diff --git a/src/core/Deal.Infrastructure/Integrations/Abstractions/IAiClassifierFactory.cs b/src/core/Deal.Infrastructure/Integrations/Abstractions/IAiClassifierFactory.cs
new file mode 100644
index 0000000..d6646b0
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Abstractions/IAiClassifierFactory.cs
@@ -0,0 +1,15 @@
+using Deal.Contracts.Integrations.Abstractions;
+
+namespace Deal.Infrastructure.Integrations.Abstractions;
+
+/// <summary>
+/// Фабрика ИИ-классификатора с бюджетным гейтом
+/// </summary>
+public interface IAiClassifierFactory
+{
+    /// <summary>
+    /// Создаёт ИИ-классификатор
+    /// </summary>
+    /// <returns>Готовый порт классификации.</returns>
+    public IAiClassifier Create();
+}
diff --git a/src/core/Deal.Infrastructure/Integrations/Abstractions/IAiToolsFactory.cs b/src/core/Deal.Infrastructure/Integrations/Abstractions/IAiToolsFactory.cs
new file mode 100644
index 0000000..0952945
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Abstractions/IAiToolsFactory.cs
@@ -0,0 +1,15 @@
+using Deal.Contracts.Integrations.Abstractions;
+
+namespace Deal.Infrastructure.Integrations.Abstractions;
+
+/// <summary>
+/// Фабрика ИИ-инструментов с бюджетным гейтом
+/// </summary>
+public interface IAiToolsFactory
+{
+    /// <summary>
+    /// Создаёт ИИ-инструменты
+    /// </summary>
+    /// <returns>Готовый порт ИИ-инструментов.</returns>
+    public IAiTools Create();
+}
diff --git a/src/core/Deal.Infrastructure/Integrations/Services/AiClassifierFactory.cs b/src/core/Deal.Infrastructure/Integrations/Services/AiClassifierFactory.cs
new file mode 100644
index 0000000..fc0f698
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Services/AiClassifierFactory.cs
@@ -0,0 +1,50 @@
+using Deal.Contracts.Integrations.Abstractions;
+using Deal.Infrastructure.Integrations.Abstractions;
+using Deal.Modules.Tenants.Application.Abstractions;
+using Deal.SharedKernel.Tenants.Abstractions;
+using Microsoft.Extensions.Logging;
+
+namespace Deal.Infrastructure.Integrations.Services;
+
+/// <summary>
+/// Фабрика декоратора бюджетного гейта классификатора
+/// </summary>
+public sealed class AiClassifierFactory : IAiClassifierFactory
+{
+    private readonly GrpcAiClassifier _paidClassifier;
+    private readonly LocalAiClassifier _localClassifier;
+    private readonly ITenantLimitStore _tenantLimits;
+    private readonly ITenantContext _tenantContext;
+    private readonly ILogger<BudgetedAiClassifier> _logger;
+
+    /// <summary>
+    /// Создаёт фабрику классификатора
+    /// </summary>
+    /// <param name="paidClassifier">Платный исполнитель (gRPC-адаптер ai-service).</param>
+    /// <param name="localClassifier">Бесплатный локальный разбор/фильтр (fallback).</param>
+    /// <param name="tenantLimits">Хранилище лимитов бюджета.</param>
+    /// <param name="tenantContext">Контекст текущего тенанта.</param>
+    /// <param name="logger">Логгер переходов на локальный путь.</param>
+    public AiClassifierFactory(
+        GrpcAiClassifier paidClassifier,
+        LocalAiClassifier localClassifier,
+        ITenantLimitStore tenantLimits,
+        ITenantContext tenantContext,
+        ILogger<BudgetedAiClassifier> logger)
+    {
+        ArgumentNullException.ThrowIfNull(paidClassifier);
+        ArgumentNullException.ThrowIfNull(localClassifier);
+        ArgumentNullException.ThrowIfNull(tenantLimits);
+        ArgumentNullException.ThrowIfNull(tenantContext);
+        ArgumentNullException.ThrowIfNull(logger);
+        _paidClassifier = paidClassifier;
