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

json_test_simple.hako

@@ -0,0 +1,29 @@
+using "apps/lib/json_native/core/node.hako" as JsonNode
+using "apps/lib/json_native/utils/string.hako" as StringUtils
+
+// シンプルなJSONテスト
+static box SimpleTest {
+    main() {
+        print("🧪 Simple JSON Test")
+
+        // 基本的なテスト
+        local json_null = JsonNode.parse("null")
+        print("null parse: " + json_null.stringify())
+
+        local json_bool = JsonNode.parse("true")
+        print("true parse: " + json_bool.stringify())
+
+        local json_int = JsonNode.parse("42")
+        print("integer parse: " + json_int.stringify())
+
+        local json_str = JsonNode.parse("\"hello\"")
+        print("string parse: " + json_str.stringify())
+
+        // StringUtils テスト
+        local trimmed = StringUtils.trim("  hello world  ")
+        print("trimmed: '" + trimmed + "'")
+
+        print("✅ Simple test complete")
+        return 0
+    }
+}