feat: редизайн страницы платежей в админке — поиск, фильтры, статистика

Поиск по инвойсу/клиенту, фильтры по статусу/периоду/методу, карточки статистики,
кастомный диапазон дат, обработка ошибок, локализация на 4 языка.

src/locales/en.json

@@ -1286,18 +1286,40 @@
       "previewNotAvailable": "Preview not available"
     },
     "payments": {
-      "title": "Payment verification",
-      "description": "Pending payments in the last 24 hours",
+      "title": "Payments",
+      "description": "Search and manage payments",
+      "searchPlaceholder": "Search: invoice, TG ID, @username, email...",
+      "searchHint": "Examples: SP-78291, @username, 123456789, user@mail.ru",
+      "searchResults": "Results for: {{query}} — found {{count}}",
+      "resetSearch": "Reset",
+      "statusAll": "All",
+      "statusPending": "Pending",
+      "statusPaid": "Paid",
+      "statusCancelled": "Cancelled",
+      "period24h": "24h",
+      "period7d": "7d",
+      "period30d": "30d",
+      "periodAll": "All",
+      "periodCustom": "Range",
+      "dateFrom": "From",
+      "dateTo": "To",
+      "applyDate": "Apply",
+      "allMethods": "All methods",
+      "totalCount": "Total",
+      "pendingCount": "Pending",
+      "paidCount": "Paid",
+      "cancelledCount": "Cancelled",
       "totalPending": "Total pending",
       "filterByMethod": "Filter by method",
-      "noPayments": "No pending payments",
+      "noPayments": "No payments found",
       "paid": "Paid",
       "user": "User",
       "openLink": "Open link",
       "checkStatus": "Check status",
       "checking": "Checking...",
-      "prev": "Previous",
-      "next": "Next"
+      "prev": "Prev",
+      "next": "Next",
+      "checkError": "Status check failed"
     },
     "paymentMethods": {
       "title": "Payment Methods",