Phase 2 increment 4:
- recluster(user): union-find connected-components over the user's face
embeddings (cosine threshold); groups of >= min_faces become persons, and
an existing person's name is preserved across reclusters. O(n^2) — fine
for moderate libraries; an ANN index is the documented scale-up.
- caller_id-scoped use cases for the HTTP layer: list_people (non-empty
clusters, cover thumbnail, most-photographed first), person_photos,
faces_for_file, rename, hide, merge, and delete_all (right to erasure).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JW6ghFMDtnRYuYNzZhb47M
Claude