+        _localClassifier = localClassifier;
+        _tenantLimits = tenantLimits;
+        _tenantContext = tenantContext;
+        _logger = logger;
+    }
+
+    /// <inheritdoc />
+    public IAiClassifier Create() =>
+        new BudgetedAiClassifier(_paidClassifier, _localClassifier, _tenantLimits, _tenantContext, _logger);
+}
diff --git a/src/core/Deal.Infrastructure/Integrations/Services/AiToolsFactory.cs b/src/core/Deal.Infrastructure/Integrations/Services/AiToolsFactory.cs
new file mode 100644
index 0000000..3815c42
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Services/AiToolsFactory.cs
@@ -0,0 +1,44 @@
+using Deal.Contracts.Integrations.Abstractions;
+using Deal.Infrastructure.Integrations.Abstractions;
+using Deal.Modules.Tenants.Application.Abstractions;
+using Deal.SharedKernel.Tenants.Abstractions;
+using Microsoft.Extensions.Logging;
+
+namespace Deal.Infrastructure.Integrations.Services;
+
+/// <summary>
+/// Фабрика декоратора бюджетного гейта ИИ-инструментов
+/// </summary>
+public sealed class AiToolsFactory : IAiToolsFactory
+{
+    private readonly GrpcAiTools _paidTools;
+    private readonly ITenantLimitStore _tenantLimits;
+    private readonly ITenantContext _tenantContext;
+    private readonly ILogger<BudgetedAiTools> _logger;
+
+    /// <summary>
+    /// Создаёт фабрику ИИ-инструментов
+    /// </summary>
+    /// <param name="paidTools">Платный исполнитель (gRPC-адаптер ai-service).</param>
+    /// <param name="tenantLimits">Хранилище лимитов бюджета.</param>
+    /// <param name="tenantContext">Контекст текущего тенанта.</param>
+    /// <param name="logger">Логгер переходов на локальный путь.</param>
+    public AiToolsFactory(
+        GrpcAiTools paidTools,
+        ITenantLimitStore tenantLimits,
+        ITenantContext tenantContext,
+        ILogger<BudgetedAiTools> logger)
+    {
+        ArgumentNullException.ThrowIfNull(paidTools);
+        ArgumentNullException.ThrowIfNull(tenantLimits);
+        ArgumentNullException.ThrowIfNull(tenantContext);
+        ArgumentNullException.ThrowIfNull(logger);
+        _paidTools = paidTools;
+        _tenantLimits = tenantLimits;
+        _tenantContext = tenantContext;
+        _logger = logger;
+    }
+
+    /// <inheritdoc />
+    public IAiTools Create() => new BudgetedAiTools(_paidTools, _tenantLimits, _tenantContext, _logger);
+}
diff --git a/src/core/Deal.Infrastructure/Integrations/Storage/Abstractions/IFileStorageFactory.cs b/src/core/Deal.Infrastructure/Integrations/Storage/Abstractions/IFileStorageFactory.cs
new file mode 100644
index 0000000..1760129
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Storage/Abstractions/IFileStorageFactory.cs
@@ -0,0 +1,15 @@
+using Deal.Contracts.Integrations.Abstractions;
+
+namespace Deal.Infrastructure.Integrations.Storage.Abstractions;
+
+/// <summary>
+/// Фабрика файлового хранилища вложений (Local или MinIO по конфигурации)
+/// </summary>
+public interface IFileStorageFactory
+{
+    /// <summary>
+    /// Создаёт файловое хранилище
+    /// </summary>
+    /// <returns>Готовый порт файлового хранилища.</returns>
+    public IFileStorage Create();
+}
diff --git a/src/core/Deal.Infrastructure/Integrations/Storage/Options/LocalStorageRoot.cs b/src/core/Deal.Infrastructure/Integrations/Storage/Options/LocalStorageRoot.cs
new file mode 100644
index 0000000..363fc4b
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Storage/Options/LocalStorageRoot.cs
@@ -0,0 +1,7 @@
+namespace Deal.Infrastructure.Integrations.Storage.Options;
+
+/// <summary>
