Pagination and page size
- `ENTRIES_PAGE_LIMIT = 10` is the single constant for:
- the index first load,
- `GET /api/entries` (with optional ?cursor=),
- and thus the embed widget, which uses the same API.
- Index still uses the existing Load More script against /api/entries.
- `/client.js` embed now includes Load more: it uses nextCursor from the API and appends batches until there is no next page. New hooks: .gb-load-more-wrap, .gb-load-more-btn.