feat: 新增 design-lab——Vite MPA + Tailwind v4，设计系统可运行版（五页：目录/颜色/符号/组件/样例）

apps/design-lab/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "@stack/design-lab",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1"
+  },
+  "devDependencies": {
+    "@tailwindcss/vite": "^4.1.0",
+    "@types/react": "^18.3.12",
+    "@types/react-dom": "^18.3.1",
+    "@vitejs/plugin-react": "^4.3.4",
+    "tailwindcss": "^4.1.0",
+    "typescript": "~5.6.2",
+    "vite": "^6.0.0"
+  }
+}