dsh-mobile-gui-agent: Enhancing DeepSeek Harness with Android GUI Operation Capabilities

`dsh-mobile-gui-agent` is an Android GUI Agent plugin for DeepSeek Harness (DSH), currently at version v0.2.1 under the MIT license. This plugin controls Android devices via ADB, integrating screenshots, UIAutomator hierarchy capture, action execution, verification, human approval, and a web mobile view to achieve an automated "observe-decide-act-verify" loop. Its core capabilities include comprehensive ADB operations (such as clicking, swiping, and text input), strict `phone_observe` and `phone_act` tool interfaces, stability protection mechanisms for detecting stale elements and system lag, and safeguards for sensitive operations (such as payments, deletions, and installations).