dsh-cli-store: Secure CLI Tool Registration and Installation for DeepSeek Harness

dsh-cli-store is a DeepSeek Harness (DSH) plugin maintained by Harzva, designed to securely address installation and verification issues when agents invoke external CLI tools. As a registry, it provides a set of commands for searching, discovering, saving, installing, and diagnosing binary tools. The plugin follows a security-first design, managing installation flows with strict permission controls and validation mechanisms (such as dry-run mode and prevention of shell injection). Developers can use it to safely integrate tools like `gh` and `ffmpeg`, making it well suited to scenarios that require managing large numbers of external CLIs.