first commit

libs/encounter-library/src/lib/validate-encounters.ts

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+import { readFileSync } from 'node:fs';
+import { resolve } from 'node:path';
+import { z } from 'zod';
+
+const encounterRecord = z.object({
+  id: z.string().min(1),
+  tier: z.string(),
+  baseSuccessChance: z.number().min(0).max(1),
+  difficultyTags: z.array(z.string()),
+  perkTags: z.array(z.string()),
+  flavor: z.array(z.string()).min(1)
+});
+
+const encounterDocument = z.object({
+  schemaVersion: z.number().int().min(1),
+  records: z.array(encounterRecord)
+});
+
+function main(): void {
+  const file = resolve(process.cwd(), 'libs/encounter-library/src/lib/encounters.json');
+  const raw = readFileSync(file, 'utf-8');
+  const parsed = JSON.parse(raw) as unknown;
+  encounterDocument.parse(parsed);
+  process.stdout.write('Encounter library validation passed.\n');
+}
+
+main();