From e042c9ee100e556e34d84d740438416491af20e0 Mon Sep 17 00:00:00 2001
From: happybell80 <happybell80@naver.com>
Date: Thu, 28 Aug 2025 01:20:56 +0900
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---
 ...rontend_backend_preferences_API_연동_완료.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/troubleshooting/250827_frontend_backend_preferences_API_연동_완료.md b/troubleshooting/250827_frontend_backend_preferences_API_연동_완료.md
index df1ee95..196d5b7 100644
--- a/troubleshooting/250827_frontend_backend_preferences_API_연동_완료.md
+++ b/troubleshooting/250827_frontend_backend_preferences_API_연동_완료.md
@@ -294,11 +294,24 @@ async def proxy_preferences(
 ### 최종 상태 (23:30)
 - GET /api/preferences/{user_id}: 200 OK ✅
 - PUT /api/preferences/{user_id}: 200 OK ✅
+- 브리핑 시간 표시: "09:00" 정상 표시 ✅
 
 ---
 
 ## 10. PUT 500 에러 해결 과정 (22:45 ~ 23:30)
 
+### 추가 해결: 브리핑 시간 표시 문제 (01:10)
+- **문제**: DB `09:00:00` → Frontend `00:00` 표시
+- **원인**: TIME 형식 파싱 오류
+- **해결**: `activity-panel.tsx` line 104
+```javascript
+// Backend에서 "09:00:00" 반환 → Frontend에서 "09:00"로 변환
+scheduleTime: data.briefing_time ? data.briefing_time.substring(0, 5) : '09:00'
+```
+- **결과**: 정상 표시 완료 ✅
+
+## 11. 최종 해결 내역
+
 ### 문제 1: 존재하지 않는 컬럼 참조
 - **원인**: INSERT/UPDATE 쿼리가 DB에 없는 컬럼 참조
 - **해결**: schedule_type, schedule_days, include_* 컬럼 제거