dsh-worktree-jump: Create a Git Worktree in New-Conversation and Start a Conversation

`dsh-worktree-jump` is a DeepSeek Harness plugin designed to address the difficulty of switching working directories at runtime. Through a trigger in the New Conversation interface, it allows users to directly create or select a Git worktree and fork the new session into that directory, enabling seamless context switching. The plugin supports localization, has zero runtime dependencies, and provides direct access to existing worktrees. After installation, `dsh web` must be restarted. When using it, avoid conflicts between Bundle installation and manual patches.