DeepSeek Companion: A Companion Plugin for DSH

DeepSeek Companion is the official companion plugin for DeepSeek Harness (DSH), designed to integrate conversation export, context handover, API cost optimization, and global retrieval functionalities. The plugin consists of four independent modules that can be enabled or disabled on demand. Core features include: intelligent conversation export in formats such as Markdown and PDF, with batch ZIP packaging; generation of editable four-part handover summaries for context injection into new conversations; API cost optimization supporting dynamic pricing, peak-valley scheduling, and budget control, with AES-256-GCM encrypted storage of keys; and global conversation retrieval with keyword and tag filtering, as well as in-conversation quick search. Installation requires DSH >= 0.1.0 and specific Node.js version requirements, and can be performed via the `dsh plu