+/// Абсолютный путь корня локального файлового хранилища
+/// </summary>
+/// <param name="Path">Абсолютный путь каталога вложений.</param>
+public sealed record LocalStorageRoot(string Path);
diff --git a/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageFactory.cs b/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageFactory.cs
new file mode 100644
index 0000000..42f73cd
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageFactory.cs
@@ -0,0 +1,42 @@
+using Deal.Contracts.Integrations.Abstractions;
+using Deal.Infrastructure.Integrations.Storage.Abstractions;
+using Deal.Infrastructure.Integrations.Storage.Extensions;
+using Deal.Infrastructure.Integrations.Storage.Options;
+using Microsoft.Extensions.Logging;
+
+namespace Deal.Infrastructure.Integrations.Storage.Services;
+
+/// <summary>
+/// Фабрика файлового хранилища: MinIO при заполненной секции, иначе локальный каталог
+/// </summary>
+public sealed class FileStorageFactory : IFileStorageFactory
+{
+    private readonly StorageOptions _options;
+    private readonly LocalStorageRoot _localRoot;
+    private readonly ILogger<MinioFileStorage> _minioLogger;
+
+    /// <summary>
+    /// Создаёт фабрику файлового хранилища
+    /// </summary>
+    /// <param name="options">Настройки секции Storage.</param>
+    /// <param name="localRoot">Абсолютный путь корня локального режима.</param>
+    /// <param name="minioLogger">Логгер MinIO-адаптера.</param>
+    public FileStorageFactory(
+        StorageOptions options,
+        LocalStorageRoot localRoot,
+        ILogger<MinioFileStorage> minioLogger)
+    {
+        ArgumentNullException.ThrowIfNull(options);
+        ArgumentNullException.ThrowIfNull(localRoot);
+        ArgumentNullException.ThrowIfNull(minioLogger);
+        _options = options;
+        _localRoot = localRoot;
+        _minioLogger = minioLogger;
+    }
+
+    /// <inheritdoc />
+    public IFileStorage Create() =>
+        _options.Minio.IsConfigured()
+            ? new MinioFileStorage(_options.Minio, _minioLogger)
+            : new LocalFileStorage(_localRoot.Path);
+}
diff --git a/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageRegistrar.cs b/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageRegistrar.cs
index 007b84c..b993afb 100644
--- a/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageRegistrar.cs
+++ b/src/core/Deal.Infrastructure/Integrations/Storage/Services/FileStorageRegistrar.cs
@@ -1,4 +1,5 @@
 using Deal.Contracts.Integrations.Abstractions;
+using Deal.Infrastructure.Integrations.Storage.Abstractions;
 using Deal.Infrastructure.Integrations.Storage.Extensions;
 using Deal.Infrastructure.Integrations.Storage.Options;
 using Microsoft.Extensions.Configuration;
@@ -48,16 +49,12 @@ public static class FileStorageRegistrar
         ArgumentNullException.ThrowIfNull(configuration);
 
         StorageOptions options = ReadOptions(configuration);
-
-        if (options.Minio.IsConfigured())
-        {
-            services.AddSingleton<IFileStorage>(serviceProvider =>
-                new MinioFileStorage(options.Minio, serviceProvider.GetRequiredService<ILogger<MinioFileStorage>>()));
-            return services;
-        }
-
         string rootPath = ResolveLocalRoot(options.Local, contentRootPath);
-        services.AddSingleton<IFileStorage>(new LocalFileStorage(rootPath));
+        services.AddSingleton(options);
+        services.AddSingleton(new LocalStorageRoot(rootPath));
+        services.AddSingleton<IFileStorageFactory, FileStorageFactory>();
+        services.AddSingleton<IFileStorage>(serviceProvider =>
