fix: 修复通知日志不可见问题

- notify_dispatch/agent_dispatcher 改用主logger(alert_platform)
- edge_compat 异常不再静默吞掉，输出错误日志

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/services/notify_dispatch.py

@@ -10,7 +10,6 @@
 VLM 或企微不可用时自动降级，不影响系统运行。
 """
 
-import logging
 from datetime import datetime
 from typing import Dict, List
 
@@ -22,8 +21,7 @@ from app.models import (
 from app.config import settings
 from app.services.vlm_service import get_vlm_service
 from app.services.wechat_service import get_wechat_service
-
-logger = logging.getLogger(__name__)
+from app.utils.logger import logger
 
 
 async def process_alarm_notification(alarm_data: Dict):