Shared monthly report links. /share/monitoring/:token returned 404. It now forwards to /share?t=:token, the URL the portal's copy-link issues, and /share/monitoring/:token/pdf forwards to the stored monthly PDF. Tokens are 8–128 characters of A-Z a-z 0-9 _ -; any other path stays a 404. With no stored PDF the page hides its Download button.
