Function extractPagination

extractPagination(input: DocumentInput): PaginationMetadata
Extract pagination metadata from HTML.
Parameters
- input: DocumentInput
  Parsed HTML document or raw HTML string
Returns PaginationMetadata
Pagination metadata
Remarks
Extracts pagination navigation links including prev, next, first, last, up (parent), and index links.
Example
```
// With parsed document (recommended for multiple extractions)
const doc = parseHTML(htmlString);
const pagination = extractPagination(doc);

// Or directly with HTML string
const pagination = extractPagination(htmlString);
```
- Defined in src/metadata/pagination/extract.ts:34