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/tests/mir-nested-branch/main.hako

@@ -0,0 +1,20 @@
+// mir-nested-branch - nested branches with returns
+
+static box Main {
+    main() {
+        if 1 < 2 {
+            if 3 < 4 {
+                return 1
+            } else {
+                return 2
+            }
+        } else {
+            if 5 < 6 {
+                return 3
+            } else {
+                return 4
+            }
+        }
+    }
+}
+