People Presentation
This folder holds the people workspace UI.
people_view.dart is now the composition root for the slice, with the heavy UI
split into library parts:
people_view_list.dart: list, filters, empty states, and person cards.people_view_detail.dart: detail workspace, insights, and inline editors.people_view_dialogs.dart: modal editors and quick-capture flows.providers/people_ui_state.dart: search, selection, and sorting state.
Add new people UI inside this folder. Do not move slice-specific widgets back into shared horizontal folders unless they are genuinely cross-feature.