Method testInsertChildIntoStruct

tests/test_context_menu.cpp:250–262

    // ── Insert child into struct ──

    void testInsertChildIntoStruct() {
        uint64_t rootId = m_doc->tree.nodes[0].id;
        int before = countNodes();

        m_ctrl->insertNode(rootId, 0, NodeKind::Hex64, "childField");
        QApplication::processEvents();

        QCOMPARE(countNodes(), before + 1);
        int idx = findNode("childField");
        QVERIFY(idx >= 0);
        QCOMPARE(m_doc->tree.nodes[idx].parentId, rootId);
        QCOMPARE(m_doc->tree.nodes[idx].offset, 0);
    }

    // ── Remove node then undo restores it ──