feat: admin bulk actions page with TanStack Table

Full-featured admin page for mass operations on users:

- TanStack Table with checkbox selection (select all / individual)
- Server-side pagination, search, and filters (status, tariff, promo group)
- Columns: user, subscription status, tariff, balance, days left, promo group
- Floating glass-effect action bar with 7 bulk operations:
  extend subscription, deactivate, activate, change tariff,
  add traffic, add balance, assign promo group
- Action modal dialogs with input fields, loading state, result summary
- Responsive design for desktop, mobile, and Telegram Mini App
- Full i18n support (ru, en)
- Dark theme with accent highlights and status color badges

src/App.tsx

@@ -123,6 +123,7 @@ const AdminRemnawave = lazyWithRetry(() => import('./pages/AdminRemnawave'));
 const AdminRemnawaveSquadDetail = lazyWithRetry(() => import('./pages/AdminRemnawaveSquadDetail'));
 const AdminEmailTemplates = lazyWithRetry(() => import('./pages/AdminEmailTemplates'));
 const AdminTrafficUsage = lazyWithRetry(() => import('./pages/AdminTrafficUsage'));
+const AdminBulkActions = lazyWithRetry(() => import('./pages/AdminBulkActions'));
 const AdminSalesStats = lazyWithRetry(() => import('./pages/AdminSalesStats'));
 const AdminUpdates = lazyWithRetry(() => import('./pages/AdminUpdates'));
 const AdminUserDetail = lazyWithRetry(() => import('./pages/AdminUserDetail'));
@@ -966,6 +967,16 @@ function App() {
             </PermissionRoute>
           }
         />
+        <Route
+          path="/admin/bulk-actions"
+          element={
+            <PermissionRoute permission="users:read">
+              <LazyPage>
+                <AdminBulkActions />
+              </LazyPage>
+            </PermissionRoute>
+          }
+        />
         <Route
           path="/admin/payments"
           element={

src/api/adminBulkActions.ts

@@ -0,0 +1,42 @@
+import apiClient from './client';
+
+export type BulkActionType =
+  | 'extend'
+  | 'cancel'
+  | 'activate'
+  | 'change_tariff'
+  | 'add_traffic'
+  | 'add_balance'
+  | 'assign_promo_group';
+
+export interface BulkActionRequest {
+  action: BulkActionType;
+  user_ids: number[];
+  params: BulkActionParams;
+}
+
+export interface BulkActionParams {
+  days?: number;
+  tariff_id?: number;
+  traffic_gb?: number;
+  balance_kopeks?: number;
+  promo_group_id?: number | null;
+}
+
+export interface BulkActionResult {
+  success: boolean;
+  total: number;
+  success_count: number;
+  error_count: number;
+  errors: Array<{
+    user_id: number;
+    error: string;
+  }>;
+}
+
+export const adminBulkActionsApi = {
+  execute: async (data: BulkActionRequest): Promise<BulkActionResult> => {
+    const response = await apiClient.post('/cabinet/admin/bulk/execute', data);
+    return response.data;
+  },
+};

src/locales/en.json

@@ -1125,7 +1125,8 @@
       "salesStats": "Sales Statistics",
       "landings": "Landings",
       "referralNetwork": "Referral Network",
-      "news": "News"
+      "news": "News",
+      "bulkActions": "Bulk Actions"
     },
     "panel": {
       "title": "Admin Panel",
@@ -2021,6 +2022,62 @@
         "telegramOidcClientSecret": "Client Secret"
       }
     },
+    "bulkActions": {
+      "title": "Bulk Actions",
+      "subtitle": "User management",
+      "selectedCount": "Selected: {{count}}",
+      "selectAll": "Select all",
+      "deselectAll": "Deselect all",
+      "noResults": "No users found",
+      "actions": {
+        "extend": "Extend subscription",
+        "cancel": "Deactivate subscriptions",
+        "activate": "Activate subscriptions",
+        "changeTariff": "Change tariff",
+        "addTraffic": "Add traffic",
+        "addBalance": "Add balance",
+        "assignPromoGroup": "Assign promo group"
+      },
+      "params": {
+        "days": "Number of days",
+        "tariff": "Select tariff",
+        "trafficGb": "Traffic amount (GB)",
+        "balanceRub": "Amount (RUB)",
+        "promoGroup": "Promo group",
+        "removePromoGroup": "Remove promo group"
+      },
+      "confirm": "Apply",
+      "cancel": "Cancel",
+      "executing": "Executing...",
+      "complete": "Complete",
+      "successCount": "Succeeded: {{count}}",
+      "errorCount": "Errors: {{count}}",
+      "filters": {
+        "search": "Search by ID, username, email",
+        "status": "Subscription status",
+        "tariff": "Tariff",
+        "promoGroup": "Promo group",
+        "allStatuses": "All statuses",
+        "allTariffs": "All tariffs",
+        "allGroups": "All groups"
+      },
+      "statuses": {
+        "active": "Active",
+        "expired": "Expired",
+        "trial": "Trial",
+        "limited": "Limited",
+        "disabled": "Disabled"
+      },
+      "columns": {
+        "user": "User",
+        "status": "Status",
+        "tariff": "Tariff",
+        "balance": "Balance",
+        "daysRemaining": "Days",
+        "promoGroup": "Group",
+        "spent": "Spent"
+      }
+    },
     "theme": {
       "accentColor": "Accent color",
       "customizeColors": "Customize colors",

