feat: webhook默认地址写入config.yaml，数据库无值时自动回退

main.go

@@ -89,7 +89,7 @@ func main() {
 	appHandler := handler.NewAppHandler(appService)
 	musicHandler := handler.NewMusicHandler(musicService)
 	dashboardHandler := handler.NewDashboardHandler(db.DB)
-	customerHandler := handler.NewCustomerHandler(db.DB)
+	customerHandler := handler.NewCustomerHandler(db.DB, cfg)
 	accessLogHandler := handler.NewAccessLogHandler(db.DB)
 	configHandler := handler.NewConfigHandler(db.DB)