feat: add admin traffic packages and device limit management UI

Add device limit +/- stepper, traffic packages display with inline
delete, add traffic dropdown from tariff config, translations for
ru/en/zh/fa.

src/api/adminUsers.ts

@@ -2,6 +2,15 @@ import apiClient from './client';
 
 // ============ Types ============
 
+export interface TrafficPurchaseInfo {
+  id: number;
+  traffic_gb: number;
+  expires_at: string;
+  created_at: string;
+  days_remaining: number;
+  is_expired: boolean;
+}
+
 export interface UserSubscriptionInfo {
   id: number;
   status: string;
@@ -16,6 +25,8 @@ export interface UserSubscriptionInfo {
   autopay_enabled: boolean;
   is_active: boolean;
   days_remaining: number;
+  purchased_traffic_gb: number;
+  traffic_purchases: TrafficPurchaseInfo[];
 }
 
 export interface UserPromoGroupInfo {
@@ -187,6 +198,11 @@ export interface UserAvailableTariff {
   price_per_day_kopeks: number;
   min_days: number;
   max_days: number;
+  device_price_kopeks: number | null;
+  max_device_limit: number | null;
+  traffic_topup_enabled: boolean;
+  traffic_topup_packages: Record<string, number>;
+  max_topup_traffic_gb: number;
   is_available: boolean;
   requires_promo_group: boolean;
 }
@@ -277,7 +293,10 @@ export interface UpdateSubscriptionRequest {
     | 'toggle_autopay'
     | 'cancel'
     | 'activate'
-    | 'create';
+    | 'create'
+    | 'add_traffic'
+    | 'remove_traffic'
+    | 'set_device_limit';
   days?: number;
   end_date?: string;
   tariff_id?: number;
@@ -286,6 +305,8 @@ export interface UpdateSubscriptionRequest {
   autopay_enabled?: boolean;
   is_trial?: boolean;
   device_limit?: number;
+  traffic_gb?: number;
+  traffic_purchase_id?: number;
 }
 
 export interface UpdateSubscriptionResponse {

src/locales/en.json

@@ -1967,7 +1967,17 @@
           "unavailable": "(unavailable)",
           "noActive": "No active subscription",
           "create": "Create subscription",
-          "creating": "Creating..."
+          "creating": "Creating...",
+          "trafficPackages": "Traffic packages",
+          "addTraffic": "Add traffic",
+          "selectPackage": "Select package",
+          "addButton": "Add",
+          "addTrafficNote": "Admin: free, valid 30 days",
+          "trafficRemoved": "Traffic package removed",
+          "trafficAdded": "Traffic package added",
+          "expired": "expired",
+          "daysLeft": "d left",
+          "deviceLimitUpdated": "Device limit updated"
         },
         "balance": {
           "current": "Current balance",

src/locales/fa.json

@@ -1666,7 +1666,17 @@
           "unavailable": "(غیرقابل دسترس)",
           "noActive": "اشتراک فعالی وجود ندارد",
           "create": "ایجاد اشتراک",
-          "creating": "در حال ایجاد..."
+          "creating": "در حال ایجاد...",
+          "trafficPackages": "بسته‌های ترافیک",
+          "addTraffic": "افزودن ترافیک",
+          "selectPackage": "انتخاب بسته",
+          "addButton": "افزودن",
+          "addTrafficNote": "مدیر: رایگان، ۳۰ روز اعتبار",
+          "trafficRemoved": "بسته ترافیک حذف شد",
+          "trafficAdded": "بسته ترافیک اضافه شد",
+          "expired": "منقضی شده",
+          "daysLeft": "روز باقیمانده",
+          "deviceLimitUpdated": "محدودیت دستگاه به‌روز شد"
         },
         "balance": {
           "current": "موجودی فعلی",

src/locales/ru.json

@@ -2493,7 +2493,17 @@
           "unavailable": "(недоступен)",
           "noActive": "Нет активной подписки",
           "create": "Создать подписку",
-          "creating": "Создание..."
+          "creating": "Создание...",
+          "trafficPackages": "Пакеты трафика",
+          "addTraffic": "Добавить трафик",
+          "selectPackage": "Выберите пакет",
+          "addButton": "Добавить",
+          "addTrafficNote": "Админ: бесплатно, действует 30 дней",
+          "trafficRemoved": "Пакет трафика удалён",
+          "trafficAdded": "Пакет трафика добавлен",
+          "expired": "истёк",
+          "daysLeft": "дн. осталось",
+          "deviceLimitUpdated": "Лимит устройств обновлён"
         },
         "balance": {
           "current": "Текущий баланс",

