dsh-trusted-page: DSH Web Remote Trusted Access Plugin

The DSH Web Remote Trusted Access plugin, developed by liujuntao123, resolves errors on the Models / Settings page that occur when remote access is made via a reverse tunnel or custom domain. It provides a visual configuration interface in the settings panel, allowing users to add trusted domains. After configuration, the system automatically includes the domain in API allowlisting and page trust validation, ensuring that settings persistence works properly during remote access. The plugin supports IPv6 and automatic fault tolerance, and has been verified on `@deepseek-ai/dsh` 0.1.5-rc.1.