dsh-skills-hub: A Cross-Platform Unified Skills Manager for DeepSeek Harness

`dsh-skills-hub` is a cross-platform AI skill manager designed to address the skill maintenance challenges faced by multi-tool developers. By using a centralized skill library and system symbolic links, it enables a single source of data to drive multiple Agent tools (such as Cursor and Claude Code). The plugin supports one-click installation and features intelligent platform mapping, symbolic-link installation, uninstall semantics that distinguish link removal from other actions (removing a link deletes only the link), and custom platform configuration. It is open source under the MIT License, ensuring secure and unified management of skill libraries.