feat: multi-authors within one article support

src/content/posts/_schemas.ts

@@ -10,5 +10,5 @@ export const posts = ({ image }) => z.object({
   categories: z.array(z.string()).default(['uncategorized']),
   tags: z.array(z.string()).optional(),
   cover: image().optional(),
-  author: reference('authors').optional(),
+  author: z.union([z.array(reference('authors')), reference('authors')]).optional(),
 });

src/content/posts/terminal-setup/index.md

@@ -2,6 +2,9 @@
 title: 'My Terminal Setup'
 description: 'A walkthrough of my current terminal configuration'
 pubDate: '2025-06-08'
+author: 
+  - 'Glados'
+  - 'Wheatley'
 ---
 ![cover from mohammad-rahmani-oXlXu2qukGE-unsplash](./demo.png)
 Here's my current terminal setup: