chore: import upstream snapshot with attribution

docs/lib/types.ts

@@ -0,0 +1,38 @@
+export type Doc = {
+  slug: string;
+  title: string;
+  description: string;
+  path: `/${string}`;
+  sourcePath: `/articles/${string}.md`;
+  section: string;
+};
+
+export type DocsGroup = {
+  section: string;
+  items: Doc[];
+};
+
+export type Heading = {
+  level: 2 | 3 | 4;
+  text: string;
+  id: string;
+};
+
+export type Article = {
+  doc: Doc;
+  source: string;
+};
+
+export type SearchIndexEntry = {
+  title: string;
+  href: string;
+  section: string;
+  content: string;
+};
+
+export type SearchResult = {
+  title: string;
+  href: string;
+  section: string;
+  snippet: string;
+};