feat: show VPN connection info and subscription request history on admin user detail

- Load panelInfo eagerly on page load (not just on subscription tab)
- Add VPN connection card to info tab: last/first connection, online status indicator, last node
- Rename "Last activity" to "Bot activity" to distinguish from VPN connection
- Show cabinet_last_login field that was never rendered
- Add collapsible subscription request history section in subscription tab with paginated table
- Add subscription request history API types and method
- Add i18n keys for all 4 locales (ru, en, zh, fa)

src/locales/fa.json

@@ -2579,6 +2579,19 @@
         "language": "زبان",
         "registration": "ثبت‌نام",
         "lastActivity": "آخرین فعالیت",
+        "botActivity": "فعالیت در ربات",
+        "cabinetLastLogin": "آخرین ورود به کابینت",
+        "vpnConnection": "اتصال VPN",
+        "lastConnection": "آخرین اتصال",
+        "firstConnection": "اولین اتصال",
+        "online": "آنلاین",
+        "requestHistory": "تاریخچه درخواست‌های اشتراک",
+        "requestHistoryTotal": "کل درخواست‌ها",
+        "requestAt": "تاریخ",
+        "requestIp": "آدرس IP",
+        "requestUserAgent": "دستگاه",
+        "loadMore": "نمایش بیشتر",
+        "noRequests": "بدون درخواست",
         "totalSpent": "کل هزینه",
         "purchases": "خریدها",
         "campaign": "کمپین تبلیغاتی",