Refactor and enhance various components and tests

- Remove OverrideEditModal.spec.ts test file.
- Update ParentPinSetup.vue to handle Enter key for code and PIN inputs.
- Modify ChildEditView.vue to add maxlength for age input.
- Enhance ChildView.vue with reward confirmation and cancellation dialogs.
- Update ParentView.vue to handle pending rewards and confirm edits.
- Revise PendingRewardDialog.vue to accept a dynamic message prop.
- Expand ChildView.spec.ts to cover reward dialog interactions.
- Add tests for ParentView.vue to validate pending reward handling.
- Update UserProfile.vue to simplify button styles.
- Adjust RewardView.vue to improve delete confirmation handling.
- Modify ChildrenListView.vue to clarify child creation instructions.
- Refactor EntityEditForm.vue to improve input handling and focus management.
- Enhance ItemList.vue to support item selection.
- Update LoginButton.vue to focus PIN input on error.
- Change ScrollingList.vue empty state color for better visibility.
- Remove capture attribute from ImagePicker.vue file input.
- Update router/index.ts to redirect logged-in users from auth routes.
- Add authGuard.spec.ts to test router authentication logic.

frontend/vue-app/src/components/shared/ItemList.vue

@@ -90,6 +90,14 @@ onMounted(fetchItems)
 watch(() => props.fetchUrl, fetchItems)
 
 const handleClicked = (item: any) => {
+  if (props.selectable) {
+    const idx = selectedItems.value.indexOf(item.id)
+    if (idx === -1) {
+      selectedItems.value.push(item.id)
+    } else {
+      selectedItems.value.splice(idx, 1)
+    }
+  }
   emit('clicked', item)
   props.onClicked?.(item)
 }