DSH Plugin Mobile Gateway: iPhone Connects to DSH via Device-Authenticated WebSocket

dsh-plugin-mobile-gateway is a DSH plugin licensed under MIT, designed to allow iPhones to connect to DeepSeek Harness via WebSocket with device authentication. The plugin provides a "Mobile Devices" entry point in the DSH WebUI, supporting gateway activation, generation of one-time pairing QR codes, and management of trusted devices. The plugin supports multiple access scenarios: first, LAN access via `ws://<IP>:3081/ws/mobile`; second, public access from Linux servers, suitable for Ubuntu/Debian systems, automatically installing components such as Nginx and Certbot through initialization commands to provide a `wss://<IP>/ws/mobile` entry point; third, remote