- link to url, blog_categories to all-journal-categories, --map old=new on top; page entries dropped
- entries of unknown types or stale registry references dropped with their subtree, one report line per dropped or remapped entry
- ids, menu_id, parent_id, nest columns and sort_order kept; setval for both tables; --force, --dry-run, empty files copy nothing
- scripts/winter-export-menus.sql and winter-export-entries.sql
- TestMenuImportSmoke