src/locales/zh.json

@@ -1665,7 +1665,17 @@
           "unavailable": "（不可用）",
           "noActive": "无活跃订阅",
           "create": "创建订阅",
-          "creating": "创建中..."
+          "creating": "创建中...",
+          "trafficPackages": "流量包",
+          "addTraffic": "添加流量",
+          "selectPackage": "选择套餐",
+          "addButton": "添加",
+          "addTrafficNote": "管理员：免费，有效期30天",
+          "trafficRemoved": "流量包已删除",
+          "trafficAdded": "流量包已添加",
+          "expired": "已过期",
+          "daysLeft": "天剩余",
+          "deviceLimitUpdated": "设备限制已更新"
         },
         "balance": {
           "current": "当前余额",

src/pages/AdminUserDetail.tsx

@@ -195,6 +195,9 @@ export default function AdminUserDetail() {
   const [offerValidHours, setOfferValidHours] = useState<number | ''>(24);
   const [offerSending, setOfferSending] = useState(false);
 
+  // Traffic packages
+  const [selectedTrafficGb, setSelectedTrafficGb] = useState<string>('');
+
   // Devices
   const [devices, setDevices] = useState<
     { hwid: string; platform: string; device_model: string; created_at: string | null }[]
@@ -544,6 +547,57 @@ export default function AdminUserDetail() {
     }
   };
 
+  const handleAddTraffic = async (gb: number) => {
+    if (!userId) return;
+    setActionLoading(true);
+    try {
+      await adminUsersApi.updateSubscription(userId, { action: 'add_traffic', traffic_gb: gb });
+      notify.success(t('admin.users.detail.subscription.trafficAdded'));
+      setSelectedTrafficGb('');
+      await loadUser();
+    } catch {
+      notify.error(t('admin.users.userActions.error'), t('common.error'));
+    } finally {
+      setActionLoading(false);
+    }
+  };
+
+  const handleRemoveTraffic = async (purchaseId: number) => {
+    if (!userId) return;
+    setActionLoading(true);
+    try {
+      await adminUsersApi.updateSubscription(userId, {
+        action: 'remove_traffic',
+        traffic_purchase_id: purchaseId,
+      });
+      notify.success(t('admin.users.detail.subscription.trafficRemoved'));
+      await loadUser();
+    } catch {
+      notify.error(t('admin.users.userActions.error'), t('common.error'));
+    } finally {
+      setActionLoading(false);
+    }
+  };
+
+  const handleSetDeviceLimit = async (newLimit: number) => {
+    if (!userId) return;
+    setActionLoading(true);
+    try {
+      await adminUsersApi.updateSubscription(userId, {
+        action: 'set_device_limit',
+        device_limit: newLimit,
+      });
+      notify.success(t('admin.users.detail.subscription.deviceLimitUpdated'));
+      await loadUser();
+    } catch {
+      notify.error(t('admin.users.userActions.error'), t('common.error'));
+    } finally {
+      setActionLoading(false);
+    }
+  };
+
+  const currentTariff = tariffs.find((t) => t.id === user?.subscription?.tariff_id) || null;
+
   const handleChangePromoGroup = async (groupId: number | null) => {
     if (!userId) return;
     setActionLoading(true);
@@ -1166,11 +1220,136 @@ export default function AdminUserDetail() {
                       <div className="text-xs text-dark-500">
                         {t('admin.users.detail.subscription.devices')}
                       </div>
-                      <div className="text-dark-100">{user.subscription.device_limit}</div>
+                      <div className="flex items-center gap-2">
+                        <button
+                          onClick={() => handleSetDeviceLimit(user.subscription!.device_limit - 1)}
+                          disabled={actionLoading || user.subscription.device_limit <= 1}
+                          className="flex h-6 w-6 items-center justify-center rounded-md bg-dark-700 text-dark-300 transition-colors hover:bg-dark-600 disabled:opacity-30"
+                        >
+                          <MinusIcon />
+                        </button>
+                        <span className="min-w-[2ch] text-center text-dark-100">
+                          {user.subscription.device_limit}
+                        </span>
+                        <button
+                          onClick={() => handleSetDeviceLimit(user.subscription!.device_limit + 1)}
+                          disabled={
+                            actionLoading ||
+                            (currentTariff?.max_device_limit != null &&
+                              user.subscription.device_limit >= currentTariff.max_device_limit)
+                          }
+                          className="flex h-6 w-6 items-center justify-center rounded-md bg-dark-700 text-dark-300 transition-colors hover:bg-dark-600 disabled:opacity-30"
+                        >
+                          <PlusIcon />
+                        </button>
+                      </div>
                     </div>
                   </div>
                 </div>
 
