[优化] 重构数据库迁移逻辑，添加版本管理和验证功能

openflare_server/model/migrate/v13.go

@@ -0,0 +1,27 @@
+package migrate
+
+import "gorm.io/gorm"
+
+func init() {
+	Register(V13())
+}
+
+func V13() Migration {
+	return Migration{
+		FromVersion: 12,
+		ToVersion:   13,
+		Migrate:     migrateV13,
+		Validate:    validateV13,
+	}
+}
+
+func migrateV13(ctx Context, db *gorm.DB, backend string) error {
+	if err := ctx.ApplyCurrentSchema(db, backend); err != nil {
+		return err
+	}
+	return ctx.EnsureDefaultWAFRuleGroup(db)
+}
+
+func validateV13(ctx Context, db *gorm.DB, backend string) error {
+	return ctx.ValidateDatabaseSchemaVersion(db, backend, 13)
+}