- Move promo groups from Servers tab to Extra tab
- Add isActive toggle in Extra tab (tariff status)
- Remove trial toggle from form (not needed for now)
- Replace "T" letter with gift icon for trial toggle in tariff list
- Add i18n translations for new status fields
- Remove unused fields: custom_days, custom_traffic (bot doesn't use them)
- Add promo groups selection to tariff form
- Add API endpoint for fetching available promo groups
- Make traffic topup packages dynamic (add/remove any number)
- Fix stuck 0 in number inputs when clearing
- Add validation messages explaining why save button is blocked
- Match bot validation: name 2-50 chars, device_limit >= 1, tier_level 1-10
- Add missing i18n translations for new fields and validation errors
Add placeholders for all remaining inputs in AdminTariffCreate:
- Periods tab: days, price inputs
- Extra tab: device price, max devices, traffic limit
- Traffic packages: 5/10/20/50 GB prices
- Custom days: price per day, min/max days
- Custom traffic: price per GB, min/max traffic
- Add inputHelpers utility for number inputs that allow empty values
- Update tariff, campaign, promo offers, and server forms
- Add validation for required fields (deviceLimit, tierLevel, dailyPrice)
- Add placeholders and error indicators for empty required fields
- Add fieldRequired and dailyPriceRequired translations
- AdminBackButton now navigates to /admin/tariffs instead of /admin
- Fixed dynamic Tailwind classes for daily tariff (warning colors)
- Tabs, servers, and reset mode buttons now use proper warning
colors for daily tariffs
