Enhance Docker setup and user notification features

- Updated docker-compose.yml to include environment variables and health checks for the app service.
- Modified Dockerfile to install curl for health checks and adjusted the build process for backend services.
- Improved user notification handling in activation, blocking, and config revocation commands by integrating Telegram notifications.
- Added new test cases to validate the updated command handlers and Telegram notifier functionality.
- Enhanced documentation to reflect the new Telegram bot features and user management improvements.

backend/src/PnvPanel.Application/Admin/Users/BlockUserCommandHandler.cs

@@ -10,7 +10,7 @@ namespace PnvPanel.Application.Admin.Users;
 /// <summary>Блокировка гасит все активные конфиги в 3x-ui (см. architecture.md).</summary>
 public sealed class BlockUserCommandHandler(
     IAppDbContext dbContext, IIdentityService identityService, IXuiPanelGateway gateway,
-    IRealtimeNotifier notifier, ICurrentUser currentUser)
+    IRealtimeNotifier notifier, ITelegramNotifier telegramNotifier, ICurrentUser currentUser)
     : ICommandHandler<BlockUserCommand, Result>
 {
     public async Task<Result> Handle(BlockUserCommand command, CancellationToken cancellationToken)
@@ -44,6 +44,8 @@ public sealed class BlockUserCommandHandler(
         dbContext.AuditLogs.Add(AuditLog.Create(
             currentUser.UserId, "UserBlocked", "User", command.UserId.ToString(), metadata: null, AuditSource.Web));
 
+        await telegramNotifier.NotifyUserAsync(command.UserId, "⛔ Ваш аккаунт заблокирован администратором.", cancellationToken);
+
         return Result.Success();
     }
 }