guidebook includes built-in full-text search.
A search index is generated during build. Users can search using the search box in the sidebar.
The search index is stored in search_index.json in the output directory.
For large books, the initial build may take a few seconds to generate the index.
During development (guidebook serve), the search index is not regenerated on every change to improve rebuild speed. Restart the server to update the search index.