Add Telegram bot integration and enhance user management features

- Introduced Telegram.Bot package for bot functionality.
- Updated user management to include Telegram linking and blocking features.
- Enhanced activation request handling with notifications via Telegram.
- Added new database entities for Telegram link tokens and login requests.
- Implemented traffic synchronization for client stats in the XuiPanelGateway.
- Updated application structure to support new test projects and improved dependency injection for Telegram services.

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

@@ -4,7 +4,13 @@ namespace PnvPanel.Application.Common.Interfaces;
 
 public sealed record AuthenticatedUser(Guid Id, string UserName, string Role);
 
-public sealed record CurrentUserProfile(Guid Id, string UserName, Guid RoleId, string Role, bool IsActivated, int MaxConfigs);
+public sealed record CurrentUserProfile(Guid Id, string UserName, Guid RoleId, string Role, bool IsActivated, bool IsBlocked, int MaxConfigs);
+
+public sealed record UserSummaryDto(Guid Id, string UserName, string Role, bool IsActivated, bool IsBlocked, DateTimeOffset? ActivatedAt);
+
+public sealed record UserStatsDto(int Total, int Activated);
+
+public sealed record TelegramLinkInfo(bool IsLinked, long? TelegramUserId, string? Username);
 
 public interface IIdentityService
 {
@@ -30,4 +36,24 @@ public interface IIdentityService
 
     /// <summary>Для агрегированной подписки /sub/{userToken} (все активные конфиги пользователя).</summary>
     Task<Guid?> FindUserIdBySubscriptionTokenAsync(string token, CancellationToken cancellationToken);
+
+    /// <summary>Блокировка: вход запрещён (см. ValidateCredentialsAsync). Конфиги гасит вызывающая сторона.</summary>
+    Task<Result> BlockUserAsync(Guid userId, CancellationToken cancellationToken);
+
+    Task<Result> UnblockUserAsync(Guid userId, CancellationToken cancellationToken);
+
+    /// <summary>Сброс пароля админом — для пользователей без привязанного Telegram (M7).</summary>
+    Task<Result> ResetPasswordAsync(Guid userId, string newPassword, CancellationToken cancellationToken);
+
+    Task<PagedList<UserSummaryDto>> ListUsersAsync(int page, int pageSize, string? search, CancellationToken cancellationToken);
+
+    Task<UserStatsDto> GetUserStatsAsync(CancellationToken cancellationToken);
+
+    Task<Result> LinkTelegramAsync(Guid userId, long telegramUserId, string? telegramUsername, CancellationToken cancellationToken);
+
+    Task<Result> UnlinkTelegramAsync(Guid userId, CancellationToken cancellationToken);
+
+    Task<Guid?> FindUserIdByTelegramUserIdAsync(long telegramUserId, CancellationToken cancellationToken);
+
+    Task<TelegramLinkInfo> GetTelegramLinkInfoAsync(Guid userId, CancellationToken cancellationToken);
 }