+            serviceProvider.GetRequiredService<IFileStorageFactory>().Create());
         return services;
     }
 
diff --git a/src/core/Deal.Infrastructure/Persistence/Abstractions/ITenantLimitStoreFactory.cs b/src/core/Deal.Infrastructure/Persistence/Abstractions/ITenantLimitStoreFactory.cs
new file mode 100644
index 0000000..f8fadbd
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Persistence/Abstractions/ITenantLimitStoreFactory.cs
@@ -0,0 +1,15 @@
+using Deal.Modules.Tenants.Application.Abstractions;
+
+namespace Deal.Infrastructure.Persistence.Abstractions;
+
+/// <summary>
+/// Фабрика хранилища лимитов ИИ-бюджета
+/// </summary>
+public interface ITenantLimitStoreFactory
+{
+    /// <summary>
+    /// Создаёт хранилище лимитов
+    /// </summary>
+    /// <returns>Готовый порт лимитов тенанта.</returns>
+    public ITenantLimitStore Create();
+}
diff --git a/src/core/Deal.Infrastructure/Persistence/Services/TenantLimitStoreFactory.cs b/src/core/Deal.Infrastructure/Persistence/Services/TenantLimitStoreFactory.cs
new file mode 100644
index 0000000..f6a9cd3
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Persistence/Services/TenantLimitStoreFactory.cs
@@ -0,0 +1,31 @@
+using Deal.Infrastructure.Persistence.Abstractions;
+using Deal.Infrastructure.Persistence.Repositories;
+using Deal.Modules.Tenants.Application.Abstractions;
+using Deal.Modules.Tenants.Application.Models;
+
+namespace Deal.Infrastructure.Persistence.Services;
+
+/// <summary>
+/// Фабрика EF-адаптера хранилища лимитов с дефолт-бюджетом из конфигурации
+/// </summary>
+public sealed class TenantLimitStoreFactory : ITenantLimitStoreFactory
+{
+    private readonly DealDbContext _dbContext;
+    private readonly TokenLimitDefaults _defaults;
+
+    /// <summary>
+    /// Создаёт фабрику хранилища лимитов
+    /// </summary>
+    /// <param name="dbContext">Системный контекст (public-схема).</param>
+    /// <param name="defaults">Дефолт-параметры лениво создаваемой строки.</param>
+    public TenantLimitStoreFactory(DealDbContext dbContext, TokenLimitDefaults defaults)
+    {
+        ArgumentNullException.ThrowIfNull(dbContext);
+        ArgumentNullException.ThrowIfNull(defaults);
+        _dbContext = dbContext;
+        _defaults = defaults;
+    }
+
+    /// <inheritdoc />
+    public ITenantLimitStore Create() => new TenantLimitStore(_dbContext, _defaults);
+}
diff --git a/src/core/Deal.Infrastructure/Security/Abstractions/ISecretCipherFactory.cs b/src/core/Deal.Infrastructure/Security/Abstractions/ISecretCipherFactory.cs
new file mode 100644
index 0000000..e79b491
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Security/Abstractions/ISecretCipherFactory.cs
@@ -0,0 +1,15 @@
+using Deal.Modules.Settings.Application.Abstractions;
+
+namespace Deal.Infrastructure.Security.Abstractions;
+
+/// <summary>
+/// Фабрика шифра секретов тенанта
+/// </summary>
+public interface ISecretCipherFactory
+{
+    /// <summary>
+    /// Создаёт шифр секретов
+    /// </summary>
+    /// <returns>Готовый порт симметричного шифрования.</returns>
+    public ISecretCipher Create();
+}
diff --git a/src/core/Deal.Infrastructure/Security/Services/SecretCipherFactory.cs b/src/core/Deal.Infrastructure/Security/Services/SecretCipherFactory.cs
new file mode 100644
index 0000000..b6aeaad
--- /dev/null
+++ b/src/core/Deal.Infrastructure/Security/Services/SecretCipherFactory.cs
@@ -0,0 +1,25 @@
+using Deal.Infrastructure.Security.Abstractions;
+using Deal.Modules.Settings.Application.Abstractions;
+
