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;

src/pages/Balance.tsx

@@ -177,15 +177,20 @@ export default function Balance() {
     } catch (error: unknown) {
       const axiosError = error as { response?: { data?: { detail?: string } } };
       const errorDetail = axiosError.response?.data?.detail || 'server_error';
-      const errorKey = errorDetail.toLowerCase().includes('not found')
+      const detail = errorDetail.toLowerCase();
+      const errorKey = detail.includes('not found')
         ? 'not_found'
-        : errorDetail.toLowerCase().includes('expired')
-          ? 'expired'
-          : errorDetail.toLowerCase().includes('fully used')
-            ? 'used'
-            : errorDetail.toLowerCase().includes('already used')
-              ? 'already_used_by_user'
-              : 'server_error';
+        : detail.includes('deactivated')
+          ? 'inactive'
+          : detail.includes('not yet active')
+            ? 'not_yet_valid'
+            : detail.includes('expired')
+              ? 'expired'
+              : detail.includes('fully used')
+                ? 'used'
+                : detail.includes('already used')
+                  ? 'already_used_by_user'
+                  : 'server_error';
       setPromocodeError(t(`balance.promocode.errors.${errorKey}`));
       setPromoSelectSubs(null);
       setPromoSelectCode(null);

src/pages/SubscriptionPurchase.tsx

@@ -873,7 +873,7 @@ export default function SubscriptionPurchase() {
                             const dailyPrice =
                               tariff.daily_price_kopeks ?? tariff.price_per_day_kopeks ?? 0;
                             const originalDailyPrice = tariff.original_daily_price_kopeks || 0;
-                            if (dailyPrice > 0) {
+                            if (dailyPrice > 0 || originalDailyPrice > 0) {
                               const promoDaily = applyPromoDiscount(
                                 dailyPrice,
                                 originalDailyPrice > dailyPrice ? originalDailyPrice : undefined,

src/pages/VerifyEmail.tsx

@@ -4,7 +4,7 @@ import { useTranslation } from 'react-i18next';
 import { authApi } from '../api/auth';
 import { useAuthStore } from '../store/auth';
 import { useShallow } from 'zustand/shallow';
-import { consumeCampaignSlug } from '../utils/campaign';
+import { consumeCampaignSlug, getPendingCampaignSlug } from '../utils/campaign';
 import { tokenStorage } from '../utils/token';
 import LanguageSwitcher from '../components/LanguageSwitcher';
 
@@ -39,8 +39,9 @@ export default function VerifyEmail() {
 
     const verify = async () => {
       try {
-        const campaignSlug = consumeCampaignSlug();
+        const campaignSlug = getPendingCampaignSlug();
         const response = await authApi.verifyEmail(token, campaignSlug);
+        consumeCampaignSlug();
         // Save tokens and log user in
         tokenStorage.setTokens(response.access_token, response.refresh_token);
         setTokens(response.access_token, response.refresh_token);