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

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

@@ -563,7 +563,9 @@ const triggerTask = (task: Task) => {
     showPendingRewardDialog.value = true
     return
   }
-  showConfirm.value = true
+  setTimeout(() => {
+    showConfirm.value = true
+  }, 150)
 }
 
 async function cancelRewardById(rewardId: string) {
@@ -629,7 +631,9 @@ const triggerReward = (reward: RewardStatus) => {
     return
   }
   selectedReward.value = reward
-  showRewardConfirm.value = true
+  setTimeout(() => {
+    showRewardConfirm.value = true
+  }, 150)
 }
 
 const confirmTriggerReward = async () => {