+namespace Deal.Infrastructure.Security.Services;
+
+/// <summary>
+/// Фабрика AES-256-GCM-шифра по ключу приложения
+/// </summary>
+public sealed class SecretCipherFactory : ISecretCipherFactory
+{
+    private readonly EncryptionKeyProvider _keyProvider;
+
+    /// <summary>
+    /// Создаёт фабрику шифра
+    /// </summary>
+    /// <param name="keyProvider">Источник ключа шифрования приложения.</param>
+    public SecretCipherFactory(EncryptionKeyProvider keyProvider)
+    {
+        ArgumentNullException.ThrowIfNull(keyProvider);
+        _keyProvider = keyProvider;
+    }
+
+    /// <inheritdoc />
+    public ISecretCipher Create() => new AesGcmSecretCipher(_keyProvider.GetKey());
+}
diff --git a/src/core/Deal.Infrastructure/ServiceCollectionExtensions.cs b/src/core/Deal.Infrastructure/ServiceCollectionExtensions.cs
index 84c5734..7d466c2 100644
--- a/src/core/Deal.Infrastructure/ServiceCollectionExtensions.cs
+++ b/src/core/Deal.Infrastructure/ServiceCollectionExtensions.cs
@@ -5,8 +5,12 @@ using Deal.Infrastructure.Integrations.Options;
 using Deal.Infrastructure.Integrations.Services;
 using Deal.Infrastructure.Integrations.Sources;
 using Deal.Infrastructure.Persistence;
+using Deal.Infrastructure.Persistence.Abstractions;
 using Deal.Infrastructure.Persistence.Repositories;
+using Deal.Infrastructure.Persistence.Services;
 using Deal.Infrastructure.Security;
+using Deal.Infrastructure.Security.Abstractions;
+using Deal.Infrastructure.Security.Services;
 using Deal.Infrastructure.Services;
 using Deal.Infrastructure.Tenancy;
 using Deal.Modules.Cards.Application.Abstractions;
@@ -20,7 +24,6 @@ using Deal.Modules.Tenants.Application.Abstractions;
 using Deal.Modules.Tenants.Application.Models;
 using Deal.SharedKernel.Tenants.Abstractions;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
 
 namespace Deal.Infrastructure;
 
@@ -46,9 +49,9 @@ public static class ServiceCollectionExtensions
 
         services.AddScoped<IInviteStore, InviteStore>();
 
-        services.AddScoped<ITenantLimitStore>(provider => new TenantLimitStore(
-            provider.GetRequiredService<DealDbContext>(),
-            tenantLimitDefaults ?? TokenBudgetDefaults.Default));
+        services.AddSingleton(tenantLimitDefaults ?? TokenBudgetDefaults.Default);
+        services.AddScoped<ITenantLimitStoreFactory, TenantLimitStoreFactory>();
+        services.AddScoped<ITenantLimitStore>(provider => provider.GetRequiredService<ITenantLimitStoreFactory>().Create());
 
         services.AddScoped<IRateLimitCounterStore, RateLimitCounterStore>();
 
@@ -117,18 +120,11 @@ public static class ServiceCollectionExtensions
             services.AddScoped<AiProviderConfigBuilder>();
             services.AddScoped<GrpcAiClassifier>();
             services.AddScoped<LocalAiClassifier>();
-            services.AddScoped<IAiClassifier>(provider => new BudgetedAiClassifier(
-                provider.GetRequiredService<GrpcAiClassifier>(),
-                provider.GetRequiredService<LocalAiClassifier>(),
-                provider.GetRequiredService<ITenantLimitStore>(),
-                provider.GetRequiredService<ITenantContext>(),
-                provider.GetRequiredService<ILogger<BudgetedAiClassifier>>()));
+            services.AddScoped<IAiClassifierFactory, AiClassifierFactory>();
+            services.AddScoped<IAiClassifier>(provider => provider.GetRequiredService<IAiClassifierFactory>().Create());
             services.AddScoped<GrpcAiTools>();
-            services.AddScoped<IAiTools>(provider => new BudgetedAiTools(
