게시판 등록시간 수정

backend/src/main/java/com/goldenchart/util/AppTime.java

@@ -0,0 +1,16 @@
+package com.goldenchart.util;
+
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+/** 앱 기본 시간대(한국) — LocalDateTime 저장·표시용 */
+public final class AppTime {
+
+    public static final ZoneId ZONE = ZoneId.of("Asia/Seoul");
+
+    private AppTime() {}
+
+    public static LocalDateTime nowLocal() {
+        return LocalDateTime.now(ZONE);
+    }
+}