dsh-conversation-tree: Immutable Branching and Message-Level Tree Browsing

dsh-conversation-tree is a web plugin for DeepSeek Harness (DSH) that provides ChatGPT-style, message-level branch control. It allows developers to edit conversation nodes inline, regenerate messages, and browse the conversation as a tree, enabling fine-grained session management. Core features include awaiting message processing, creating sub-sessions to replay context, switching branches inline, and continuing conversations in real time. The plugin is licensed under the MIT License and requires DSH 0.1.5-rc.1.