-                provider.GetRequiredService<GrpcAiTools>(),
-                provider.GetRequiredService<ITenantLimitStore>(),
-                provider.GetRequiredService<ITenantContext>(),
-                provider.GetRequiredService<ILogger<BudgetedAiTools>>()));
+            services.AddScoped<IAiToolsFactory, AiToolsFactory>();
+            services.AddScoped<IAiTools>(provider => provider.GetRequiredService<IAiToolsFactory>().Create());
         }
 
         if (telegramOptions.UseLocal)
@@ -152,8 +148,9 @@ public static class ServiceCollectionExtensions
     public static IServiceCollection AddDealSecurity(this IServiceCollection services, string contentRootPath)
     {
         EncryptionKeyProvider keyProvider = new(contentRootPath);
-        byte[] key = keyProvider.GetKey();
-        services.AddSingleton<ISecretCipher>(new AesGcmSecretCipher(key));
+        services.AddSingleton(keyProvider);
+        services.AddSingleton<ISecretCipherFactory, SecretCipherFactory>();
+        services.AddSingleton<ISecretCipher>(provider => provider.GetRequiredService<ISecretCipherFactory>().Create());
         return services;
     }
 }
diff --git a/src/core/Deal.Modules.Discovery/Application/Registrars/DiscoveryModuleRegistrar.cs b/src/core/Deal.Modules.Discovery/Application/Registrars/DiscoveryModuleRegistrar.cs
index d87810f..848908b 100644
--- a/src/core/Deal.Modules.Discovery/Application/Registrars/DiscoveryModuleRegistrar.cs
+++ b/src/core/Deal.Modules.Discovery/Application/Registrars/DiscoveryModuleRegistrar.cs
@@ -21,8 +21,7 @@ public static class DiscoveryModuleRegistrar
         services.AddScoped<DiscoveryBlacklistService>();
         services.AddScoped<DiscoveryLogService>();
 
-        services.AddSingleton<DiscoverySearchErrorCounter>();
-        services.AddSingleton<IDiscoverySearchErrorCounter>(sp => sp.GetRequiredService<DiscoverySearchErrorCounter>());
+        services.AddSingleton<IDiscoverySearchErrorCounter, DiscoverySearchErrorCounter>();
         services.AddScoped<DiscoveryEvaluator>();
         services.AddScoped<IDiscoveryPacer, DiscoveryPacer>();
         services.AddScoped(sp => new DiscoveryBanGuard(
diff --git a/src/core/Deal.Modules.Discovery/Application/Services/DiscoveryWorkerService.cs b/src/core/Deal.Modules.Discovery/Application/Services/DiscoveryWorkerService.cs
index a5e66ea..13a9291 100644
--- a/src/core/Deal.Modules.Discovery/Application/Services/DiscoveryWorkerService.cs
+++ b/src/core/Deal.Modules.Discovery/Application/Services/DiscoveryWorkerService.cs
@@ -31,7 +31,7 @@ public sealed partial class DiscoveryWorkerService
     /// <param name="banGuard">Квоты дня/flood/стоп-кран (DiscoveryBanGuard).</param>
     /// <param name="pacer">Паузы между авто-вступлениями (интерфейс — фейк в тестах).</param>
     /// <param name="gateway">Гейт telegram-service (Search/Info/ReadForEval/Join/SetMonitor/Backfill).</param>
-    /// <param name="searchErrors">Singleton-счётчик ошибок ключей поиска; null — локальный (на инстанс воркера).</param>
+    /// <param name="searchErrors">Singleton-счётчик ошибок ключей поиска.</param>
     public DiscoveryWorkerService(
         IDiscoveryStore store,
         DiscoveryTasksService tasks,
@@ -41,7 +41,7 @@ public sealed partial class DiscoveryWorkerService
         DiscoveryBanGuard banGuard,
         IDiscoveryPacer pacer,
         ITelegramGateway gateway,
-        IDiscoverySearchErrorCounter? searchErrors = null)
+        IDiscoverySearchErrorCounter searchErrors)
     {
         ArgumentNullException.ThrowIfNull(store);
