Improve hidden completed parent display

website/src/features/toolboxes/modules/TaskPlannerModule.jsx

@@ -640,7 +640,21 @@ function TaskPlannerBranch({
     if (data.hideCompleted && task.checked) {
       if (!hasVisibleDescendants(task.id)) return null;
       return (
-        <li className="task-planner-hidden-parent-children" key={`${task.id}:visible-children`}>
+        <li className="task-planner-hidden-parent" key={`${task.id}:visible-children`}>
+          <div className="task-planner-hidden-parent-line">
+            <input
+              type="checkbox"
+              checked={task.checked}
+              onChange={(event) => onUpdateTask(task.id, (current) => ({
+                ...current,
+                checked: event.target.checked,
+                checkedAt: event.target.checked ? Date.now() : 0
+              }))}
+              aria-label={`${textContent.uncheckTitle || "Marquer non effectué"} ${task.title}`}
+            />
+            <span title={task.title}>{task.title}</span>
+            <small>{getTaskTypeLabel(task.type, textContent)}</small>
+          </div>
           <ul className="task-planner-list task-planner-child-list">{nestedBranch}</ul>
         </li>
       );