Advance app runtime ownership and modernization docs

src/node_dialog_cloud.h

@@ -6,6 +6,8 @@
 #include "node_text_input.h"
 
 #include <vector>
+#include <stop_token>
+#include <thread>
 
 class NodeDialogCloudItem : public NodeBorder
 {
@@ -46,8 +48,11 @@ public:
     void init_controls();
     virtual void loaded() override;
     virtual void removed(Node* parent) override;
-    void load_thumbs_thread();
+    void load_thumbs_thread(std::stop_token stop);
     NodeText* create_loading_status_text();
     bool load_cloud_file_list(CURL* curl, std::string& response, NodeText& status_text);
     std::vector<NodeDialogCloudItem*> create_cloud_file_items(const std::vector<std::string>& names);
+
+private:
+    std::jthread load_thumbs_worker_;
 };