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

tests/development/test_simple_constructor.hako

@@ -0,0 +1,14 @@
+
+// シンプルなコンストラクタテスト
+box TestBox {
+    init { value }
+    
+    constructor() {
+        me.value = "default"
+    }
+}
+
+local t
+t = new TestBox()
+print("Value: " + t.value)
+