chore: sync local updates

mengyaping-backend/storage/db_kv.go

@@ -0,0 +1,14 @@
+package storage
+
+import "time"
+
+// MonitorKV 键值配置（管理员令牌等），列名避开 MySQL 保留字 key/value
+type MonitorKV struct {
+	CfgKey    string    `gorm:"primaryKey;size:128;column:cfg_key"`
+	CfgValue  string    `gorm:"type:text;column:cfg_value"`
+	UpdatedAt time.Time `gorm:"autoUpdateTime"`
+}
+
+func (MonitorKV) TableName() string { return "monitor_kv" }
+
+const kvKeyAdminToken = "admin_token"