dsh-todo-board: Cross-Session Task Management

dsh-todo-board is a cross-session task management plugin for DeepSeek Harness. It appears as a floating window in the top-right corner and supports grouping by working directory, drag-and-drop sorting, and switching between four UI styles. Each todo item can independently configure an execution mode (reminder, automatic continuation, automatic new session) and a deadline. Task state is derived from live sessions and includes a dual check-off mechanism for AI completion and user acceptance. The plugin supports task decomposition for long tasks, pasting screenshots, scheduled execution, and self-healing from failures. Users plan tasks using the `/todo` command. After the AI completes a task, it automatically marks it as done and identifies the next task; after user acceptance, the task is moved to the completed list. After installation, restarting the Profile is required, and data is stored locally.