Enhance Telegram bot integration and notification system

- Updated PnvBotUpdateHandler to improve message editing for login and activation requests, providing clearer feedback and removing lingering buttons.
- Modified TelegramNotifier to include an optional button linking to the public site in user notifications.
- Enhanced CloseTicketCommandHandler and ResolveTicketCommandHandler to notify users via Telegram when their support tickets are closed or resolved, improving user engagement.
- Updated ITelegramNotifier interface documentation to reflect the new functionality of including a site link in user notifications.

backend/src/PnvPanel.Api/Telegram/PnvBotUpdateHandler.cs

@@ -188,9 +188,11 @@ public sealed class PnvBotUpdateHandler(
                     : await sender.Send(new RejectTelegramLoginCommand(requestId, fromId), cancellationToken);
 
                 await botClient.AnswerCallbackQuery(callback.Id, result.IsSuccess ? "Готово" : result.Error.Message, cancellationToken: cancellationToken);
-                if (result.IsSuccess && callback.Message is not null)
+                if (callback.Message is not null)
                 {
-                    var statusText = parts[1] == "approve" ? "✅ Вход подтверждён." : "❌ Вход отклонён.";
+                    var statusText = result.IsSuccess
+                        ? (parts[1] == "approve" ? "✅ Вход подтверждён." : "❌ Вход отклонён.")
+                        : $"⚠️ {result.Error.Message}";
                     var text = $"{Escape(callback.Message.Text ?? "")}\n\n{statusText}";
                     await botClient.EditMessageText(
                         chatId.Value, callback.Message.Id, text, parseMode: ParseMode.Html, cancellationToken: cancellationToken);
@@ -211,11 +213,14 @@ public sealed class PnvBotUpdateHandler(
                     : await sender.Send(new RejectActivationCommand(requestId, Reason: null), cancellationToken);
 
                 await botClient.AnswerCallbackQuery(callback.Id, result.IsSuccess ? "Готово" : result.Error.Message, cancellationToken: cancellationToken);
-                if (result.IsSuccess && callback.Message is not null)
+                if (callback.Message is not null)
                 {
                     // Редактируем исходное сообщение с запросом вместо отдельного — иначе кнопки
-                    // «Активировать/Отклонить» остаются висеть под уже обработанным запросом.
-                    var statusText = parts[1] == "approve" ? "✅ Пользователь активирован." : "❌ Запрос отклонён.";
+                    // «Активировать/Отклонить» остаются висеть под уже обработанным запросом (в т.ч.
+                    // если его обработали в другом месте — на сайте или из другого чата).
+                    var statusText = result.IsSuccess
+                        ? (parts[1] == "approve" ? "✅ Пользователь активирован." : "❌ Запрос отклонён.")
+                        : $"⚠️ {result.Error.Message}";
                     var text = $"{Escape(callback.Message.Text ?? "")}\n\n{statusText}";
                     await botClient.EditMessageText(
                         chatId.Value, callback.Message.Id, text, parseMode: ParseMode.Html, cancellationToken: cancellationToken);
@@ -236,9 +241,11 @@ public sealed class PnvBotUpdateHandler(
                     : await sender.Send(new RejectRoleRequestCommand(requestId, Reason: null), cancellationToken);
 
                 await botClient.AnswerCallbackQuery(callback.Id, result.IsSuccess ? "Готово" : result.Error.Message, cancellationToken: cancellationToken);
-                if (result.IsSuccess && callback.Message is not null)
+                if (callback.Message is not null)
                 {
-                    var statusText = parts[1] == "approve" ? "✅ Заявка одобрена, роль выдана." : "❌ Заявка отклонена.";
+                    var statusText = result.IsSuccess
+                        ? (parts[1] == "approve" ? "✅ Заявка одобрена, роль выдана." : "❌ Заявка отклонена.")
+                        : $"⚠️ {result.Error.Message}";
                     var text = $"{Escape(callback.Message.Text ?? "")}\n\n{statusText}";
                     await botClient.EditMessageText(
                         chatId.Value, callback.Message.Id, text, parseMode: ParseMode.Html, cancellationToken: cancellationToken);

backend/src/PnvPanel.Api/Telegram/TelegramNotifier.cs

@@ -106,9 +106,13 @@ internal sealed class TelegramNotifier(ITelegramBotClient botClient, IIdentitySe
         if (!link.IsLinked || link.TelegramUserId is not { } telegramUserId)
             return;
 