src/locales/ru.json

@@ -1146,7 +1146,8 @@
       "salesStats": "Статистика продаж",
       "landings": "Лендинги",
       "referralNetwork": "Реферальная сеть",
-      "news": "Новости"
+      "news": "Новости",
+      "bulkActions": "Массовые действия"
     },
     "panel": {
       "title": "Панель администратора",
@@ -3769,6 +3770,62 @@
       "users": "Пользователи",
       "security": "Безопасность"
     },
+    "bulkActions": {
+      "title": "Массовые действия",
+      "subtitle": "Управление пользователями",
+      "selectedCount": "Выбрано: {{count}}",
+      "selectAll": "Выбрать всех",
+      "deselectAll": "Снять выделение",
+      "noResults": "Пользователи не найдены",
+      "actions": {
+        "extend": "Продлить подписку",
+        "cancel": "Деактивировать подписки",
+        "activate": "Активировать подписки",
+        "changeTariff": "Сменить тариф",
+        "addTraffic": "Начислить трафик",
+        "addBalance": "Начислить баланс",
+        "assignPromoGroup": "Назначить промогруппу"
+      },
+      "params": {
+        "days": "Количество дней",
+        "tariff": "Выберите тариф",
+        "trafficGb": "Объём трафика (ГБ)",
+        "balanceRub": "Сумма (руб.)",
+        "promoGroup": "Промогруппа",
+        "removePromoGroup": "Убрать промогруппу"
+      },
+      "confirm": "Применить",
+      "cancel": "Отмена",
+      "executing": "Выполнение...",
+      "complete": "Выполнено",
+      "successCount": "Успешно: {{count}}",
+      "errorCount": "Ошибок: {{count}}",
+      "filters": {
+        "search": "Поиск по ID, нику, email",
+        "status": "Статус подписки",
+        "tariff": "Тариф",
+        "promoGroup": "Промогруппа",
+        "allStatuses": "Все статусы",
+        "allTariffs": "Все тарифы",
+        "allGroups": "Все группы"
+      },
+      "statuses": {
+        "active": "Активна",
+        "expired": "Истекла",
+        "trial": "Триал",
+        "limited": "Ограничена",
+        "disabled": "Отключена"
+      },
+      "columns": {
+        "user": "Пользователь",
+        "status": "Статус",
+        "tariff": "Тариф",
+        "balance": "Баланс",
+        "daysRemaining": "Дни",
+        "promoGroup": "Группа",
+        "spent": "Потрачено"
+      }
+    },
     "theme": {
       "accentColor": "Акцентный цвет",
       "customizeColors": "Настроить цвета",

src/pages/AdminPanel.tsx

@@ -333,6 +333,12 @@ const icons = {
       <path d="M15 8h-5M15 12h-5" />
     </SvgIcon>
   ),
+  'list-checks': (
+    <SvgIcon>
+      <path d="M10 6h11M10 12h11M10 18h11" />
+      <path d="m3 6 1 1 2-2M3 12l1 1 2-2M3 18l1 1 2-2" />
+    </SvgIcon>
+  ),
   search: (
     <SvgIcon>
       <circle cx="11" cy="11" r="8" />
@@ -412,6 +418,12 @@ const sections: AdminSection[] = [
     gradient: 'linear-gradient(135deg, rgb(var(--color-accent-400)), rgb(var(--color-error-400)))',
     items: [
       { name: 'admin.nav.users', icon: 'users', to: '/admin/users', permission: 'users:read' },
+      {
+        name: 'admin.nav.bulkActions',
+        icon: 'list-checks',
+        to: '/admin/bulk-actions',
+        permission: 'users:read',
+      },
       {
         name: 'admin.nav.tickets',
         icon: 'ticket',