feat: add delay before showing dialogs and enhance item card styles for better user feedback

frontend/vue-app/src/components/child/ChildView.vue

@@ -213,12 +213,16 @@ const triggerReward = (reward: RewardStatus) => {
 
   if (reward.redeeming) {
     dialogReward.value = reward
-    showCancelDialog.value = true
+    setTimeout(() => {
+      showCancelDialog.value = true
+    }, 150)
     return
   }
   if (reward.points_needed <= 0) {
     dialogReward.value = reward
-    showRewardDialog.value = true
+    setTimeout(() => {
+      showRewardDialog.value = true
+    }, 150)
   }
 }