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/async-nowait-basic/main.hako

@@ -0,0 +1,16 @@
+// @env NYASH_AWAIT_MAX_MS=5000
+// Simple nowait/await test under Interpreter
+
+static box Main {
+    main() {
+        // spawn two async computations
+        nowait fa = 10 + 20
+        nowait fb = 1 + 2
+
+        // wait and combine
+        a = await fa
+        b = await fb
+        return a + b   // 33
+    }
+}
+