Establish the publication foundation

src/content.config.ts

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+import { defineCollection } from 'astro:content';
+import { glob } from 'astro/loaders';
+import { z } from 'astro/zod';
+
+const status = z.enum(['developing', 'disputed', 'resolved', 'historical']);
+
+const maintenance = {
+  author: z.string().default('Ana'),
+  maintainers: z.array(z.string()).default(['Ana']),
+  reviewed: z.coerce.date(),
+  status: status.default('developing'),
+  draft: z.boolean().default(false),
+};
+
+const stories = defineCollection({
+  loader: glob({ base: './src/content/stories', pattern: '**/*.md' }),
+  schema: z.object({
+    title: z.string(),
+    description: z.string(),
+    published: z.coerce.date(),
+    featured: z.boolean().default(false),
+    tags: z.array(z.string()).default([]),
+    image: z.string().optional(),
+    imageAlt: z.string().optional(),
+    trustPattern: z
+      .object({
+        claim: z.string(),
+        trusted: z.string(),
+        failure: z.string(),
+      })
+      .optional(),
+    ...maintenance,
+  }),
+});
+
+const briefings = defineCollection({
+  loader: glob({ base: './src/content/briefings', pattern: '**/*.md' }),
+  schema: z.object({
+    title: z.string(),
+    description: z.string(),
+    issue: z.number().int().nonnegative(),
+    published: z.coerce.date(),
+    ...maintenance,
+  }),
+});
+
+const guides = defineCollection({
+  loader: glob({ base: './src/content/guides', pattern: '**/*.md' }),
+  schema: z.object({
+    title: z.string(),
+    description: z.string(),
+    firstPublished: z.coerce.date(),
+    tags: z.array(z.string()).default([]),
+    ...maintenance,
+  }),
+});
+
+const episodes = defineCollection({
+  loader: glob({ base: './src/content/episodes', pattern: '**/*.md' }),
+  schema: z.object({
+    title: z.string(),
+    description: z.string(),
+    episode: z.number().int().positive(),
+    published: z.coerce.date(),
+    duration: z.string().optional(),
+    audioUrl: z.url().optional(),
+    guests: z.array(z.string()).default([]),
+    ...maintenance,
+  }),
+});
+
+export const collections = { stories, briefings, guides, episodes };