Method get_node

src/python/lfs/py_scene.cpp:650–659

    }

    std::optional<PySceneNode> PyScene::get_node(const std::string& name) {
        // Use the const lookup + const_cast so we don't blow the combined-model
        // cache on every read. Actual mutations go through SceneNode property
        // setters whose callbacks trigger Scene::notifyMutation, which still
        // invalidates the cache — same pattern as get_nodes/get_visible_nodes.
        const auto* node = scene_->getNode(name);
        if (!node)
            return std::nullopt;
        return PySceneNode(const_cast<core::SceneNode*>(node), scene_);
    }

    std::vector<PySceneNode> PyScene::get_nodes() {
        std::vector<PySceneNode> result;