✨ feat: enhance post retrieval with authorization token

- Updated `getPostById` function to accept an optional authorization token.
- Modified `PostPage` to retrieve the token from cookies and pass it to the API call.
- Added smooth transition effects for background and text colors in `globals.css`.
- Cleaned up imports and formatting in `blog-home.tsx`.
- Refactored `blog-post.tsx` to use `MDXRemote` for rendering markdown content.
- Introduced `blog-comment.tsx` and `blog-post-header.client.tsx` components for better structure.
- Added a switch component for dark/light mode toggle in the navbar.
- Updated `Post` model to include a description field.

web/src/app/(main)/p/[id]/page.tsx

@@ -1,4 +1,5 @@
 import { getPostById } from '@/api/post'
+import { cookies } from 'next/headers'
 import BlogPost from '@/components/blog-post'
 
 interface Props {
@@ -6,8 +7,9 @@ interface Props {
 }
 
 export default async function PostPage({ params }: Props) {
+  const cookieStore = await cookies();
   const { id } = await params
-  const post = await getPostById(id)
+  const post = await getPostById(id, cookieStore.get('token')?.value || '');
   if (!post)
     return <div>文章不存在</div>
   return <BlogPost post={post} />