The admin_api was querying eventify-backend's empty PostgreSQL. Real users
live in eventify-django's SQLite (db.sqlite3 on host). Fix:
- settings.py: auto-adds 'users_db' database config when users_db.sqlite3
is mounted into the container (read-only volume in docker-compose)
- views.py: _user_db() helper selects the correct database alias;
_user_qs() defers 'partner' field (absent from older SQLite schema)
- UserMetricsView, UserListView, UserDetailView, UserStatusView all use
_user_qs() so they query the 25 real registered customers
Sicherhaven
54aa7ce06e