Requires an authenticated session. Results are always scoped to the calling user's affiliate
(the affiliate id is taken from the request context, never from the query) so an affiliate can
only ever see its own issues. Issues are returned newest-first (by last-detected date).

status accepts: Open, Acknowledged, Resolved, Muted.
severity accepts: Info, Warning, Error, Critical.
issueType is the internal lifecycle key (e.g. link_404); use the metadata
endpoint to discover valid values.
Paginate with offset (0-based number of items to skip) and limit (page size).