dsh-resume-on-restart: Detect DSH Restart and Notify the Main Agent

dsh-resume-on-restart is a DeepSeek Harness (DSH) plugin designed to address session and work loss caused by service restarts. It detects restarts by reading Marker files and automatically delivers informative messages to the main Agent, including the interruption duration and a summary of the last active session, allowing the Agent to independently determine the next action. It is designed to run in DSH Desktop and provides core capabilities such as restart detection, activity tracking, and message delivery, helping users quickly restore context after an unexpected restart.