DB→domain→API→AP→frontend end-to-end. Fields stored as JSONB, exposed via PATCH /users/me, serialized as AP PropertyValue attachment. Editor in federation settings, display on profile card.
- Thought::new_local → NewThought struct (7 args → 1) - UserWriter::update_profile → UpdateProfileInput struct (6 args → 2) - update_profile use case → UpdateProfileInput (8 args → 3) - ActivityPubService::new → builder pattern (9 args → 5 required + 4 optional setters) - accept_note → AcceptNoteInput struct (8 args → 1) - ThoughtNote::new_public → ThoughtNoteInput struct (8 args → 1) Remove all #[allow(clippy::too_many_arguments)] annotations.