         ArgumentNullException.ThrowIfNull(tasks);
@@ -51,6 +51,7 @@ public sealed partial class DiscoveryWorkerService
         ArgumentNullException.ThrowIfNull(banGuard);
         ArgumentNullException.ThrowIfNull(pacer);
         ArgumentNullException.ThrowIfNull(gateway);
+        ArgumentNullException.ThrowIfNull(searchErrors);
         _store = store;
         _tasks = tasks;
         _candidates = candidates;
@@ -59,7 +60,7 @@ public sealed partial class DiscoveryWorkerService
         _banGuard = banGuard;
         _pacer = pacer;
         _gateway = gateway;
-        _searchErrors = searchErrors ?? new DiscoverySearchErrorCounter();
+        _searchErrors = searchErrors;
     }
 
     /// <summary>
diff --git a/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs b/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs
index fea2453..ec6eb0a 100644
--- a/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs
+++ b/src/core/tests/Deal.Tests.Unit/Contracts/DiscoveryWorkerServiceTests.cs
@@ -443,7 +443,8 @@ public sealed class DiscoveryWorkerServiceTests
         var pacer = Substitute.For<IDiscoveryPacer>();
         var gateway = new TestDiscoveryGateway();
         var worker = new DiscoveryWorkerService(
-            store.Store, tasks, candidates, log, new DiscoveryEvaluator(settings.Store, ml.Client, ai), banGuard, pacer, gateway.Gateway);
+            store.Store, tasks, candidates, log, new DiscoveryEvaluator(settings.Store, ml.Client, ai), banGuard, pacer, gateway.Gateway,
+            new DiscoverySearchErrorCounter());
         return new Fixture(store, settings, gateway, pacer, worker, tasks);
     }
 
diff --git a/src/core/tests/Deal.Tests.Unit/Support/FileStorageFactoryTests.cs b/src/core/tests/Deal.Tests.Unit/Support/FileStorageFactoryTests.cs
new file mode 100644
index 0000000..094310b
--- /dev/null
+++ b/src/core/tests/Deal.Tests.Unit/Support/FileStorageFactoryTests.cs
@@ -0,0 +1,49 @@
+using Deal.Contracts.Integrations.Abstractions;
+using Deal.Infrastructure.Integrations.Storage.Options;
+using Deal.Infrastructure.Integrations.Storage.Services;
+using Microsoft.Extensions.Logging.Abstractions;
+
+namespace Deal.Tests.Unit.Support;
+
+/// <summary>
+/// Тесты FileStorageFactory — выбор Local/MinIO по заполненности секции Storage:Minio.
+/// </summary>
+public sealed class FileStorageFactoryTests
+{
+    // Локальный режим: относительно пустая секция Minio → LocalFileStorage.
+    [Fact]
+    public void Create_MinioNotConfigured_ReturnsLocalFileStorage()
+    {
+        var factory = new FileStorageFactory(
+            new StorageOptions(),
+            new LocalStorageRoot("/tmp/deal-attachments"),
+            NullLogger<MinioFileStorage>.Instance);
+
+        IFileStorage storage = factory.Create();
+
+        Assert.IsType<LocalFileStorage>(storage);
+    }
+
+    // MinIO-режим: заполнены Endpoint/AccessKey/SecretKey → MinioFileStorage.
+    [Fact]
+    public void Create_MinioConfigured_ReturnsMinioFileStorage()
+    {
+        var options = new StorageOptions
+        {
+            Minio = new MinioStorageOptions
+            {
+                Endpoint = "localhost:9000",
+                AccessKey = "deal",
+                SecretKey = "deal-secret",
+            },
+        };
+        var factory = new FileStorageFactory(
+            options,
+            new LocalStorageRoot("/tmp/deal-attachments"),
+            NullLogger<MinioFileStorage>.Instance);
+
+        IFileStorage storage = factory.Create();
+
+        Assert.IsType<MinioFileStorage>(storage);
+    }
+}