phase: 20.49 COMPLETE; 20.50 Flow+String minimal reps; 20.51 selfhost v0/v1 minimal (Option A/B); hv1-inline binop/unop/copy; docs + run_all + CURRENT_TASK -> 21.0

apps/macros/examples/for_foreach_macro.hako

@@ -0,0 +1,9 @@
+// for_/foreach_ normalization marker macro
+static box MacroBoxSpec {
+  name() { return "ForForeach" }
+  expand(json, ctx) {
+    // Identity in Ny child; actual transform is handled by internal-child (Rust)
+    return json
+  }
+}
+