feat: add admin updates page with release history

Shows bot and cabinet releases with version badges,
changelogs, and update detection via __APP_VERSION__.

src/locales/en.json

@@ -762,7 +762,8 @@
       "promoOffers": "Promo Offers",
       "promocodes": "Promo Codes",
       "promoGroups": "Discount Groups",
-      "trafficUsage": "Traffic Usage"
+      "trafficUsage": "Traffic Usage",
+      "updates": "Updates"
     },
     "panel": {
       "title": "Admin Panel",
@@ -785,7 +786,8 @@
       "promoOffersDesc": "Personal discounts",
       "promocodesDesc": "Manage promo codes",
       "promoGroupsDesc": "Discount groups for users",
-      "trafficUsageDesc": "Per-user traffic by nodes"
+      "trafficUsageDesc": "Per-user traffic by nodes",
+      "updatesDesc": "Bot & cabinet versions"
     },
     "trafficUsage": {
       "title": "Traffic Usage",
@@ -2113,6 +2115,19 @@
       }
     }
   },
+  "adminUpdates": {
+    "title": "Updates",
+    "subtitle": "Bot and cabinet release history",
+    "bot": "Bot",
+    "cabinet": "Cabinet",
+    "currentVersion": "Current version",
+    "upToDate": "Up to date",
+    "updateAvailable": "Update available",
+    "published": "Published",
+    "prerelease": "Pre-release",
+    "refresh": "Check for updates",
+    "noReleases": "No release data"
+  },
   "adminDashboard": {
     "title": "Statistics Dashboard",
     "subtitle": "Real-time system overview",

src/locales/fa.json

@@ -643,7 +643,8 @@
       "promoGroups": "گروه‌های تخفیف",
       "remnawave": "RemnaWave",
       "users": "کاربران",
-      "trafficUsage": "مصرف ترافیک"
+      "trafficUsage": "مصرف ترافیک",
+      "updates": "به‌روزرسانی‌ها"
     },
     "panel": {
       "title": "پنل مدیریت",
@@ -666,7 +667,8 @@
       "promoGroupsDesc": "گروه‌های تخفیف برای کاربران",
       "remnawaveDesc": "مدیریت پنل و آمار",
       "usersDesc": "مدیریت کاربران ربات",
-      "trafficUsageDesc": "ترافیک هر کاربر بر اساس نود"
+      "trafficUsageDesc": "ترافیک هر کاربر بر اساس نود",
+      "updatesDesc": "نسخه‌های ربات و کابینت"
     },
     "trafficUsage": {
       "title": "مصرف ترافیک",
@@ -1928,6 +1930,19 @@
       "saturation": "اشباع"
     }
   },
+  "adminUpdates": {
+    "title": "به‌روزرسانی‌ها",
+    "subtitle": "تاریخچه انتشار ربات و کابینت",
+    "bot": "ربات",
+    "cabinet": "کابینت",
+    "currentVersion": "نسخه فعلی",
+    "upToDate": "به‌روز است",
+    "updateAvailable": "به‌روزرسانی موجود",
+    "published": "منتشر شده",
+    "prerelease": "پیش‌انتشار",
+    "refresh": "بررسی به‌روزرسانی",
+    "noReleases": "داده‌ای موجود نیست"
+  },
   "adminDashboard": {
     "title": "پنل آمار",
     "subtitle": "نمای کلی سیستم در لحظه",

src/locales/ru.json

@@ -783,7 +783,8 @@
       "promoOffers": "Промопредложения",
       "promocodes": "Промокоды",
       "promoGroups": "Группы скидок",
-      "trafficUsage": "Расход трафика"
+      "trafficUsage": "Расход трафика",
+      "updates": "Обновления"
     },
     "panel": {
       "title": "Панель администратора",
@@ -806,7 +807,8 @@
       "promoOffersDesc": "Персональные скидки",
       "promocodesDesc": "Управление промокодами",
       "promoGroupsDesc": "Группы скидок для пользователей",
-      "trafficUsageDesc": "Трафик пользователей по нодам"
+      "trafficUsageDesc": "Трафик пользователей по нодам",
+      "updatesDesc": "Версии бота и кабинета"
     },
     "trafficUsage": {
       "title": "Расход трафика",
@@ -2659,6 +2661,19 @@
       "saturation": "Насыщенность"
     }
   },
+  "adminUpdates": {
+    "title": "Обновления",
+    "subtitle": "История релизов бота и кабинета",
+    "bot": "Бот",
+    "cabinet": "Кабинет",
+    "currentVersion": "Текущая версия",
+    "upToDate": "Актуальная версия",
+    "updateAvailable": "Доступно обновление",
+    "published": "Опубликовано",
+    "prerelease": "Предрелиз",
+    "refresh": "Проверить обновления",
+    "noReleases": "Нет данных о релизах"
+  },
   "adminDashboard": {
     "title": "Панель статистики",
     "subtitle": "Обзор системы в реальном времени",

src/locales/zh.json

@@ -643,7 +643,8 @@
       "promoGroups": "折扣组",
       "remnawave": "RemnaWave",
       "users": "用户",
-      "trafficUsage": "流量使用"
+      "trafficUsage": "流量使用",
+      "updates": "更新"
     },
     "panel": {
       "title": "管理面板",
@@ -666,7 +667,8 @@
       "promoGroupsDesc": "用户折扣组",
       "remnawaveDesc": "面板管理和统计",
       "usersDesc": "管理机器人用户",
-      "trafficUsageDesc": "按节点统计用户流量"
+      "trafficUsageDesc": "按节点统计用户流量",
+      "updatesDesc": "机器人和面板版本"
     },
     "trafficUsage": {
       "title": "流量使用",
@@ -1927,6 +1929,19 @@
       }
     }
   },
+  "adminUpdates": {
+    "title": "更新",
+    "subtitle": "机器人和面板发布历史",
+    "bot": "机器人",
+    "cabinet": "面板",
+    "currentVersion": "当前版本",
+    "upToDate": "已是最新",
+    "updateAvailable": "有可用更新",
+    "published": "发布于",
+    "prerelease": "预发布",
+    "refresh": "检查更新",
+    "noReleases": "没有发布数据"
+  },
   "adminDashboard": {
     "title": "统计面板",
     "subtitle": "实时系统概览",