DSH Whale Companion: Blue Whale Persona Addition and Automatic Session Resumption

`dsh-whale-companion` is a DeepSeek Harness plugin designed to address long-conversation coherence and role injection issues. It injects a blue whale girl persona into the Harness by appending a section, without disturbing its original identity. In addition, when the WebUI session context reaches 88%, the plugin automatically creates a new session and hands off the context to keep the conversation going. It supports custom personas, tool calls, and configuration switches, with robust fault tolerance, providing users with a minimally invasive solution for long conversations and role-playing.