添加 Next.js Web 应用

- 创建 Next.js + TypeScript + Tailwind CSS Web 应用
- 支持 Markdown 渲染和 GFM 格式
- 支持 Obsidian 风格 wiki 链接 [[Page|Label]]
- 侧边栏导航，按分类组织页面
- 图片资源支持（通过 API 路由从 wiki/assets 提供）
- 响应式设计
- 更新 README 添加 Web 应用使用说明

web/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "web",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "eslint"
+  },
+  "dependencies": {
+    "gray-matter": "^4.0.3",
+    "next": "16.2.3",
+    "react": "19.2.4",
+    "react-dom": "19.2.4",
+    "remark": "^15.0.1",
+    "remark-gfm": "^4.0.1",
+    "remark-html": "^16.0.1"
+  },
+  "devDependencies": {
+    "@tailwindcss/postcss": "^4",
+    "@types/node": "^20",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "eslint": "^9",
+    "eslint-config-next": "16.2.3",
+    "tailwindcss": "^4",
+    "typescript": "^5"
+  }
+}