feat(blog): add Article entity with rich-text content + domain errors

packages/blog/src/entities/article.ts

@@ -0,0 +1,17 @@
+import { z } from "zod";
+
+export const articleStatusSchema = z.enum(["draft", "published"]);
+
+export const articleSchema = z.object({
+  id: z.string(),
+  title: z.string().min(1).max(255),
+  slug: z.string().min(1).max(255),
+  content: z.unknown(),
+  status: articleStatusSchema.default("draft"),
+  authorId: z.string(),
+  createdAt: z.date(),
+  updatedAt: z.date(),
+});
+
+export type Article = z.infer<typeof articleSchema>;
+export type ArticleStatus = z.infer<typeof articleStatusSchema>;