feat: refactor

src/content/config.ts

@@ -0,0 +1,15 @@
+import { defineCollection, z } from "astro:content";
+
+const postsCollection = defineCollection({
+  type: "content",
+  schema: z.object({
+    title: z.string(),
+    description: z.string().optional(),
+    date: z.string().optional(),
+    useKatex: z.boolean().optional().default(false),
+  }),
+});
+
+export const collections = {
+  posts: postsCollection,
+};