From 88050b808604b0aa24b056cc94e700704341bf1b Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Fri, 16 Jan 2026 17:12:27 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E6=B7=BB=E5=8A=A0=20HashSet=20import?=
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---
 backend/src/main/java/com/designhub/service/TaskService.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/backend/src/main/java/com/designhub/service/TaskService.java b/backend/src/main/java/com/designhub/service/TaskService.java
index 6b1f275..febcb5d 100644
--- a/backend/src/main/java/com/designhub/service/TaskService.java
+++ b/backend/src/main/java/com/designhub/service/TaskService.java
@@ -27,6 +27,7 @@ import java.time.LocalDateTime;
 import java.time.LocalTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;