dsh-design-kit: Unified Design Delivery Plugin for DSH

`yifeng123589/dsh-design-kit` is a unified design delivery plugin for DeepSeek Harness (DSH), currently at version 0.1.5, licensed under MIT, and requiring Node.js >= 22. It provides a design-kit skill entry point and ten tools divided into three groups: `design_lint`, `design_tokens`, and `design_capture` for handling pages and design tokens; `probe_shortlist`, `probe_shortlist_preview`, `probe_shortlist_ui_action`, and `probe_measure` for multi-directional coarse selection and single-axis parameter fine-tuning; and `deck_check`, `deck_export`, and `deck_render` for PPT quality checks, PPTX export, and PDF/PNG rendering. Installation involves downloading the runtime package from GitHub Releases, decompressing it, adding it to the DSH profile as a local directory via `pnpm add`, adding `dsh-design-kit` to `dsh.profile.bundles`, and performing a full restart. The plugin is not a general-purpose Skill package, so switching hosts will not automatically grant the tools. It runs with the current DSH process permissions and should only be installed from trusted sources.