feat: send language in payment requests for localized descriptions

- Add language field to balance topup and landing purchase requests
- Cap news article featured image height with max-h-96

Cherry-picked from PR #362 (without favicon change — files don't exist)

src/api/balance.ts

@@ -1,4 +1,5 @@
 import apiClient from './client';
+import i18n from '../i18n';
 import type {
   Balance,
   Transaction,
@@ -54,6 +55,7 @@ export const balanceApi = {
       amount_kopeks: number;
       payment_method: string;
       payment_option?: string;
+      language?: string;
     } = {
       amount_kopeks: amountKopeks,
       payment_method: paymentMethod,
@@ -61,6 +63,7 @@ export const balanceApi = {
     if (paymentOption) {
       payload.payment_option = paymentOption;
     }
+    payload.language = i18n.language || 'ru';
     const response = await apiClient.post('/cabinet/balance/topup', payload);
     return response.data;
   },

src/api/landings.ts

@@ -101,6 +101,7 @@ export interface PurchaseRequest {
   gift_recipient_type?: 'email' | 'telegram';
   gift_recipient_value?: string;
   gift_message?: string;
+  language?: string;
 }
 
 export interface PurchaseResponse {

src/pages/NewsArticle.tsx

@@ -408,7 +408,7 @@ export default function NewsArticlePage() {
           <img
             src={article.featured_image_url}
             alt={article.title}
-            className="h-auto w-full rounded-xl object-cover"
+            className="max-h-96 w-full rounded-xl object-cover"
             loading="eager"
             fetchPriority="high"
           />

src/pages/QuickPurchase.tsx

@@ -927,6 +927,7 @@ export default function QuickPurchase() {
       contact_type: detectContactType(contactValue),
       contact_value: contactValue.trim(),
       payment_method: paymentMethod,
+      language: i18n.language,
       is_gift: isGift,
     };