Add macOS Golden Gate design skill (#3088)

docs/README.skills.md

@@ -259,6 +259,7 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-skills) for guidelines on how to
 | [legacy-circuit-mockups](../skills/legacy-circuit-mockups/SKILL.md)<br />`gh skills install github/awesome-copilot legacy-circuit-mockups` | Generate breadboard circuit mockups and visual diagrams using HTML5 Canvas drawing techniques. Use when asked to create circuit layouts, visualize electronic component placements, draw breadboard diagrams, mockup 6502 builds, generate retro computer schematics, or design vintage electronics projects. Supports 555 timers, W65C02S microprocessors, 28C256 EEPROMs, W65C22 VIA chips, 7400-series logic gates, LEDs, resistors, capacitors, switches, buttons, crystals, and wires. | `references/28256-eeprom.md`<br />`references/555.md`<br />`references/6502.md`<br />`references/6522.md`<br />`references/6C62256.md`<br />`references/7400-series.md`<br />`references/assembly-compiler.md`<br />`references/assembly-language.md`<br />`references/basic-electronic-components.md`<br />`references/breadboard.md`<br />`references/common-breadboard-components.md`<br />`references/connecting-electronic-components.md`<br />`references/emulator-28256-eeprom.md`<br />`references/emulator-6502.md`<br />`references/emulator-6522.md`<br />`references/emulator-6C62256.md`<br />`references/emulator-lcd.md`<br />`references/lcd.md`<br />`references/minipro.md`<br />`references/t48eeprom-programmer.md` |
 | [linkedin-post-formatter](../skills/linkedin-post-formatter/SKILL.md)<br />`gh skills install github/awesome-copilot linkedin-post-formatter` | Format and draft compelling LinkedIn posts using Unicode bold/italic styling, visual separators, structured sections, and engagement-optimized patterns. USE FOR: draft LinkedIn post, format text for LinkedIn, create social media post, write thought leadership post, convert content to LinkedIn format, LinkedIn carousel text, Unicode bold italic formatting. | `references/unicode-charmap.md` |
 | [lsp-setup](../skills/lsp-setup/SKILL.md)<br />`gh skills install github/awesome-copilot lsp-setup` | Enable code intelligence (go-to-definition, find-references, hover, type info) for any programming language by installing and configuring an LSP server for Copilot CLI. Detects the OS, installs the right server, and generates the JSON configuration (user-level or repo-level). Use when you need deeper code understanding and no LSP server is configured, or when the user asks to set up, install, or configure an LSP server. | `references/lsp-servers.md` |
+| [macos-golden-gate-design](../skills/macos-golden-gate-design/SKILL.md)<br />`gh skills install github/awesome-copilot macos-golden-gate-design` | Design, implement, review, or refactor native macOS 27 Golden Gate interfaces in SwiftUI or AppKit. Use when a Mac app must match Apple's current macOS 27 UI kit and restrained Liquid Glass language: integrated windows, full-height sidebars, native toolbars, flat lists, tables, and forms, clear pane boundaries, accessible materials, and removal of unnecessary nested cards, framed panels, or glassmorphism. Also use for Figma macOS 27 design-to-code work and audits of interfaces that feel too boxed. | `references/design-patterns.md`<br />`references/sources.md`<br />`references/swiftui-implementation.md` |
 | [make-repo-contribution](../skills/make-repo-contribution/SKILL.md)<br />`gh skills install github/awesome-copilot make-repo-contribution` | All changes to code must follow the guidance documented in the repository. Before any issue is filed, branch is made, commits generated, or pull request (or PR) created, a search must be done to ensure the right steps are followed. Whenever asked to create an issue, commit messages, to push code, or create a PR, use this skill so everything is done correctly. | `assets/issue-template.md`<br />`assets/pr-template.md` |
 | [markdown-to-html](../skills/markdown-to-html/SKILL.md)<br />`gh skills install github/awesome-copilot markdown-to-html` | Convert Markdown files to HTML similar to `marked.js`, `pandoc`, `gomarkdown/markdown`, or similar tools; or writing custom script to convert markdown to html and/or working on web template systems like `jekyll/jekyll`, `gohugoio/hugo`, or similar web templating systems that utilize markdown documents, converting them to html. Use when asked to "convert markdown to html", "transform md to html", "render markdown", "generate html from markdown", or when working with .md files and/or web a templating system that converts markdown to HTML output. Supports CLI and Node.js workflows with GFM, CommonMark, and standard Markdown flavors. | `references/basic-markdown-to-html.md`<br />`references/basic-markdown.md`<br />`references/code-blocks-to-html.md`<br />`references/code-blocks.md`<br />`references/collapsed-sections-to-html.md`<br />`references/collapsed-sections.md`<br />`references/gomarkdown.md`<br />`references/hugo.md`<br />`references/jekyll.md`<br />`references/marked.md`<br />`references/pandoc.md`<br />`references/tables-to-html.md`<br />`references/tables.md`<br />`references/writing-mathematical-expressions-to-html.md`<br />`references/writing-mathematical-expressions.md` |
 | [markstream-install](../skills/markstream-install/SKILL.md)<br />`gh skills install github/awesome-copilot markstream-install` | Install and configure Markstream streaming Markdown renderers for Vue, React, Svelte, Angular, Nuxt, and Vue 2 applications. Use for package selection, minimal peer dependencies, CSS order, SSR boundaries, streaming mode, and renderer setup. | `references/scenarios.md` |