GET /api/ee/content-diagnostics/duplicated

List duplicated findings - the latest valid finding per (entity, finding-type) across the duplicated finding types (currently just duplicate_name), permission-filtered for the current user. Each item is a flat identity + a top-level duplicate_count (the number of other same-type entities sharing the normalized name) + a nested details (collection, description, owner, creator, normalized_name, and the hydrated same-type duplicate_entities peers). Card items also carry a top-level card_type (question|model|metric) - card findings only, denormalized at scan time. Paginated via limit/offset; total is the full valid count.

Params: include-personal-collections (default false) - when false, entities currently in a personal collection are excluded and personal-collection peers are omitted from duplicate_entities. entity-types (repeatable, omitted = all) narrows the flagged entity by type; the card sub-kinds are valid values, card means any card type, and collection finds same-named collections instance-wide, regardless of parent. Peers are not filtered - cards cluster across sub-kinds, so a model's peers can be questions. min-duplicate-count (positive int) keeps findings with at least that many peers. query case-insensitively substring-matches the entity name. sort-column (detected-at|entity-type|name|created-at|created-by|collection-name|duplicate-count, default detected-at) + sort-direction (asc|desc, default asc); id is the stable tiebreak.