dsh-ssh-tui: DeepSeek Harness Terminal for Jump Hosts and Remote SSH

`dsh-ssh-tui` is a pure terminal plugin for DeepSeek Harness designed specifically for jump servers, headless servers, and high-latency SSH scenarios. It runs without a browser or mouse, requiring only an ANSI-supported terminal, aiming to solve the problem of limited interface interaction in remote development. The plugin's core features include a collapsible model thinking stream display, workspace Markdown rendering, prompt injection cards, visualized tool call status (such as Git-style diff), session history recovery, and sub-agent progress monitoring. Users can review the transcript area via PgUp/PgDn, and it supports interactions such as approval and plan mode. The runtime requirements are Node.js ≥ 22.19, DSH CLI, and pnpm. To install, execute `dsh plugin --profi