dsh-version-autoupdate: DeepSeek Harness Version Capsules and One-Click Update

`dsh-version-autoupdate` is a dual-sided Cordis plugin for DeepSeek Harness (DSH), designed to simplify version management in multi-environment deployments through visual floating capsules. The plugin supports npm, pnpm, and Yarn, providing real-time version detection, automatic installation, API integration, and flexible update policies. It supports offline installation and systemd management, but has limitations in desktop edition and non-global installation scenarios: Windows requires a manual restart, while Linux/macOS allow CLI-based updates.