docs: add opencli doctor hint after token setup

README.md

@@ -72,6 +72,12 @@ And, so that `opencli` commands can use it directly in the terminal, export it i
 export PLAYWRIGHT_MCP_EXTENSION_TOKEN="<your-token-here>"
 ```
 
+After configuring, run `opencli doctor` to verify your token is correctly set up across all locations:
+
+```bash
+opencli doctor
+```
+
 ## Quick Start
 
 ### Install via npm (recommended)

README.zh-CN.md

@@ -72,6 +72,12 @@ OpenCLI 通过 Playwright MCP Bridge 扩展与你的浏览器通信。
 export PLAYWRIGHT_MCP_EXTENSION_TOKEN="<你的-token>"
 ```
 
+配置完成后，运行 `opencli doctor` 检测你的 Token 是否在所有位置都正确配置：
+
+```bash
+opencli doctor
+```
+
 ## 快速开始
 
 ### npm 全局安装（推荐）