refactor(backend): rename OpenFlare directory to lowercase openflare

backend/openflare/plugins/server/domain/option/errs.go

@@ -0,0 +1,14 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+// Package option provides handler-level error message constants for the openflare option module.
+package option
+
+const (
+	errInvalidParams       = "无效的参数"
+	errOptionInitFailed    = "系统选项初始化失败"
+	errGeoIPProvider       = "归属方式仅支持 disabled、mmdb、ip-api、geojs、ipinfo"
+	errGeoIPIPEmpty        = "IP 不能为空"
+	errGeoIPIPInvalid      = "IP 格式无效"
+	errGeoIPLookupDisabled = "GeoIP 查询已禁用"
+)