_find_additional_faces is a placeholder returning an empty list, so the multi-face / similarity-matrix sprint-4 capability behind /faces/detect-all cannot actually find additional faces. (Internal-only — no api proxy.)
Evidence: app/application/use_cases/detect_multi_face.py:120-129 ('placeholder ... would implement region-based detection' → return []).
Fix: implement region-based detection on the excluded regions, or use a detector that natively supports multiple faces; otherwise document the endpoint as not-implemented.
Source: MASTER_ISSUE_REGISTER_2026-06-03 (BIO-10), re-verified on HEAD 2026-06-13.
_find_additional_facesis a placeholder returning an empty list, so the multi-face / similarity-matrix sprint-4 capability behind/faces/detect-allcannot actually find additional faces. (Internal-only — no api proxy.)Evidence:
app/application/use_cases/detect_multi_face.py:120-129('placeholder ... would implement region-based detection' →return []).Fix: implement region-based detection on the excluded regions, or use a detector that natively supports multiple faces; otherwise document the endpoint as not-implemented.
Source: MASTER_ISSUE_REGISTER_2026-06-03 (BIO-10), re-verified on HEAD 2026-06-13.