Method testChangeNodeKind

tests/test_controller.cpp:226–243

── Test: changeNodeKind changes type and undo restores ──

    // ── Test: changeNodeKind changes type and undo restores ──
    void testChangeNodeKind() {
        int idx = -1;
        for (int i = 0; i < m_doc->tree.nodes.size(); i++) {
            if (m_doc->tree.nodes[i].name == "field_u32") { idx = i; break; }
        }
        QVERIFY(idx >= 0);
        QCOMPARE(m_doc->tree.nodes[idx].kind, NodeKind::UInt32);

        m_ctrl->changeNodeKind(idx, NodeKind::Float);
        QApplication::processEvents();

        QCOMPARE(m_doc->tree.nodes[idx].kind, NodeKind::Float);

        // Undo
        m_doc->undoStack.undo();
        QApplication::processEvents();
        QCOMPARE(m_doc->tree.nodes[idx].kind, NodeKind::UInt32);
    }

    // ── Test: insertNode adds a node, removeNode removes it, undo restores ──
    void testInsertAndRemoveNode() {