docs: add VitePress documentation site

- Add docs directory with VitePress configuration
- Add GitHub Actions workflow for docs build and deploy
- Support bilingual (English/Chinese) documentation
- Include search, custom theme, and responsive design

docs/tsconfig.json

@@ -0,0 +1,39 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "ESNext",
+    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "jsx": "preserve",
+    "strict": true,
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "allowJs": true,
+    "checkJs": false,
+    "isolatedModules": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "noEmit": true,
+    "declaration": false,
+    "declarationMap": false,
+    "sourceMap": true,
+    "removeComments": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "baseUrl": ".",
+    "paths": {
+      "@/*": [".vitepress/*"],
+      "@theme/*": [".vitepress/theme/*"]
+    },
+    "types": ["vite/client", "node"]
+  },
+  "include": [
+    ".vitepress/**/*",
+    "scripts/**/*"
+  ],
+  "exclude": [
+    "node_modules",
+    ".vitepress/dist"
+  ]
+}