migrate to root dir

lib/pipeline/validator.ts

@@ -0,0 +1,31 @@
+import { StoryConfig } from "./config";
+
+export interface ValidationResult {
+  is_public_domain: boolean;
+  message: string;
+}
+
+export function validatePublicDomain(storyConfig: StoryConfig): ValidationResult {
+  const publicationYear = storyConfig.metadata.publication_year;
+  if (!publicationYear) {
+    return {
+      is_public_domain: false,
+      message: "Publication year not found in metadata.",
+    };
+  }
+
+  const currentYear = new Date().getFullYear();
+  const cutoffYear = currentYear - 95;
+
+  if (publicationYear > cutoffYear) {
+    return {
+      is_public_domain: false,
+      message: `Work published in ${publicationYear} is not yet in the US public domain (cutoff: ≤ ${cutoffYear}).`,
+    };
+  }
+
+  return {
+    is_public_domain: true,
+    message: "Work is in the public domain in the US (95-year rule).",
+  };
+}