feat(frontend): 新增多版本笔记功能，并做了向下兼容。

- 新增关于页面组件，介绍项目背景、功能和使用方法
- 重构笔记生成逻辑，支持多版本笔记
- 新增笔记版本选择、复制和导出功能
-优化笔记界面布局和交互
- 调整部分组件样式，提升用户体验

BillNote_frontend/package.json

@@ -21,7 +21,7 @@
     "@radix-ui/react-select": "^2.1.6",
     "@radix-ui/react-slot": "^1.1.2",
     "@radix-ui/react-switch": "^1.2.2",
-    "@radix-ui/react-tabs": "^1.1.4",
+    "@radix-ui/react-tabs": "^1.1.9",
     "@radix-ui/react-tooltip": "^1.1.8",
     "@tailwindcss/vite": "^4.1.3",
     "@uiw/react-markdown-preview": "^5.1.3",
@@ -29,16 +29,19 @@
     "axios": "^1.8.4",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "fuse.js": "^7.1.0",
     "github-markdown-css": "^5.8.1",
     "katex": "^0.16.22",
     "lottie-react": "^2.4.1",
     "lucide-react": "^0.487.0",
     "markdown-navbar": "^1.4.3",
     "next-themes": "^0.4.6",
+    "pinyin-match": "^1.2.7",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-hook-form": "^7.55.0",
     "react-hot-toast": "^2.5.2",
+    "react-intersection-observer": "^9.16.0",
     "react-markdown": "^8.0.7",
     "react-medium-image-zoom": "^5.2.14",
     "react-resizable-panels": "^2.1.8",
@@ -51,6 +54,7 @@
     "tailwind-merge": "^3.1.0",
     "tailwindcss": "^4.1.3",
     "tw-animate-css": "^1.2.5",
+    "uuid": "^11.1.0",
     "zod": "^3.24.2",
     "zustand": "^5.0.3"
   },