diff --git a/deploy/profile-scripts/system_hygiene_audit.py b/deploy/profile-scripts/system_hygiene_audit.py
index 9f8b94ec..0563b66a 100644
--- a/deploy/profile-scripts/system_hygiene_audit.py
+++ b/deploy/profile-scripts/system_hygiene_audit.py
@@ -355,8 +355,11 @@ def check_db_freshness():
     try:
         c = sqlite3.connect(os.path.join(DATA_DIR, 'mofin.db'), timeout=10)
         now = datetime.now()
-        is_trading_time = now.weekday() < 5 and 9 <= now.hour <= 16
-        # 2026-08-24 周末豁免：非交易阈值需覆盖周末休市（周五17:00→周一09:30≈64.5h），
+        # 2026-08-24 窗口收窄：10-15点才算交易时间——9:00-9:30盘前采集窗口内数据
+        # 停在上一交易日是正常的（refresh_macro_context等9:00盘前取不到实时指数不写），
+        # 10点后采集窗口已过，4h阈值抓的是真停滞
+        is_trading_time = now.weekday() < 5 and 10 <= now.hour <= 15
+        # 周末豁免：非交易阈值需覆盖周末休市（周五17:00→周一09:30≈64.5h），
         # 48h 导致周一早上必误报；真停滞会在下一交易时段被 4h 阈值抓住，不会漏
         for table, col, label in CORE_TABLES:
             try: