feat: 添加定价页面组件和图标库迁移

refactor: 替换lucide-react为react-icons
feat(定价): 实现定价页面、卡片和切换组件
feat(页脚): 添加页脚链接组件
feat(文档): 新增使用条款、隐私政策和联系页面
style: 更新Toast组件样式和动画
chore: 更新项目元数据和favicon

web/package.json

@@ -34,6 +34,7 @@
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-hot-toast": "^2.4.1",
+    "react-icons": "^5.5.0",
     "remark": "^15.0.1",
     "remark-html": "^16.0.1",
     "remark-parse": "^11.0.0",