docs: document MANAGEMENT_STATIC_PATH for management.html location

Author: hkfires

README.md

@@ -82,6 +82,8 @@ A web-based management center for CLIProxyAPI.
 
 Set `remote-management.disable-control-panel` to `true` if you prefer to host the management UI elsewhere; the server will skip downloading `management.html` and `/management.html` will return 404.
 
+You can set the `MANAGEMENT_STATIC_PATH` environment variable to choose the directory where `management.html` is stored.
+
 ### Authentication
 
 You can authenticate for Gemini, OpenAI, Claude, Qwen, and/or iFlow. All can coexist in the same `auth-dir` and will be load balanced.

README_CN.md

@@ -96,6 +96,8 @@ CLIProxyAPI 的基于 Web 的管理中心。
 
 如果希望自行托管管理页面，可在配置中将 `remote-management.disable-control-panel` 设为 `true`，服务器将停止下载 `management.html`，并让 `/management.html` 返回 404。
 
+可以通过设置环境变量 `MANAGEMENT_STATIC_PATH` 来指定 `management.html` 的存储目录。
+
 ### 身份验证
 
 您可以分别为 Gemini、OpenAI、Claude、Qwen 和 iFlow 进行身份验证，它们可同时存在于同一个 `auth-dir` 中并参与负载均衡。