordering
// Inner for should transform before outer for

~import std/control

const std = @import("std");

~event start {}

~proc start|zig {
}

// Outer for contains inner for
// Both should transform to Zig for loops
~start() |> for(&[_]i32{1, 2})
! each _ |> for(&[_]i32{10, 20})
    ! each _ |> _
    | done |> _
| done |> _