new file: serv_nginx/api_bb/internal/scripts/migrate_existing_users.go
modified: serv_nginx/api_bb/internal/service/auth_service.go
modified: serv_nginx/api_bb/internal/service/user_stats_service.go
modified: serv_nginx/bbvue/src/views/Achievements.vue
modified: serv_nginx/bbvue/src/views/Reviews.vue
modified: serv_nginx/bbvue/src/views/Training.vue
fix bag with no stats into table