dsh-mattpocock-skills: DeepSeek Harness Skill Pack Plugin (Localized Version)

The `dsh-mattpocock-skills` plugin for DeepSeek Harness (DSH) fully localizes the 25 high-value skills in the `mattpocock/skills` repository into Chinese and packages them as a DSH plugin. It includes 18 engineering skills (such as code review and TDD) and 7 productivity skills, registered as a bundled-level provider with rank 600. It supports slash-command invocation (`/skill-name`) and automatic model triggering, has no external dependencies, and can be initialized for use via `/setup-matt-pocock-skills` after installation.