+        InlineKeyboardMarkup? keyboard = null;
+        if (!string.IsNullOrWhiteSpace(options.Value.PublicSiteUrl))
+            keyboard = new InlineKeyboardMarkup(new[] { InlineKeyboardButton.WithUrl("🌐 Открыть на сайте", options.Value.PublicSiteUrl) });
+
         try
         {
-            await botClient.SendMessage(telegramUserId, message, cancellationToken: cancellationToken);
+            await botClient.SendMessage(telegramUserId, message, replyMarkup: keyboard, cancellationToken: cancellationToken);
         }
         catch
         {

backend/src/PnvPanel.Application/Admin/Support/CloseTicketCommandHandler.cs

@@ -9,7 +9,8 @@ using PnvPanel.Domain.Support;
 
 namespace PnvPanel.Application.Admin.Support;
 
-public sealed class CloseTicketCommandHandler(IAppDbContext dbContext, IRealtimeNotifier notifier, ICurrentUser currentUser)
+public sealed class CloseTicketCommandHandler(
+    IAppDbContext dbContext, IRealtimeNotifier notifier, ITelegramNotifier telegramNotifier, ICurrentUser currentUser)
     : ICommandHandler<CloseTicketCommand, Result>
 {
     public async Task<Result> Handle(CloseTicketCommand command, CancellationToken cancellationToken)
@@ -30,6 +31,7 @@ public sealed class CloseTicketCommandHandler(IAppDbContext dbContext, IRealtime
             adminId, "TicketClosed", "SupportTicket", ticket.Id.ToString(), metadata: null, AuditSource.Web));
 
         await notifier.NotifyTicketUpdatedAsync(ticket.Id, ticket.UserId, cancellationToken);
+        await telegramNotifier.NotifyUserAsync(ticket.UserId, "🔒 Ваше обращение закрыто.", cancellationToken);
 
         return Result.Success();
     }

backend/src/PnvPanel.Application/Admin/Support/ResolveTicketCommandHandler.cs

@@ -9,7 +9,8 @@ using PnvPanel.Domain.Support;
 
 namespace PnvPanel.Application.Admin.Support;
 
-public sealed class ResolveTicketCommandHandler(IAppDbContext dbContext, IRealtimeNotifier notifier, ICurrentUser currentUser)
+public sealed class ResolveTicketCommandHandler(
+    IAppDbContext dbContext, IRealtimeNotifier notifier, ITelegramNotifier telegramNotifier, ICurrentUser currentUser)
     : ICommandHandler<ResolveTicketCommand, Result>
 {
     public async Task<Result> Handle(ResolveTicketCommand command, CancellationToken cancellationToken)
@@ -30,6 +31,7 @@ public sealed class ResolveTicketCommandHandler(IAppDbContext dbContext, IRealti
             adminId, "TicketResolved", "SupportTicket", ticket.Id.ToString(), metadata: null, AuditSource.Web));
 
         await notifier.NotifyTicketUpdatedAsync(ticket.Id, ticket.UserId, cancellationToken);
+        await telegramNotifier.NotifyUserAsync(ticket.UserId, "✅ Ваше обращение решено.", cancellationToken);
 
         return Result.Success();
     }

backend/src/PnvPanel.Application/Common/Interfaces/ITelegramNotifier.cs

@@ -10,7 +10,8 @@ public interface ITelegramNotifier
     Task NotifyAdminsActivationRequestedAsync(
         Guid requestId, string userName, string? comment, CancellationToken cancellationToken);
 
-    /// <summary>Личное сообщение пользователю, если у него привязан Telegram (иначе no-op).</summary>
+    /// <summary>Личное сообщение пользователю, если у него привязан Telegram (иначе no-op).
+    /// Если задан PublicSiteUrl — добавляет кнопку-ссылку на сайт.</summary>
     Task NotifyUserAsync(Guid userId, string message, CancellationToken cancellationToken);
 
     /// <summary>Баг-репорт/предложение — только кнопка-ссылка на сайт (переписка и картинки — там),

frontend/src/routes/admin.tsx

@@ -27,13 +27,13 @@ function AdminLayout() {
   return (
     <div className="mx-auto flex w-full max-w-5xl flex-col gap-6 px-6 py-10">
       <h1 className="text-2xl font-semibold tracking-tight">{t('nav.admin')}</h1>
-      <nav className="flex gap-1 overflow-x-auto border-b border-border">
+      <nav className="flex flex-wrap gap-1 border-b border-border">
         {TABS.map((tab) => (
           <Link
             key={tab.to}
             to={tab.to}
             activeOptions={{ exact: tab.to === '/admin' }}
-            className={cn('shrink-0 whitespace-nowrap px-3 py-2 text-sm text-muted-foreground hover:text-foreground')}
+            className={cn('whitespace-nowrap px-3 py-2 text-sm text-muted-foreground hover:text-foreground')}
             activeProps={{ className: 'border-b-2 border-primary text-foreground font-medium' }}
           >
             {t(`admin.tabs.${tab.key}`)}