Complete blog kit for Next.js and shadcn

I just installed an MDX blog using shadcn registry. Please help me complete the setup: 1. Add `@plugin "@tailwindcss/typography";` to your `globals.css` file (after the `@import "tailwindcss";` line) 2. Create a `posts/` folder in my project root 3. Create my first blog post at `posts/hello-world.mdx` with this frontmatter: - title: "Hello World" - date: today's date formatted like "January 1st, 2025" - category: "General" - description: "My first blog post" - author: "Your Name" - readingTime: "2 min read" Add some example content with a few h2 headings to demonstrate the table of contents. 4. Add a "Blog" link to my navbar that links to /blog