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

local_tests/debug_wasm_generation.hako

@@ -0,0 +1,8 @@
+// 🧪 最も単純なWASM生成テスト
+// 変数操作も避けて、純粋な計算のみ
+
+static box Main {
+    main() {
+        return "成功"
+    }
+}