// #23 legal control — same leaf `foo` in DISTINCT packages of one flat
// bundle is legal (the dup key is (name, mod), not bare name). Mirrors a
// driver-emitted *.combined.ww. Must compile clean + byte-identical.
package aa;
export fn foo() i32 = { return 1; };

package bb;
export fn foo() i32 = { return 2; };

package main;
import aa;
import bb;
export fn main() i32 = { return aa.foo() + bb.foo(); };