diff --git a/apps/api/src/services/decision_manager.py b/apps/api/src/services/decision_manager.py
index 319981b2..4ae43b85 100644
--- a/apps/api/src/services/decision_manager.py
+++ b/apps/api/src/services/decision_manager.py
@@ -232,6 +232,16 @@ async def _push_decision_to_telegram(
         _notification_type = getattr(incident, "notification_type", "") or (_notif_type.value if _notif_type else "")
         _alertname = incident.signals[0].labels.get("alertname", "MetaSystemAlert") if incident.signals else "MetaSystemAlert"
 
+        # 2026-04-12 ogt: classify_alert_early() 設的 notification_type 優先於 classify_notification()
+        # 場景：backup/info 告警被 classify_notification() 誤判為 TYPE-3（confidence=0, 無 auto_executed）
+        # 規則：incident.notification_type 明確為 TYPE-1 → 強制走 info 路徑
+        if _notification_type == "TYPE-1":
+            _notif_type = NotificationType.TYPE_1
+        elif _notification_type == "TYPE-4D":
+            _notif_type = NotificationType.TYPE_4_DRIFT
+        elif _notification_type == "TYPE-8M":
+            _notif_type = NotificationType.TYPE_8M
+
         if _notif_type == NotificationType.TYPE_1:
             # 純資訊通知 — 無按鈕
             tg_result = await gateway.send_info_notification(