feat: enhance admin user detail with campaign, panel data, node usage

- Add campaign card and referrals list to info tab
- Add panel config/links, live traffic, connection info to subscription tab
- Add node usage bars with 7/14/30 day period selector
- Add getPanelInfo/getNodeUsage API methods and types
- Add 18 new i18n keys across 4 languages

src/locales/en.json

@@ -1852,6 +1852,24 @@
         "lastActivity": "Last activity",
         "totalSpent": "Total spent",
         "purchases": "Purchases",
+        "campaign": "Advertising campaign",
+        "referralsList": "Referrals list",
+        "referralEarnings": "Referral earnings",
+        "noReferrals": "No referrals",
+        "panelConfig": "Panel configuration",
+        "trojanPassword": "Trojan password",
+        "vlessUuid": "VLESS UUID",
+        "ssPassword": "SS password",
+        "subscriptionUrl": "Subscription URL",
+        "happLink": "HAPP link",
+        "firstConnected": "First connected",
+        "lastOnline": "Last online",
+        "lastNode": "Last node",
+        "liveTraffic": "Current traffic",
+        "lifetime": "Lifetime",
+        "nodeUsage": "Node usage",
+        "copied": "Copied",
+        "panelNotFound": "User not found in panel",
         "referral": {
           "title": "Referral program",
           "referrals": "Referrals",

src/locales/fa.json

@@ -1555,6 +1555,24 @@
         "lastActivity": "آخرین فعالیت",
         "totalSpent": "کل هزینه",
         "purchases": "خریدها",
+        "campaign": "کمپین تبلیغاتی",
+        "referralsList": "لیست ارجاعات",
+        "referralEarnings": "درآمد ارجاع",
+        "noReferrals": "بدون ارجاع",
+        "panelConfig": "پیکربندی پنل",
+        "trojanPassword": "رمز Trojan",
+        "vlessUuid": "VLESS UUID",
+        "ssPassword": "رمز SS",
+        "subscriptionUrl": "لینک اشتراک",
+        "happLink": "لینک HAPP",
+        "firstConnected": "اولین اتصال",
+        "lastOnline": "آخرین آنلاین",
+        "lastNode": "آخرین نود",
+        "liveTraffic": "ترافیک فعلی",
+        "lifetime": "کل",
+        "nodeUsage": "مصرف نودها",
+        "copied": "کپی شد",
+        "panelNotFound": "کاربر در پنل یافت نشد",
         "referral": {
           "title": "برنامه ارجاع",
           "referrals": "ارجاعات",

src/locales/ru.json

@@ -2379,6 +2379,23 @@
         "lastActivity": "Последняя активность",
         "totalSpent": "Всего потрачено",
         "purchases": "Покупок",
+        "campaign": "Рекламная кампания",
+        "referralsList": "Список рефералов",
+        "noReferrals": "Нет рефералов",
+        "panelConfig": "Конфигурация панели",
+        "trojanPassword": "Trojan пароль",
+        "vlessUuid": "VLESS UUID",
+        "ssPassword": "SS пароль",
+        "subscriptionUrl": "Ссылка подписки",
+        "happLink": "HAPP ссылка",
+        "firstConnected": "Первое подключение",
+        "lastOnline": "Последний онлайн",
+        "lastNode": "Последняя нода",
+        "liveTraffic": "Текущий трафик",
+        "lifetime": "За всё время",
+        "nodeUsage": "Расход по нодам",
+        "copied": "Скопировано",
+        "panelNotFound": "Пользователь не найден в панели",
         "referral": {
           "title": "Реферальная программа",
           "referrals": "Рефералов",

src/locales/zh.json

@@ -1554,6 +1554,24 @@
         "lastActivity": "最后活跃",
         "totalSpent": "总消费",
         "purchases": "购买次数",
+        "campaign": "广告活动",
+        "referralsList": "推荐列表",
+        "referralEarnings": "推荐收入",
+        "noReferrals": "暂无推荐",
+        "panelConfig": "面板配置",
+        "trojanPassword": "Trojan 密码",
+        "vlessUuid": "VLESS UUID",
+        "ssPassword": "SS 密码",
+        "subscriptionUrl": "订阅链接",
+        "happLink": "HAPP 链接",
+        "firstConnected": "首次连接",
+        "lastOnline": "最后在线",
+        "lastNode": "最后节点",
+        "liveTraffic": "当前流量",
+        "lifetime": "累计",
+        "nodeUsage": "节点用量",
+        "copied": "已复制",
+        "panelNotFound": "面板中未找到用户",
         "referral": {
           "title": "推荐计划",
           "referrals": "推荐人数",