feat(tasks): deepening a task into a note keeps the task, linked to the note's first checkbox

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/features/triage/TasksView.tsx

@@ -666,8 +666,11 @@ export const TasksView: React.FC<TasksViewProps> = ({
     triggerHaptic(20);
     const updated = await api.triageAction(task.id, 'keep', { convertTo: 'document' });
     onRefreshStats();
-    if (updated.convertedRefId) {
-      onOpenDocument(updated.convertedRefId);
+    // The task stays in its list, linked to the note's first checkbox (docId); open that note
+    setTasks((prev) => prev.map((t) => (t.id === updated.id ? updated : t)));
+    const docId = updated.docId || (updated.convertedType === 'document' ? updated.convertedRefId : '');
+    if (docId) {
+      onOpenDocument(docId);
     } else {
       loadData();
     }