Refactor logging messages for consistency and clarity

- Updated various logging messages across the application to replace Russian text with English equivalents, ensuring consistency in error and information logs.
- Enhanced clarity in log messages related to Telegram bot operations, user management commands, and health check services, improving overall traceability and understanding of application behavior.

backend/src/PnvPanel.Infrastructure/BackgroundJobs/NodeHealthCheckService.cs

@@ -23,7 +23,7 @@ public sealed class NodeHealthCheckService(IServiceScopeFactory scopeFactory, IL
             }
             catch (Exception ex)
             {
-                logger.LogError(ex, "Ошибка health-check нод");
+                logger.LogError(ex, "Node health-check failed");
             }
         }
         while (await timer.WaitForNextTickAsync(stoppingToken));

backend/src/PnvPanel.Infrastructure/BackgroundJobs/TrafficRetentionService.cs

@@ -25,7 +25,7 @@ public sealed class TrafficRetentionService(
             }
             catch (Exception ex)
             {
-                logger.LogError(ex, "Ошибка ретеншна истории трафика");
+                logger.LogError(ex, "Traffic history retention failed");
             }
         }
         while (await timer.WaitForNextTickAsync(stoppingToken));
@@ -40,6 +40,6 @@ public sealed class TrafficRetentionService(
         var deleted = await dbContext.TrafficSamples.Where(s => s.Timestamp < cutoff).ExecuteDeleteAsync(cancellationToken);
 
         if (deleted > 0)
-            logger.LogInformation("Удалено {Count} устаревших записей истории трафика", deleted);
+            logger.LogInformation("Deleted {Count} expired traffic history records", deleted);
     }
 }

backend/src/PnvPanel.Infrastructure/BackgroundJobs/TrafficSyncService.cs

@@ -28,7 +28,7 @@ public sealed class TrafficSyncService(IServiceScopeFactory scopeFactory, ILogge
             }
             catch (Exception ex)
             {
-                logger.LogError(ex, "Ошибка синхронизации трафика");
+                logger.LogError(ex, "Traffic sync failed");
             }
         }
         while (await timer.WaitForNextTickAsync(stoppingToken));

backend/src/PnvPanel.Infrastructure/Identity/DbInitializer.cs

@@ -38,10 +38,10 @@ public sealed class DbInitializer(
         if (!result.Succeeded)
         {
             throw new InvalidOperationException(
-                $"Не удалось создать роль '{name}': {string.Join(", ", result.Errors.Select(e => e.Description))}");
+                $"Failed to create role '{name}': {string.Join(", ", result.Errors.Select(e => e.Description))}");
         }
 
-        logger.LogInformation("Создана системная роль {RoleName}", name);
+        logger.LogInformation("Created system role {RoleName}", name);
     }
 
     private async Task SeedAdminAsync()
@@ -49,7 +49,7 @@ public sealed class DbInitializer(
         var options = adminSeedOptions.Value;
         if (string.IsNullOrWhiteSpace(options.Username) || string.IsNullOrWhiteSpace(options.Password))
         {
-            logger.LogWarning("AdminSeed__Username/AdminSeed__Password не заданы — учётка администратора не создана");
+            logger.LogWarning("AdminSeed__Username/AdminSeed__Password not set — admin account not created");
             return;
         }
 
@@ -68,11 +68,11 @@ public sealed class DbInitializer(
         if (!createResult.Succeeded)
         {
             throw new InvalidOperationException(
-                $"Не удалось создать администратора: {string.Join(", ", createResult.Errors.Select(e => e.Description))}");
+                $"Failed to create admin account: {string.Join(", ", createResult.Errors.Select(e => e.Description))}");
         }
 
         await userManager.AddToRoleAsync(admin, RoleNames.Admin);
-        logger.LogInformation("Создана учётка администратора {Username}", options.Username);
+        logger.LogInformation("Created admin account {Username}", options.Username);
     }
 
     private async Task SeedClientAppsAsync(CancellationToken cancellationToken)
@@ -83,7 +83,7 @@ public sealed class DbInitializer(
         var path = Path.Combine(AppContext.BaseDirectory, "seed", "client-apps.json");
         if (!File.Exists(path))
         {
-            logger.LogWarning("Файл сида каталога приложений не найден: {Path}", path);
+            logger.LogWarning("Client app catalog seed file not found: {Path}", path);
             return;
         }
 
@@ -94,7 +94,7 @@ public sealed class DbInitializer(
         {
             if (!Enum.TryParse<OsPlatform>(entry.OperatingSystem, ignoreCase: true, out var os))
             {
-                logger.LogWarning("Неизвестная ОС '{Os}' в сиде каталога приложений — пропущено", entry.OperatingSystem);
+                logger.LogWarning("Unknown OS '{Os}' in client app catalog seed — skipped", entry.OperatingSystem);
                 continue;
             }
 
@@ -104,7 +104,7 @@ public sealed class DbInitializer(
         }
 
         await dbContext.SaveChangesAsync(cancellationToken);
-        logger.LogInformation("Засеян каталог приложений: {Count} записей", entries.Count);
+        logger.LogInformation("Seeded client app catalog: {Count} entries", entries.Count);
     }
 
     private sealed record ClientAppSeedEntry(