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/hang_macro.hako

@@ -0,0 +1,12 @@
+// hang_macro.hako
+// Macro that never returns (infinite loop) to test timeout handling.
+
+static box MacroBoxSpec {
+  expand(json) {
+    // Busy loop forever
+    loop(true) {
+      // do nothing
+    }
+    return json
+  }
+}