feat(dashboard): Dashboard support token-based login

en_US/dashboard/introduction.md

@@ -32,7 +32,7 @@ Support for custom plug-in integration, Extend EMQX connectivity protocols throu
 
 In addition to debugging through online MQTT over WebSocket client connections and publishing subscriptions, we also support diagnosing and finding issues using things like slow subscriptions and online logs tracing and alarms.
 
-## Running
+## Launch Dashboard
 
 EMQX Dashboard is a web application that listens to port `18083` by default. After installing EMQX successfully, you can access and use EMQX Dashboard by opening <http://localhost:18083/> (replace localhost with the actual IP address if deployed on a non-local machine) through your browser.
 
@@ -46,6 +46,45 @@ For users who have installed EMQX for the first time, you can use the default us
 
 After logging in for the first time, the system will automatically detect that you are logging in with the default username and password, and will force you to change the default password, which is good for the security of accessing Dashboard, note that the changed password cannot be the same as the original password, and it is not recommended to use `public` as the login password again.
 
+### Token-Based Login via URL
+
+Starting from EMQX 5.6.0, the Dashboard supports a token-based login method that allows users to log in directly by embedding authentication information in the URL.
+
+This feature is particularly useful for seamless redirection and integration scenarios where a user should be logged in automatically without entering credentials manually.
+
+#### How To Use This Login Method
+
+1. Use the `/login` endpoint to obtain an authentication token. Since the response does not include the username, you will need to manually add it before encoding the full JSON payload.
+
+   You can perform all steps, including requesting the token, injecting the username, and encoding the result in Base64, in a single command, as shown below:
+
+   ```
+   curl -s -X POST "http://127.0.0.1:18083/api/v5/login" \
+     -H 'accept: application/json' \
+     -H 'Content-Type: application/json' \
+     -d '{"username": "admin","password": "public"}' | jq '.username = "admin"' | base64
+   ```
+
+2. Construct the login URL. Embed the encoded string in the `login_meta` query parameter of the Dashboard URL. For example:
+
+   For EMQX versions **before 5.6.0**:
+
+   ```bash
+   http://localhost:18083?login_meta=BASE64_ENCODED_STRING
+   ```
+
+   This redirects to the default cluster overview page.
+
+   For EMQX **version 5.6.0 and later**:
+
+   ```bash
+   http://localhost:18083/#/dashboard/overview?login_meta=BASE64_ENCODED_STRING
+   ```
+
+   This allows specifying the target page after login.
+
+This method provides a smooth, pre-authenticated user experience for accessing the EMQX Dashboard. Make sure to handle the token securely and ensure it has appropriate expiration and scope limits.
+
 ## Reset password
 
 You can reset your Dashboard login password via the `admins` command. For details, see [CLI - admins](../admin/cli.md#admins).

zh_CN/dashboard/introduction.md

@@ -46,6 +46,47 @@ EMQX Dashboard 是一个 Web 应用程序，默认监听 `18083` 端口。下载
 
 首次登录后，系统会自动检测到您正在使用默认用户名和密码登录，并会强制要求修改默认密码，这有利于访问 Dashboard 的安全性提升，注意修改的密码不能与原密码相同，且不建议再次使用 `public` 做为登录密码。
 
+### 通过 URL Token 登录 Dashboard
+
+从 EMQX 5.6.0 开始，Dashboard 支持通过在 URL 中携带登录信息的方式进行免登录访问。
+
+此功能适用于需要无缝跳转或集成场景，可在无需用户手动输入凭据的情况下，自动登录 Dashboard。
+
+#### 使用方法
+
+使用此登录方式的步骤如下：
+
+1. 使用 `/login` 接口获取身份验证 token。由于返回结果中不包含用户名，你需要手动将用户名添加到 JSON 数据中，再进行编码。
+
+   你可以通过以下命令一步完成所有操作，包括请求 token、添加用户名，以及将结果进行 Base64 编码：
+
+   ```
+   curl -s -X POST "http://127.0.0.1:18083/api/v5/login" \
+     -H 'accept: application/json' \
+     -H 'Content-Type: application/json' \
+     -d '{"username": "admin","password": "public"}' | jq '.username = "admin"' | base64
+   ```
+
+2. 构造登录 URL。将编码后的字符串嵌入到 Dashboard URL 的 `login_meta` 查询参数中。例如：
+
+   对于 **EMQX 5.6.0 之前的版本**：
+
+   ```bash
+   http://localhost:18083?login_meta=BASE64_ENCODED_STRING
+   ```
+
+   该方式会跳转至默认的集群概览页面。
+
+   对于 **EMQX 5.6.0 及以上版本**：
+
+   ```bash
+   http://localhost:18083/#/dashboard/overview?login_meta=BASE64_ENCODED_STRING
+   ```
+
+   该方式支持在登录后跳转到指定页面。
+
+通过这种登录方式，可以为用户提供无需手动登录的便捷访问体验。请确保妥善管理 token 的安全性，建议设置合理的过期时间和访问权限范围。
+
 ## 忘记密码
 
 如果您忘记了 Dashboard 登录密码，可以通过 CLI 的 `admins` 命令进行重置，详情请参考 [命令行 - admins](../admin/cli.md#admins)：