feat(i18n): implement comprehensive blog post enhancements

- Add avatar to personal info in data.ts
- Remove redundant headings from blog posts
- Reorder imports in utils.ts for consistency
- Implement new blog layout components including:
  - PostMeta for displaying post metadata
  - TableOfContents for navigation
  - BlogNavigation for post pagination
  - ShareButtons for social sharing
  - AuthorCard for author information
- Enhance BlogPostLayout with:
  - Improved typography and spacing
  - Responsive sidebar layout
  - Dark mode support
  - Better code block styling
- Remove outdated i18n guide documentation
- Add comprehensive styling for all new components

src/lib/data.ts

@@ -1,6 +1,7 @@
 export const personalInfo = {
   name: "Joy Zhao",
   location: "Shanghai, China",
+  avatar:"https://avatars.githubusercontent.com/u/24975063?v=4",
   email: "zhaoguiyang18@gmail.com",
   github: "https://github.com/zguiyang",
   linkedin: "https://linkedin.com/in/zhaoguiyang"

src/lib/utils.ts

@@ -1,4 +1,4 @@
-import { clsx, type ClassValue } from "clsx"
+import { type ClassValue, clsx } from "clsx"
 import { twMerge } from "tailwind-merge"
 
 export function cn(...inputs: ClassValue[]) {