+                {/* Traffic Packages */}
+                {user.subscription.traffic_purchases &&
+                  user.subscription.traffic_purchases.length > 0 && (
+                    <div className="rounded-xl bg-dark-800/50 p-4">
+                      <div className="mb-3 flex items-center justify-between">
+                        <span className="text-sm font-medium text-dark-200">
+                          {t('admin.users.detail.subscription.trafficPackages')}
+                          {user.subscription.purchased_traffic_gb > 0 && (
+                            <span className="ml-2 text-xs text-dark-400">
+                              ({user.subscription.purchased_traffic_gb} {t('common.units.gb')})
+                            </span>
+                          )}
+                        </span>
+                      </div>
+                      <div className="space-y-2">
+                        {user.subscription.traffic_purchases.map((tp) => (
+                          <div
+                            key={tp.id}
+                            className={`flex items-center justify-between rounded-lg px-3 py-2 ${
+                              tp.is_expired ? 'bg-dark-700/30 opacity-60' : 'bg-dark-700/50'
+                            }`}
+                          >
+                            <div className="min-w-0 flex-1">
+                              <div className="flex items-center gap-2 text-sm text-dark-200">
+                                <span className="font-medium">
+                                  {tp.traffic_gb} {t('common.units.gb')}
+                                </span>
+                                {tp.is_expired ? (
+                                  <span className="rounded-full bg-error-500/20 px-1.5 py-0.5 text-[10px] text-error-400">
+                                    {t('admin.users.detail.subscription.expired')}
+                                  </span>
+                                ) : (
+                                  <span className="text-xs text-dark-400">
+                                    {tp.days_remaining}{' '}
+                                    {t('admin.users.detail.subscription.daysLeft')}
+                                  </span>
+                                )}
+                              </div>
+                            </div>
+                            {!tp.is_expired && (
+                              <button
+                                onClick={() =>
+                                  handleInlineConfirm(`removeTraffic_${tp.id}`, () =>
+                                    handleRemoveTraffic(tp.id),
+                                  )
+                                }
+                                disabled={actionLoading}
+                                className={`ml-2 shrink-0 rounded-lg px-2 py-1 text-xs transition-all disabled:opacity-50 ${
+                                  confirmingAction === `removeTraffic_${tp.id}`
+                                    ? 'bg-error-500 text-white'
+                                    : 'text-dark-500 hover:bg-error-500/15 hover:text-error-400'
+                                }`}
+                              >
+                                {confirmingAction === `removeTraffic_${tp.id}` ? '?' : '\u00D7'}
+                              </button>
+                            )}
+                          </div>
+                        ))}
+                      </div>
+                    </div>
+                  )}
+
+                {/* Add Traffic */}
+                {currentTariff &&
+                  currentTariff.traffic_topup_enabled &&
+                  Object.keys(currentTariff.traffic_topup_packages).length > 0 && (
+                    <div className="rounded-xl bg-dark-800/50 p-4">
+                      <div className="mb-3 text-sm font-medium text-dark-200">
+                        {t('admin.users.detail.subscription.addTraffic')}
+                      </div>
+                      <div className="flex gap-2">
+                        <select
+                          value={selectedTrafficGb}
+                          onChange={(e) => setSelectedTrafficGb(e.target.value)}
+                          className="input flex-1"
+                        >
+                          <option value="">
+                            {t('admin.users.detail.subscription.selectPackage')}
+                          </option>
+                          {Object.entries(currentTariff.traffic_topup_packages)
+                            .sort(([a], [b]) => Number(a) - Number(b))
+                            .map(([gb]) => (
+                              <option key={gb} value={gb}>
+                                {gb} {t('common.units.gb')}
+                              </option>
+                            ))}
+                        </select>
+                        <button
+                          onClick={() =>
+                            selectedTrafficGb && handleAddTraffic(Number(selectedTrafficGb))
+                          }
+                          disabled={actionLoading || !selectedTrafficGb}
+                          className="shrink-0 rounded-lg bg-accent-500 px-4 py-2 text-sm text-white transition-colors hover:bg-accent-600 disabled:opacity-50"
+                        >
+                          {t('admin.users.detail.subscription.addButton')}
+                        </button>
+                      </div>
+                      <div className="mt-2 text-xs text-dark-500">
+                        {t('admin.users.detail.subscription.addTrafficNote')}
+                      </div>
+                    </div>
+                  )}
+
                 {/* Actions */}
                 <div className="rounded-xl bg-dark-800/50 p-4">
                   <div className="mb-3 font-medium text-dark-200">