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/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",