run = ($item, program) -> ...
Purpose: Executes the search across all pages in the Wiki Sitemap.
How it Works:
Fetches Sitemap: Retrieves a list of all pages (sitemap.json) in the current wiki.
Check Pages: Iterates over each page, fetching its content and evaluating it against the program.
Display Results: Updates the UI with search results, including the number of matches and pages checked.