trailmap: A Disk-Persistent Execution Planning Plugin

trailmap is a workflow plugin for the DSH environment that mitigates progress loss in multi-step tasks caused by session interruptions. It persists task states, milestones, and retrospective records to the `.trail/` directory, supporting state-machine transitions, dependency management, cycle detection, and automated retrospectives. The plugin provides a CLI, DSH tools, and a skill interface to ensure tasks are structured and recoverable. Installation requires Node >= 20; pay attention to directory permissions and version control.