Page number (1-based, default 1)

Items per page (1-500, default 25)

Search by name, email, or phone

Filter to trainees with this label

Match by email (case insensitive)

Match by phone number

Filter by coaching status. "active" = has an active coaching period. "pending" = invited but not yet approved by the coach; these trainees are not returned by the other filters, and their activeCoachDetails.pendingCoachDate tells you how long they have been waiting. "archived" = removed with DELETE /trainees/{traineeId}; they are excluded from every other filter and from GET /trainees/{traineeId}, which answers 403 for them, so this is the only way to see them. Archived results carry no activeCoachDetails, and support only page, limit, search, email and phone. Bring one back with POST /trainees/{traineeId}/restore.