- Login: by phone number instead of username
- Position field: shown as badge next to name in members list, search, admin panel
- Logout: moved from sidebar to profile modal settings
- Sidebar search: global — shows matching users with one-click private chat
- Admin panel: new Чаты tab showing all chats with delete, position/phone in user form
- Backend: /api/admin/chats endpoint, position column migration, phone login support
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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