dsh-deepsleep: DeepSeek Harness Mobile Layout Adaptation and LAN Proxy

`dsh-deepsleep` is a plugin designed specifically for the DSH client to address usability issues on mobile devices. By adapting to a single-column layout and optimizing touch interactions, it improves the display experience on smartphones and supports notched screens. It also provides a password-protected local area network (LAN) proxy, allowing users to access DSH directly from their phones; however, it should only be used in secure environments.