fix: batch bug fixes matching backend changes

- Promo code errors: add inactive/not_yet_valid translations (4 locales) + Balance.tsx parser
- Daily 100% discount: render price block when originalDailyPrice > 0
- Webvisor: enable in Yandex Metrika init config
- Referral attribution: consume campaign/referral slugs only after successful auth (all login methods)
- registerWithEmail: consume referral code after success
- AdminSettings: move TARIFF_MODE_SETTINGS to module scope (fix eslint warning)

src/pages/AdminSettings.tsx

@@ -43,6 +43,9 @@ const ChevronRightIcon = () => (
   </svg>
 );
 
+// Settings that require SALES_MODE=tariffs to be visible
+const TARIFF_MODE_SETTINGS = ['MULTI_TARIFF_ENABLED', 'MAX_ACTIVE_SUBSCRIPTIONS'];
+
 export default function AdminSettings() {
   const { t } = useTranslation();
   const navigate = useNavigate();
@@ -85,9 +88,6 @@ export default function AdminSettings() {
     }
   }
 
-  // Settings that require SALES_MODE=tariffs to be visible
-  const TARIFF_MODE_SETTINGS = ['MULTI_TARIFF_ENABLED', 'MAX_ACTIVE_SUBSCRIPTIONS'];
-
   // Check if tariffs mode is active
   const isTariffsMode = useMemo(() => {
     if (!allSettings || !Array.isArray(allSettings)) return false;