Show connected devices in subscription tab with ability to:
- View device platform, model, HWID and connection date
- Delete individual devices
- Reset all devices at once
- Load panel + node data once on tab open (not per period change)
- Compute 7/14/30 day totals locally from cached daily data
- Add refresh button to subscription section
- No API calls when switching periods
- Add country_code to UserNodeUsageItem type
- Add getCountryFlag helper for country code to emoji mapping
- Show country flag next to node name in usage bars
- Add campaign card and referrals list to info tab
- Add panel config/links, live traffic, connection info to subscription tab
- Add node usage bars with 7/14/30 day period selector
- Add getPanelInfo/getNodeUsage API methods and types
- Add 18 new i18n keys across 4 languages
- Add fullDeleteUser API method calling DELETE /admin/users/{id}/full
- Add Reset trial, Reset subscription, Disable, Delete buttons to AdminUserDetail info tab
- Implement inline confirm pattern (click → "Are you sure?" → execute, 3s timeout)
- Delete now calls /full endpoint removing user from bot DB and Remnawave panel
- Remove UserActionsMenu dropdown, ConfirmationModal and related code from AdminUsers list
- Update delete confirmation text in ru/en locales to reflect full deletion
